91-501: The Rhins (or Rhinns ) of Galloway is a double-headed peninsula in southwestern Scotland. It takes the form of a hammerhead projecting into the Irish Sea , terminating in the north at Corsewall and Milleur Points and in the south at the Mull of Galloway (the southernmost point of Scotland). It is connected to the rest of Wigtownshire by an isthmus, washed on the north by Loch Ryan and on
182-513: A basal Permian unconformity into at least the western part of the Caernarfon Bay Basin. The timing of gas generation presents the greatest exploration risk. Maximum burial of, and primary gas migration from, the source rocks could have terminated as early as the Jurassic , whereas many of the tilted fault blocks were reactivated or created during Paleogene inversion of the basin. However, it
273-600: A continuation into British waters of Ireland's North Celtic Sea Basin, which has two producing gas fields. The basin comprises a south-easterly deepening half-graben near the Welsh coastline, although its internal structure becomes increasingly complex towards the southwest. Permian to Triassic, syn-rift sediments within the basin are less than 3 km (1.9 mi) thick and are overlain by up to 4 km (2.5 mi) of Jurassic strata, and locally also by up to 2 km (1.2 mi) of Paleogene fluvio-deltaic sediments. The basin has
364-454: A corresponding dosage of radioactivity naturally occurring in the seafood consumed by this group of 148 μSv (0.0148 rem) and a total average dosage in Ireland from all sources of 3,620 μSv (0.362 rem). In terms of risk to this group, heavy consumption of seafood generates a 1 in 18 million chance of causing cancer. The general risk of contracting cancer in Ireland is 1 in 522. In
455-517: A diverse range of animals and plants, with the Mull area designated a Site of Special Scientific Interest and also an RSPB nature reserve . Razorbills, guillemots, and puffins are three bird species that nest on the cliffs. The land narrows significantly north of the Mull, south of Rhins, forming an isthmus dividing two bays (the East and West Tarbets). In ancient times boats were brought ashore and moved across
546-454: A large extent on whether the seabed is composed of rock , boulders , gravel , sand , mud or even peat . In the soft sediments seven types of community have been provisionally identified, variously dominated by brittle-stars , sea urchins , worms, mussels , tellins , furrow-shells , and tower-shells. Parts of the bed of the Irish Sea are very rich in wildlife. The seabed southwest of
637-472: A large fort. (f) Crummag Head, a circular stone fort. (g) One between Clanyard and Logan Bay. (h) Dunichinie, large circular fort north of Mull of Logan. (i) Moat Hill at Drummore. (e) Dunman Fort an Early Iron Age Fort on the western shore of the Rhins. The defences along the inner crests of the natural gullies on the north-east and south-east consisted of a wall originally 8'-12' thick. The internal measurement
728-646: A plan to reintroduce grey whales by airlifting 50 of them from the Pacific Ocean to the Irish Sea was claimed to be logically and ethically feasible; it has not been implemented as of 2013. The common or harbour seal and the grey seal are both resident in the Irish Sea. Common seals breed in Strangford Lough, grey seals in southwest Wales and, in small numbers, on the Isle of Man. Grey seals haul out, but do not breed, off Hilbre and Walney islands, Merseyside ,
819-562: A proven petroleum system, with potentially producible gas reserves at the Dragon discovery near the UK/ROI median line, and oil shows in a further three wells. The Cardigan Bay Basin contains multiple reservoir targets, which include the Lower Triassic (Sherwood Sandstone), Middle Jurassic shallow marine sandstones and limestone (Great Oolite ), and Upper Jurassic fluvial sandstone, the reservoir for
910-528: A series of dramatic changes over the last 20,000 years as the last glacial period ended and was replaced by warmer conditions. At the height of the glaciation, the central part of the modern sea was probably a long freshwater lake. As the ice retreated 10,000 years ago, the lake reconnected to the sea. The Irish Sea was formed in the Neogene era. Notable crossings include several invasions from Britain. The Norman invasion of Ireland took place in stages during
1001-621: A year. Holyhead port handles most of the passenger traffic from Dublin and Dún Laoghaire ports, as well as 3.3 million tonnes (3,200,000 long tons; 3,600,000 short tons) of freight. Ports in the Republic handle 3,600,000 travellers crossing the sea each year, amounting to 92% of all Irish Sea travel. Ferry connections from Wales to Ireland across the Irish Sea include Fishguard Harbour and Pembroke to Rosslare , Holyhead to Dún Laoghaire and Holyhead to Dublin. From Scotland , Cairnryan connects with both Belfast and Larne . There
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#17328515236791092-461: Is about 110m north-west by 100m south-east, but no structures were visible in the interior. There are entrances on the north to north-east and south, with a possible third on the north where a natural terrace provides access to the interior immediately beyond the end of the wall. Walling is visible on the north, east and south sides and some on the east, consisting of an inner wall face and heather-covered rubble about 3.0m wide. The wall which follows
1183-460: Is about 24 ft thick at base and 6 ft high externally. Between it and the edge of the glen lies a terrace 20 ft wide near the mound, decreasing to the east where it is 6 ft wide. The bailey lies on the east and measures 28m by 20m within a bank up to 7.2m thick and 2.5m high on the south which enclosed the motte. 5th - 6th century grave covered by a stone slab bearing a badly weathered Latin inscription. The original description of
1274-705: Is also a connection between Liverpool and Belfast via the Isle of Man or direct from Birkenhead . The world's largest car ferry , Ulysses , is operated by Irish Ferries on the Dublin Port–Holyhead route; Stena Line also operates between Britain and Ireland. "Irish Sea" is also the name of one of the BBC 's Shipping Forecast areas defined by the coordinates: Iarnród Éireann , Irish Ferries , Northern Ireland Railways , ScotRail , Stena Line and Transport for Wales Rail promote SailRail with through rail tickets for
1365-494: Is also possible that a secondary gas charge occurred during regional heating associated with intrusion of Paleogene dykes , such as those that crop out nearby on the coastline of north Wales. (Floodpage et al., 1999) have invoked this second phase of Paleogene hydrocarbon generation as an important factor in the charging of the East Irish Sea Basin's oil and gas fields. It is not clear as yet whether aeromagnetic anomalies in
1456-640: Is also the area and name of a community council , which meets generally in Drummore and occasionally in Port Logan . There are two main settlements in Kirkmaiden: Drummore and Port Logan . The small hamlet of Kirkmaiden itself, which contains the present-day church, is about a mile west of Drummore. The parish church was originally some five miles south of Drummore , at a site on the Kirkburn, not far from
1547-405: Is approximately coterminous with the original pre-Reformation parish. The parish takes its name from the clachan or hamlet of Kirkmaiden , itself named after the mediaeval St Medan , whose identity, name, sex and origin are all disputed. The name "Kirkmaiden" itself is thought to be a corruption of a purer Gaelic "Kilmaiden" by either Scandinavians or Angles with a knowledge of Gaelic. It
1638-413: Is blocked with three large boulders. At the south entrance a natural terrace drops obliquely down the scarp into a hollow 2.5m broad with a bank up to 3m thick and 0.6m high on its outer lip. (f) Crammag Head on the western shore of the Rhins was circular dun or broch with outworks about 19.5m in diameter over all, but its wall has been reduced to little more than the basal course of the outer face around
1729-491: Is bounded on its west coast by the North Channel and Loch Ryan and Luce Bay in the east. With around 50 miles (80 km) of coastline running from Stranraer in the north to Torrs Warren in the south, the sea heavily influences the land. The coastal landscape varies: the west coast has steep, rugged cliffs and occasional inlets, but the calmer eastern coast has sandy beaches and a softer landscape. The Rhins are exposed to
1820-686: Is bounded to the north and south by Lower Paleozoic massifs . Only two exploration wells have been drilled so far, and there remain numerous undrilled targets in tilted fault block plays . As in the East Irish Sea Basin, the principal target reservoir is the Lower Triassic, Sherwood Sandstone, top-sealed by younger Triassic mudstones and evaporites. Wells in the Irish Sector to the west have demonstrated that pre-rift, Westphalian coal measures are excellent hydrocarbon source rocks, and are at peak maturity for gas generation (Maddox et al., 1995). Seismic profiles clearly image these strata continuing beneath
1911-513: Is closely associated with sediment activity, with muddy deposits on the seabed acting as sinks, soaking up an estimated 200 kg (440 lb) of plutonium . The highest concentration is found in the eastern Irish Sea in sediment banks lying parallel to the Cumbrian coast. This area acts as a significant source of wider contamination as radionuclides are dissolved once again. Studies have revealed that 80% of current seawater contamination by caesium
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#17328515236792002-624: Is linked to the Celtic Sea in the south by St George's Channel and to the Inner Seas off the West Coast of Scotland in the north by the North Channel . Anglesey , North Wales , is the largest island in the Irish Sea, followed by the Isle of Man . The term Manx Sea may occasionally be encountered ( Welsh : Môr Manaw , Irish : Muir Meann Manx : Mooir Vannin , Scottish Gaelic : Muir Mhanainn ). On its shoreline are Scotland to
2093-510: Is no top-seal for reservoirs sub cropping the regional base Permian unconformity in the east of the basin, and Carboniferous strata crop out at the sea bed in the west. Previous exploration drilling in the Kish Bank Basin has confirmed the potential for petroleum generation with oil shows seen in a number of wells together with natural hydrocarbon seeps recorded from airborne surveys. New analysis of vintage 2-D seismic data has revealed
2184-507: Is on YouTube. Killumpha Tower is another tower house in the parish. The population of the parish was 1,051 in 1755, 1,380 in the 1790s and 1,613 in 1801. In 1790 the Statistical Account reported abundance of fish including oysters and lobsters, corn and cattle; plentiful potatoes and other vegetables; quantities of thriving barley and oats; and flax. Trees, however, did not thrive. The farmers improved their land with lime, which
2275-399: Is situated on the summit of Core Hill, immediately south of Kirkmaiden churchyard. It measures 28.3m by 21m within the inner rampart, which varies from a low bank 3.4m thick and 0.5m high, to a scarp up to 2.3m high externally. A stone axe was found in the interior. High Drummore Motte and Bailey in the mid-eastern side of the Rhins. The mound is 10 ft high, but is 23 ft high to
2366-461: Is sourced from sediment banks, whilst plutonium levels in the western sediment banks between the Isle of Man and the Irish coast are being maintained by contamination redistributed from the eastern sediment banks. The consumption of seafood harvested from the Irish Sea is the main pathway for exposure of humans to radioactivity. The environmental monitoring report for the period 2003 to 2005 published by
2457-532: The Bahama and King William Banks to the east and north of the Isle of Man and the Kish Bank , Codling Bank, Arklow Bank and Blackwater Bank near the coast of Ireland. The Irish Sea, at its greatest width, is 200 km (120 mi) and narrows to 75 km (47 mi). The International Hydrographic Organization defines the limits of the Irish Sea (with St George's Channel) as follows, The Irish Sea has undergone
2548-855: The Douglas Complex the gas is piped by subsea pipeline to the Point of Ayr gas terminal for further processing. The gas is then sent by onshore pipeline to PowerGen 's combined cycle gas turbine power station at Connah's Quay . PowerGen is the sole purchaser of gas from the Liverpool Bay development. The Liverpool Bay development comprises four offshore platforms. Offshore storage and loading facilities. The onshore gas processing terminal at Point of Ayr. Production first started at each field as follows: Hamilton North in 1995, Hamilton in 1996, Douglas in 1996, Lennox (oil only) in 1996 and Hamilton East 2001. The first contract gas sales were in 1996. The quality of
2639-458: The Mull of Galloway ; the name of the nearest cove, Portankill, suggests that originally many worshippers attended Mass by boat. The church was dedicated to the Virgin Mary; and in a cave on the eastern shore of the parish at some time a hermit lived. On 15 July 1393 Pope Clement VII authorised Finlay, Abbot of Soulseat , to annex Kirkmaiden parish church in ‘le Rynnis’ to augment the income of
2730-683: The North Atlantic at both its northern and southern ends. To the north, the connection is through the North Channel between Scotland and Northern Ireland and the Malin Sea . The southern end is linked to the Atlantic through the St George's Channel between Ireland and Pembrokeshire , and the Celtic Sea . It is composed of a deeper channel about 300 km (190 mi) long and 30–50 km (20–30 mi) wide on its western side and shallower bays to
2821-533: The North Channel to see if a tunnel between Ireland and Scotland was viable. Sixty years later, Harford Montgomery Hyde , Unionist MP for North Belfast, called for the building of such a tunnel. A tunnel project has been discussed several times in the Irish parliament . The idea for a 34-kilometre (21 mi) long rail bridge or tunnel continues to be mooted. Several potential projects have been proposed, including one between Dublin and Holyhead put forward in 1997 by
Rhins of Galloway - Misplaced Pages Continue
2912-491: The Radiological Protection Institute of Ireland (RPII) reported that in 2005 average quantities of radioactive contamination found in seafood ranged from less than 1 Bq/kg (12 pCi/lb) for fish to under 44 Bq/kg (540 pCi/lb) for mussels. Doses of man-made radioactivity received by the heaviest consumers of seafood in Ireland in 2005 was 1.10 μSv (0.000110 rem). This compares with
3003-449: The Wirral , St Annes, Barrow-in-Furness Borough, and Cumbria. The Irish Sea has been described by Greenpeace as the most radioactively contaminated sea in the world with some "eight million litres of nuclear waste " discharged into it each day from Sellafield reprocessing plants, contaminating seawater, sediments and marine life. Low-level radioactive waste has been discharged into
3094-783: The sea duck , common scoter , spend winters feeding in shallow waters off eastern Ireland, Lancashire and North Wales . Whales, dolphins and porpoises all frequent the Irish Sea, but knowledge of how many there may be and where they go is somewhat sketchy. About a dozen species have been recorded since 1980, but only three are seen fairly often. These are the harbour porpoise , bottlenose dolphin and common dolphin . The more rarely seen species are minke whale , fin whale , sei whale , humpback whale , North Atlantic right whales which are now considered to be almost extinct in eastern North Atlantic, sperm whale , northern bottlenose whale , long-finned pilot whale , orca , white-beaked dolphin , striped dolphin and Risso's dolphin . In 2005,
3185-529: The westerlies from the Atlantic and thus receive a lot of rainfall (around 1,000 millimetres or 40 inches per year); this has led to the peninsula being principally used for farming , with the relatively flat land offering good dairy and beef production. As the land is almost surrounded by sea, its temperature is significantly stabilised by the North Atlantic drift , which cools the land in summer and warms it in winter. Thus there are few severe frosts. This allows
3276-454: The 20th century the two congregations were reunited. Now worship is habitually at the church within Drummore, with one service each month in the summer being held at Kirk Covenant. A substantial earthwork, measuring 400 m long, cuts off an area of about 57 ha at the eastern end of the Mull of Galloway . In most places it comprises three ditches with medial banks, the inner bank being
3367-562: The British engineering firm Symonds. At 80 km (50 mi), it would have been by far the longest rail tunnel on earth with an estimated cost approaching £20 billion. An offshore wind farm was developed on the Arklow Bank, Arklow Bank Wind Park , about 10 km (6.2 mi) off the coast of County Wicklow in the south Irish Sea. The site currently has seven GE 3.6 MW turbines , each with 104-metre (341 ft) diameter rotors ,
3458-563: The Dee Estuary and the estuaries are also important as nurseries for flatfish , herring and sea bass . Muddy seabeds in deeper waters are home to populations of the Dublin Bay prawn , also known as "scampi". The open sea is a complex habitat in its own right. It exists in three spatial dimensions and also varies over time and tide. For example, where freshwater flows into the Irish Sea in river estuaries its influence can extend far offshore as
3549-478: The Dragon discovery. The most likely hydrocarbon source rocks are Early Jurassic marine mudstones. These are fully mature for oil generation in the west of the British sector and are mature for gas generation nearby in the Irish sector. Gas-prone, Westphalian pre-rift coal measures may also be present at depth locally. The Cardigan Bay Basin was subjected to two Tertiary phases of compressive uplift, whereas maximum burial that terminated primary hydrocarbon generation
3640-708: The East Irish Sea Basin is at a mature exploration phase. Early Namurian basinal mudstones are the source rocks for these hydrocarbons. Production from all fields is from fault-bounded traps of the Lower Triassic formation, principally the aeolian Sherwood Sandstone reservoir, top-sealed by younger Triassic continental mudstones and evaporites . Future mineral exploration will initially concentrate on extending this play , but there remains largely untested potential also for gas and oil within widespread Carboniferous fluvial sandstone reservoirs. This play requires intraformational mudstone seal units to be present, as there
3731-756: The Irish Sea and its surrounding coastline, ranging from flower-like fan-worms to predatory swimming crabs to large chameleon -like cuttlefish . Some of the most significant for other wildlife are the reef-building species like the inshore horse mussel of Strangford Lough, the inter-tidal honeycomb worm of Morecambe Bay, Cumbria and Lancashire , and the sub-tidal honeycomb worm of the Wicklow Reef . These build up large structures over many years and, in turn, provide surfaces, nooks and crannies where other marine animals and plants may become established and live out some or all of their lives. There are quite regular records of live and stranded leatherback turtles in and around
Rhins of Galloway - Misplaced Pages Continue
3822-449: The Irish Sea are of international importance for birds. They are vital feeding grounds on migration flyways for shorebirds travelling between the Arctic and Africa. Others depend on the milder climate as a refuge when continental Europe is in the grip of winter. Twenty-one species of seabird are reported as regularly nesting on beaches or cliffs around the Irish Sea. Huge populations of
3913-408: The Irish Sea as part of operations at Sellafield since 1952. The rate of discharge began to accelerate in the mid- to late 1960s, reaching a peak in the 1970s and generally declining significantly since then. As an example of this profile, discharges of plutonium (specifically Pu ) peaked in 1973 at 2,755 terabecquerels (74,500 Ci) falling to 8.1 TBq (220 Ci) by 2004. Improvements in
4004-466: The Irish Sea. This species travels north to the waters off the British Isles every year following the swarms of jellyfish that form its prey. Loggerhead turtle, ridley sea turtle and green turtle are found very occasionally in the Irish Sea but are generally unwell or dead when discovered. They have strayed or been swept out of their natural range further south into colder waters. The estuaries of
4095-470: The Isle of Man is particularly noted for its rarities and diversity, as are the horse mussel beds of Strangford Lough. Scallops and queen scallops are found in more gravelly areas. In the estuaries, where the bed is more sandy or muddy, the number of species is smaller but the size of their populations is larger. Brown shrimp , cockles and edible mussels support local fisheries in Morecambe Bay and
4186-499: The Loch side of the peninsula at RAF Station Wig Bay, as well as RAF Station Stranraer. RAF Corsewall operated north of Kirkcolm and was mainly used as a training school for flying boats. The bombing range in Luce Bay was used extensively throughout the second world war, with facilities based at West Freugh and Drummore In modern times the peninsula consists of a patchwork of farms running
4277-756: The Middle Jurassic section. The Liverpool Bay Development was BHP 's largest operated asset. It comprises the integrated development of five offshore oil and gas fields in the Irish Sea: Oil is produced from the Lennox and Douglas fields. It is then treated at the Douglas Complex and piped 17 km (11 mi) to an oil storage barge ready for export by tankers. Gas is produced from the Hamilton, Hamilton North and Hamilton East reservoirs. After initial processing at
4368-467: The North Channel of around six months with peak concentrations off the northeast Irish coast occurring 18–24 months after peak discharge. Less soluble elements such as plutonium are subject to much slower redistribution. Whilst concentrations have declined in line with the reduction in discharges they are markedly higher in the eastern Irish Sea compared to the western areas. The dispersal of these elements
4459-529: The UK, the heaviest seafood consumers in Cumbria received a radioactive dosage attributable to Sellafield discharges of 220 μSv (0.022 rem) in 2005. This compares to average annual dose of naturally sourced radiation received in the UK of 2,230 μSv (0.223 rem). Discussions of linking Britain to Ireland began in 1895, with an application for £15,000 towards the cost of carrying out borings and soundings in
4550-587: The abbey. In 1638 the parishioners, citing the inconvenience of the journey to church, secured the building of a new church known as Kirk Covenant on Core Hill, about a mile west of Drummore. The patron was the Earl of Stair. Following the Disruption of 1843 , a new church was again built, for worshippers in the Free Church of Scotland , and this time in the village itself, in the street now known as Stair Street. Early in
4641-400: The adjoining shores , the seabed and the open sea itself. The information on the invertebrates of the seabed of the Irish Sea is rather patchy because it is difficult to survey such a large area, where underwater visibility is often poor and information often depends upon looking at material brought up from the seabed in mechanical grabs. However, the groupings of animals present depend to
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#17328515236794732-716: The area has a long history, forming part of the western kingdoms that collectively ruled most of western Scotland, parts of Ireland and the Isle of Man. The Novantae Celtic tribe was based in the Rhins area, which the Romans called Novantarum Peninsula . When Agricola was in Britain in 81 AD, a road was built from Dalswinton west to the Rhins, terminating at Stranraer on the southwestern tip of Loch Ryan, leading some to argue that if Agricola did attack Ireland , he would have done so from this location. Subsistence, Crofting , lifestyles are likely to have been dominant throughout much of
4823-426: The area saw the BBC deciding to film the drama Two Thousand Acres of Sky in the village of Port Logan . Sites of interest in and around the Rhins include: 54°51′36″N 5°02′56″W / 54.86°N 5.049°W / 54.86; -5.049 Irish Sea The Irish Sea is a 46,007 km (17,763 sq mi) body of water that separates the islands of Ireland and Great Britain . It
4914-406: The area were traditionally used locally and increasingly exported. Salt Pans on the western coast of the peninsula were used for centuries as a local source of salt. Kelp harvesting became increasingly popular, both for local uses and also exported for use in chemical production. Sands, silts and gravels, common to all glaciated alluvial areas were frequently quarried. As communications improved
5005-428: The crest of a scarp over 7m high around the north, east and south sides of the summit. The wall peters out on the north and south to south-west, and there are no visible defences on the west where the ground falls away steeply to the sea 150m below. There are four approaches to the fort, but only one, in the north-east is faced as an entrance. A shallow hollow descends the scarp at the north to north-east entrance, which
5096-400: The east and protected on the west by a rampart and ditch. The top is about 40 ft in diameter, and has a hollow about 18 ft across and 3 to 4 ft deep, with an entrance from the east. A rampart goes down the slope towards the east with an interspace of 60 ft. On the south there was an entrance about 8 ft wide at the base of the mound and on the south of the base the rampart
5187-426: The east. The depth of the western channel ranges from 80 m (260 ft) to 275 m (900 ft). Cardigan Bay in the south, and the waters to the east of the Isle of Man , are less than 50 m (160 ft) deep. With a total water volume of 2,430 km (580 cu mi) and a surface area of 47,000 km (18,000 sq mi), 80% is to the west of the Isle of Man. The largest sandbanks are
5278-447: The edge of the promontory respectively. About 20m east of the ditch there is an outer rampart with external ditch. At its north end the rampart has been reduced to little more than a scatter of stones but towards the south it is up to 4.4m thick and 0.5m high. "Vitrified" stone was recovered from the outer rampart. It had an entrance passage on the east where the wall was at least 4.5m to 6m thick. Core Hill Fort Iron-Dark age Fort
5369-483: The ferries that sail to Belfast and Larne , which were originally based at Portpatrick. As the ships became larger, they required larger protective harbours, and the exposed Portpatrick was no longer suitable, so they moved to the shelter of Loch Ryan from where they still sail today. The southernmost point of the Rhins is also the southernmost point in Scotland, the Mull of Galloway. Here the land and rocky cliffs support
5460-408: The freshwater is lighter and "floats" on top of the much larger body of salt water until wind and temperature changes mix it in. Similarly, warmer water is less dense and seawater warmed in the inter-tidal zone may "float" on the colder offshore water. The amount of light penetrating the seawater also varies with depth and turbidity. This leads to differing populations of plankton in different parts of
5551-404: The full length of the land. Increasingly the area is diversifying into tourism as small scale farming becomes less economically viable. The natural environment of the area, with its long rugged coastline and numerous small bays attracts some tourism. The relatively sparse population is also a key asset, in a time when many tourist locations are suffering over-popularity. The natural environment of
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#17328515236795642-720: The greatest wildlife resource of the Irish Sea lies in its estuaries : particularly the Dee Estuary , the Mersey Estuary , the Ribble Estuary , Morecambe Bay , the Solway Firth , the Firth of Clyde , Belfast Lough , Strangford Lough , Carlingford Lough , Dundalk Bay , Dublin Bay and Wexford Harbour . However, a lot of wildlife also depends on the cliffs, salt marshes and sand dunes of
5733-516: The isthmus [ citation needed ] by human resources, with the aid of log rollers and lubrication—all this effort aimed to avoid navigating around the Mull with its dangerous currents. The Southern Upland Way begins in the Rhins at Portpatrick and winds its way through the area on its long journey east across Scotland to its finish at Cockburnspath . In the South Rhins the Britons were commemorated by
5824-479: The larger, measuring between 3.1 m and 4 m in thickness with an external height of up to 2.2 m. It is believed the ramparts make this the largest Iron Age stronghold in Britain. It is situated 330 m south-southeast of the earthwork at the Tarbet. About 330 m north-northwest of the above earthwork, and situated at the narrow isthmus between the bays of East and West Tarbet, an earthwork cuts across
5915-633: The late 12th century from Porthclais near St. Davids , Wales , in Hulks , Snekkars , Keels and Cogs to Wexford Harbour , Leinster . The Tudors crossed the Irish Sea to invade in 1529 in caravels and carracks . In 1690 the English fleet set sail for the Williamite War in Ireland from Hoylake , Wirral , the departure becoming permanently known as King's Gap as a result. Because Ireland has neither tunnel nor bridge to connect it with Great Britain ,
6006-495: The name of a farm, Drumbreddan, "the ridge of the Britons". Their chieftains lived in hill-forts, like that of Dunman, "fort of gables", Kirkmaiden , 400 feet (120 metres) above sea level; some in drystone brochs, like Doon Castle at Ardwell Point. They built substantial fortifications, like the one between East and West Tarbet, which defends the Mull of Galloway against marauders from the north. Having been settled from ancient times,
6097-540: The neck of the Mull of Galloway south of the enclosed fields of the Mull farm. The bank is 2.3 m wide and 0.5 m high with possible facing stones exposed. The Gordons of Clanyard Castle were powerful men in the area, and their daughters married into Kirkmaiden families. Alexander Gordon of Castle Clanyard received a bell cast in AD1534 for Kirkmaiden Church. A very interesting Castle Clanyard Reconstruction in Sketchup
6188-418: The north of the causeway the ditch measures 9m in breadth and varies from 1.3m in depth externally to 2m internally, but to the south it is only 6.5m in breadth and 1.1m in depth. The ditch is only visible at the southern end of the rampart and measures up to 5.5m in breadth by 0.3m in depth. The entrance through the outer defence was probably at its southern end where the rampart and ditch stop 3m and 5m short of
6279-555: The north, England to the east, Wales to the southeast, Northern Ireland and the Republic of Ireland to the west. The Irish Sea is of significant economic importance to regional trade, shipping and transport, as well as fishing and power generation in the form of wind power and nuclear power plants . Annual traffic between Great Britain and Ireland is over 12 million passengers and 17 million tonnes (17,000,000 long tons; 19,000,000 short tons) of traded goods. The Irish Sea joins
6370-447: The partners are currently advancing a focused work programme in order to better understand and hopefully mitigate these risks. However, given its location in shallow water and close proximity to shore, the prospect is of great interest as exploration drilling, together with any future development costs, are likely to be low. Below is a list of cities and towns around the Irish Sea coasts in order of size: The most accessible and possibly
6461-482: The peninsula's history. Farming would have been practised to satisfy the needs of the tenants and, later on, the estates. Fishing would have generally been practised on a local scale for local consumption rather than export. Due to the very sparse populations that lived in the area it was not until the Industrial Revolution that changes from a basic subsistence crofting lifestyle would be noted. Resources in
6552-640: The presence of a large undrilled structural closure at Lower Triassic level situated about 10 kilometres (6 mi) offshore Dublin. This feature, known as the Dalkey Island exploration prospect, may be prospective for oil, as there are prolific oil productive Lower Triassic reservoirs nearby in the eastern Irish Sea offshore Liverpool. Whilst the Dalkey Island exploration prospect could contain about 870 million barrels (140,000,000 m ) of oil in place, this undrilled prospect still has significant risk and
6643-596: The railway network, which was laid to Portpatrick to ensure a fast passage for the mail boat to Donaghadee . As the ships which served the North Channel route increased in size it became more difficult for Portpatrick to offer a safe harbour, with the shipping routes eventually moving in 1849 to the calmer waters of Stranraer Harbour in Loch Ryan. During the Second World War the area became an important station for anti- U-boat activities, with flying boats operating from
6734-401: The sea and varying communities of animals that feed on these populations. However, increasing seasonal storminess leads to greater mixing of water and tends to break down these divisions, which are more apparent when the weather is calm for long periods. Plankton includes bacteria, plants ( phytoplankton ) and animals ( zooplankton ) that drift in the sea. Most are microscopic, but some, such as
6825-529: The south by Luce Bay . From end to end, the peninsula measures 28 miles (45 kilometres). It takes its name from the Gaelic word rinn , meaning "point". The principal settlements are Stranraer at the head of Loch Ryan and the small tourist village of Portpatrick on the west coast. Other villages are dotted up and down the peninsula, including Kirkcolm , Leswalt , Lochans , and, in the South Rhins, Stoneykirk , Sandhead , Ardwell , and Drummore . The peninsula
6916-455: The southeast of Caernarfon Bay are imaging a continuation of the dyke swarm into this area too, or whether they are instead associated with deeply buried Permian syn-rift volcanics . Alternatively, the fault block traps could have been recharged by exsolution of methane from formation brines as a direct result of the Tertiary uplift (cf. Doré and Jensen, 1996). The Cardigan Bay Basin forms
7007-405: The stone (which is now lost) records that the name Ventidius was legible together with another, which translated as "sub-deacon". It is thought that this could be the 5th stone from Kirkmadrine. The grave being of a much later date. A standing stone is situated 460m NNW of Low Curghie. Cairngaan , on the southern tip of the Rhins, possibly Bronze-Age. A ruined church south of Port William in
7098-565: The survival of numerous tropical palms and flora which otherwise could not exist this far north. Examples of these tropical plants can be seen at the Logan Botanic Garden . The natural geography of the Rhins has led directly to the use of the area for development: the entire peninsula acts as a huge breakwater against the currents of the North Channel and, to a lesser extent, the Atlantic. This creates relatively calm and safe navigable waters in Loch Ryan and Luce Bay. They are notably used by
7189-858: The train and the ferry. The British ship LCT 326 sank in the Irish sea and was discovered in March 2020. In September 2021, the British Navy ship HMS Mercury was discovered; it sank in 1940. The British ship SS Mesaba was sunk by the Imperial German Navy U-118 in 1918 and discovered in 2022. This ship is well known for sailing near the Titanic and for attempting to warn the Titanic about dangerous icebergs. The Caernarfon Bay basin contains up to 7 cubic kilometres (1.7 cu mi) of Permian and Triassic syn-rift sediments in an asymmetrical graben that
7280-469: The treatment of waste in 1985 and 1994 resulted in further reductions in radioactive waste discharge although the subsequent processing of a backlog resulted in increased discharges of certain types of radioactive waste. Discharges of technetium in particular rose from 6.1 TBq (160 Ci) in 1993 to a peak of 192 TBq (5,200 Ci) in 1995 before dropping back to 14 TBq (380 Ci) in 2004. In total 22 petabecquerels (590 kCi) of Pu
7371-460: The various species of jellyfish and sea gooseberry , can be much bigger. Diatoms and dinoflagellates dominate the phytoplankton. Although they are microscopic plants, diatoms have hard shells and dinoflagellates have little tails that propel them through the water. Phytoplankton populations in the Irish Sea have a spring "bloom" every April and May, when the seawater is generally at its greenest. Crustaceans , especially copepods , dominate
7462-587: The vast majority of heavy goods trade is done by sea. Northern Ireland ports handle 10 million tonnes (9,800,000 long tons; 11,000,000 short tons) of goods trade with the rest of the United Kingdom annually; the ports in the Republic of Ireland handle 7.6 million tonnes (7,500,000 long tons; 8,400,000 short tons), representing 50% and 40% respectively of total trade by weight. The Port of Liverpool handles 32 million tonnes (31,000,000 long tons; 35,000,000 short tons) of cargo and 734,000 passengers
7553-515: The water in Liverpool Bay was historically contaminated by dumping of sewage sludge at sea but this practice became illegal in December 1988 and no further sludge was deposited after that date. With 210 billion cubic metres (7.5 trillion cubic feet) of natural gas and 176 million barrels (28,000,000 m ) of petroleum estimated by the field operators as initially recoverable hydrocarbon reserves from eight producing fields (DTI, 2001),
7644-399: The wealth of the area improved, with the sea links to Ireland , Glasgow & Liverpool both allowing the export of local farming produce (thus encouraging farming for production rather than subsistence) and also import of materials and goods not common to the area. The importance of the area's proximity to Ireland led to significant infrastructure being developed, most notably the link to
7735-450: The west. The granite facing-stones measure up to 1m in length by 0.65m in breadth and 0.65m in height, and a maximum of three courses is visible on the north-west. The interior on the west, which is now occupied by Crammag Head Light, has been raised up to 1.8m above the outer face with material from a ditch immediately east of the dun. The ditch is broken by a causeway 2.5m wide which is faced with granite boulders along its south-side. To
7826-513: The world's first commercial application of offshore wind turbines over three megawatts in size. The operating company, Airtricity , has indefinite plans for nearly 100 further turbines on the site. Further wind turbine sites include: Kirkmaiden Kirkmaiden is a parish in the Rhins of Galloway , the most southerly in Scotland ; the present Church of Scotland parish has the same name as and
7917-465: The zooplankton. However, many animals of the seabed, the open sea and the seashore spend their juvenile stages as part of the zooplankton. The whole plankton "soup" is vitally important, directly or indirectly, as a food source for most species in the Irish Sea, even the largest. The enormous basking shark , for example, lives entirely on plankton and the leatherback turtle 's main food is jellyfish. A colossal diversity of invertebrate species live in
8008-561: Was brought from Whitehaven or Ireland. At that time a number of endowments for the poor of the parish are mentioned, including £100 from Andrew McMurray a merchant in London, £100 from Andrew McDowal (Lord Bankton, one of the judges of the Court of Session: the McDowal family were lairds of Logan ), and £400 from William Adair of Flixton, all three of whom had been born in the parish. The nearest market
8099-510: Was discharged over the period 1952 to 1998. Current rates of discharge for many radionuclides are at least 100 times lower than they were in the 1970s. Analysis of the distribution of radioactive contamination after discharge reveals that mean sea currents result in much of the more soluble elements such as caesium being flushed out of the Irish Sea through the North Channel about a year after discharge. Measurements of technetium concentrations post-1994 has produced estimated transit times to
8190-485: Was in Stranraer, and there were three schools and three licensed ale-houses. See Archaeological and Historical Collections relating to Ayrshire and Galloway. vol. V. pp. 62–63 by Rev. George Wilson wherein he describes forts : (a) 2 across the narrow isthmus from east to west Tarbert. (b) One north-west of West Tarbert, not on O.S. map. (c) Dunora or Dunorrich. (d) Three forts with only traces of ditch. (e) Dunman,
8281-576: Was probably around the end of the Cretaceous , or earlier if Cretaceous strata, now missing, were never deposited in the basin. Despite the Tertiary structuration, the Dragon discovery has proved that potentially commercial volumes of hydrocarbons were retained at least locally in Cardigan Bay. In addition to undrilled structural traps, the basin contains the untested potential for stratigraphic entrapment of hydrocarbons near synsedimentary faults, especially in
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