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46-485: The district is made of three primary topographic highs along an approximately 17 mile lineament : Iron Mountain to the southwest, Granite Mountain in the middle, and The Three Peaks in the northwest. Mineralization in this district occurred as rings around the highs as a skarn , a replacement of existing carbonate rock material with high-grade iron ore , mostly in the form of high-grade (>50%Fe in places) magnetite , but also locally hematite . Minor pyrite

92-400: A Digital Land Surface Model in the form of a TIN . The DLSM can then be used to visualize terrain, drape remote sensing images, quantify ecological properties of a surface or extract land surface objects. The contour data or any other sampled elevation datasets are not a DLSM. A DLSM implies that elevation is available continuously at each location in the study area, i.e. that the map represents

138-492: A complete surface. Digital Land Surface Models should not be confused with Digital Surface Models, which can be surfaces of the canopy, buildings and similar objects. For example, in the case of surface models produces using the lidar technology, one can have several surfaces – starting from the top of the canopy to the actual solid earth. The difference between the two surface models can then be used to derive volumetric measures (height of trees etc.). Topographic survey information

184-423: A historic house or other building. Individual historic sites are inherently local, although they may have national or world history importance as well. Many however have little overall historical impact but add depth to the local area. In Australia, local history is focussed on specific cities and suburbs or country towns and regions. In cities, local history might concentrate on a CBD and its bordering suburbs, on

230-558: A leisure activity by both individuals and groups. Most historic counties in England have record societies and archaeological and historical societies which coordinate the work of historians and other researchers concerned with that area. Local history in the UK took a long time to be accepted as an academic discipline. In the 18th and 19th centuries, it was widely regarded as an antiquarian pursuit, suitable for country parsons. The Victoria History of

276-540: A number of countries a broader concept of local lore is known, which is a comprehensive study of everything pertaining to a certain locality: history, ethnography, geography, natural history, etc. Local history tends to be less documented than other types, with fewer books and artifacts than that of a country or continent. Many local histories are recorded as oral tales or stories and so are more vulnerable than more well known issues. Artifacts of local history are often collected in local history museums, which may be housed in

322-405: A part of geovisualization , whether maps or GIS systems. False-color and non-visible spectra imaging can also help determine the lie of the land by delineating vegetation and other land-use information more clearly. Images can be in visible colours and in other spectrum. Photogrammetry is a measurement technique for which the co-ordinates of the points in 3D of an object are determined by

368-570: A place or places, what is now largely called ' local history '. In Britain and in Europe in general, the word topography is still sometimes used in its original sense. Detailed military surveys in Britain (beginning in the late eighteenth century) were called Ordnance Surveys , and this term was used into the 20th century as generic for topographic surveys and maps. The earliest scientific surveys in France were

414-678: A specific suburb or municipality , or on an agglomeration of suburbs and municipalities (because local government boundaries have changed over time). Outside the larger cities, local history often examines regional towns and surrounding areas. Records are typically stored at state libraries, public libraries , historical societies and public record offices. For example, the State Library of Victoria holds extensive local history records for Melbourne and other places in Victoria . Many other Melbourne libraries have local history collections, along with

460-593: A valuable set of information for large-scale analysis. The original American topographic surveys (or the British "Ordnance" surveys) involved not only recording of relief, but identification of landmark features and vegetative land cover. Remote sensing is a general term for geodata collection at a distance from the subject area. Besides their role in photogrammetry, aerial and satellite imagery can be used to identify and delineate terrain features and more general land-cover features. Certainly they have become more and more

506-406: Is superficial human anatomy . In mathematics the concept of topography is used to indicate the patterns or general organization of features on a map or as a term referring to the pattern in which variables (or their values) are distributed in a space. Topographers are experts in topography. They study and describe the surface features of a place or region. Local history Local history

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552-406: Is a related study which may be translated from the local languages as "country lore" or "local lore". In addition to history, it also incorporates other local studies, such as local geography, nature, and ethnography. In Russia local lore is known as krayevedenie ( ru:Краеведение ). It is taught in primary schools. There are also local lore museums known as krayevedcheskie muzei . In modern Russia

598-580: Is also present. Hot fluids are sourced from mid- Tertiary intrusions , which core all three areas. Magnetite and hematite occur as replacements in the Jurassic limestone around three Laramide orogeny , quartz monzonite porphyry , laccolith intrusions . The iron ore was discovered by a Mormon scouting party in 1849, and furnaces were established in Cedar City in 1852, and then Old Irontown in 1868, to produce pig iron . Total production by 1965 from

644-574: Is being used as a non-contentious meeting ground in addressing conflicting traditions by reinforcing shared past rather than adversarial political history. In the United States, local history is usually concentrated on any history of the place and people from a particular village or township . Several villages and townships would comprise one county or county history. Library records are often divided by State, then county, then township/local history. The American Association for State and Local History

690-456: Is concerned with underlying structures and processes to the surface, rather than with identifiable surface features. The digital elevation model (DEM) is a raster -based digital dataset of the topography ( hypsometry and/or bathymetry ) of all or part of the Earth (or a telluric planet ). The pixels of the dataset are each assigned an elevation value, and a header portion of the dataset defines

736-428: Is essential for the planning and construction of any major civil engineering , public works , or reclamation projects. There are a variety of approaches to studying topography. Which method(s) to use depends on the scale and size of the area under study, its accessibility, and the quality of existing surveys. Surveying helps determine accurately the terrestrial or three-dimensional space position of points and

782-438: Is historically based upon the notes of surveyors. They may derive naming and cultural information from other local sources (for example, boundary delineation may be derived from local cadastral mapping). While of historical interest, these field notes inherently include errors and contradictions that later stages in map production resolve. As with field notes, remote sensing data (aerial and satellite photography, for example),

828-543: Is often considered to include the graphic representation of the landform on a map by a variety of cartographic relief depiction techniques, including contour lines , hypsometric tints , and relief shading . The term topography originated in ancient Greece and continued in ancient Rome , as the detailed description of a place. The word comes from the Greek τόπος ( topos , "place") and -γραφία ( -graphia , "writing"). In classical literature this refers to writing about

874-598: Is rarely taught as a separate subject in British schools. In 1908, a Board of Education circular had urged that schools should pay attention "to the history of the town and district" in which they were situated. In 1952, the Ministry of Education suggested schools should use local material to illustrate national themes. Within the current National Curriculum , pupils at level 4 are expected to "show their knowledge and understanding of local, national and international history". The Alan Ball Local History Awards were established in

920-525: Is raw and uninterpreted. It may contain holes (due to cloud cover for example) or inconsistencies (due to the timing of specific image captures). Most modern topographic mapping includes a large component of remotely sensed data in its compilation process. In its contemporary definition, topographic mapping shows relief. In the United States, USGS topographic maps show relief using contour lines . The USGS calls maps based on topographic surveys, but without contours, "planimetric maps." These maps show not only

966-571: Is the movement of " If This House Could Talk " projects in various urban neighborhoods in the United States. These small scale locally generated history events encourage an interest in history and provide for open-ended participation by the general public. However, there is often no vetting or third-party review of the factual evidence that is presented, and therefore such presentations may require oversight by professional third-party history organizations if they are to be transcribed into ongoing collections of local history. In several Slavic countries there

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1012-587: Is the professional association for history professionals, volunteers, museums, historical societies, and other history-related organizations and public history professionals In the United States, 79,000 historic sites are identified as listings on its National Register of Historic Places . State and local municipalities often have additional landmark designations to cover sites of more purely local interest. In addition, many regional and state historical societies maintain regional history and actively seek out missing historical collections. A new form of local history

1058-504: Is the study of history in a geographically local context, often concentrating on a relatively small local community . It incorporates cultural and social aspects of history. Local history is not merely national history writ small but a study of past events in a given geographical area which is based on a wide variety of documentary evidence and placed in a comparative context that is both regional and national. Historic plaques are one form of documentation of significant occurrences in

1104-425: Is the study of the forms and features of land surfaces . The topography of an area may refer to the land forms and features themselves, or a description or depiction in maps. Topography is a field of geoscience and planetary science and is concerned with local detail in general, including not only relief , but also natural , artificial, and cultural features such as roads, land boundaries, and buildings. In

1150-422: Is to something else). Topography has been applied to different science fields. In neuroscience , the neuroimaging discipline uses techniques such as EEG topography for brain mapping . In ophthalmology , corneal topography is used as a technique for mapping the surface curvature of the cornea . In tissue engineering , atomic force microscopy is used to map nanotopography . In human anatomy , topography

1196-618: The Cassini maps after the family who produced them over four generations. The term "topographic surveys" appears to be American in origin. The earliest detailed surveys in the United States were made by the "Topographical Bureau of the Army", formed during the War of 1812 , which became the Corps of Topographical Engineers in 1838. After the work of national mapping was assumed by the U.S. Geological Survey in 1878,

1242-693: The Public Record Office Victoria and the Royal Historical Society of Victoria . In New South Wales , the Royal Australian Historical Society has studied local history as part of its remit since its founding in 1901. It holds local history records along with the State Library of NSW and other state and local libraries and archives. Historians have examined the ways local history has been written in Australia since

1288-439: The 1980s to recognize outstanding contributions in local history publishing in the UK (both in print and in new media ), and to encourage the publishing of such works by public libraries and local authorities . Local history can become a crucial component to policy-making and serve as a marketable resource and this is demonstrated in the case of Northern Ireland . Aside from its contribution to local development, local history

1334-570: The Counties of England project begun in 1899 in honour of Queen Victoria with the aim of creating an encyclopaedic history of each of the historic counties of England . The project is coordinated by the Institute of Historical Research at the University of London . The first academic post related to local history was at Reading University which appointed a research fellow in local history in 1908. There

1380-565: The United States, topography often means specifically relief , even though the USGS topographic maps record not just elevation contours, but also roads, populated places, structures, land boundaries, and so on. Topography in a narrow sense involves the recording of relief or terrain , the three-dimensional quality of the surface, and the identification of specific landforms ; this is also known as geomorphometry . In modern usage, this involves generation of elevation data in digital form ( DEM ). It

1426-669: The area of coverage, the units each pixel covers, and the units of elevation (and the zero-point). DEMs may be derived from existing paper maps and survey data, or they may be generated from new satellite or other remotely sensed radar or sonar data. A geographic information system (GIS) can recognize and analyze the spatial relationships that exist within digitally stored spatial data. These topological relationships allow complex spatial modelling and analysis to be performed. Topological relationships between geometric entities traditionally include adjacency (what adjoins what), containment (what encloses what), and proximity (how close something

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1472-455: The basis for much derived topographic work. Digital Elevation Models, for example, have often been created not from new remote sensing data but from existing paper topographic maps. Many government and private publishers use the artwork (especially the contour lines) from existing topographic map sheets as the basis for their own specialized or updated topographic maps. Topographic mapping should not be confused with geologic mapping . The latter

1518-527: The concept of "regional studies" ( ru:Регионоведение ) is also considered. In Ukraine , the study of local history and regional ethnography is known as krayeznavstvo ( uk:краєзнавство ). The National Union of Local Lore Researchers of Ukraine is a professional society for researchers of ethnology and local studies in Ukraine. It was founded in 1925 and has 3,000 members in 17 chapters. The society has published its journal Краєзнавство since 1927. In Poland ,

1564-454: The contours, but also any significant streams or other bodies of water, forest cover , built-up areas or individual buildings (depending on scale), and other features and points of interest. While not officially "topographic" maps, the national surveys of other nations share many of the same features, and so they are often called "topographic maps." Existing topographic survey maps, because of their comprehensive and encyclopedic coverage, form

1610-509: The direct survey still provides the basic control points and framework for all topographic work, whether manual or GIS -based. In areas where there has been an extensive direct survey and mapping program (most of Europe and the Continental U.S., for example), the compiled data forms the basis of basic digital elevation datasets such as USGS DEM data. This data must often be "cleaned" to eliminate discrepancies between surveys, but it still forms

1656-476: The distances and angles between them using leveling instruments such as theodolites , dumpy levels and clinometers . GPS and other global navigation satellite systems (GNSS) are also used. Work on one of the first topographic maps was begun in France by Giovanni Domenico Cassini , the great Italian astronomer. Even though remote sensing has greatly sped up the process of gathering information, and has allowed greater accuracy control over long distances,

1702-406: The district was 72,136,297 long tons of iron ore. Major areas of iron deposits and their associated mines/pits/ore bodies include: 37°44′59″N 113°14′05″W  /  37.74972°N 113.23472°W  / 37.74972; -113.23472  ( Iron Springs ) This article about mining is a stub . You can help Misplaced Pages by expanding it . Topographic Topography

1748-439: The measurements made in two photographic images (or more) taken starting from different positions, usually from different passes of an aerial photography flight. In this technique, the common points are identified on each image . A line of sight (or ray ) can be built from the camera location to the point on the object. It is the intersection of its rays ( triangulation ) which determines the relative three-dimensional position of

1794-480: The most applications in environmental sciences , land surface is represented and modelled using gridded models. In civil engineering and entertainment businesses, the most representations of land surface employ some variant of TIN models. In geostatistics , land surface is commonly modelled as a combination of the two signals – the smooth (spatially correlated) and the rough (noise) signal. In practice, surveyors first sample heights in an area, then use these to produce

1840-502: The nineteenth century. Early on, the emphasis was on pioneer and settler history. The creative ways that local history contributed to making community has also been argued. Subsequently, local history, urban history , public history and heritage were closely connected in Australia. The British Association for Local History in the United Kingdom encourages and assists in the study of local history as an academic discipline and as

1886-487: The past and oral histories are another. Local history is often documented by local historical societies or groups that form to preserve a local historic building or other historic site. Many works of local history are compiled by amateur historians working independently or archivists employed by various organizations. An important aspect of local history is the publication and cataloguing of documents preserved in local or national records which relate to particular areas. In

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1932-525: The point. Known control points can be used to give these relative positions absolute values. More sophisticated algorithms can exploit other information on the scene known a priori (for example, symmetries in certain cases allowing the rebuilding of three-dimensional co-ordinates starting from one only position of the camera). Satellite RADAR mapping is one of the major techniques of generating Digital Elevation Models (see below). Similar techniques are applied in bathymetric surveys using sonar to determine

1978-475: The position of any feature or more generally any point in terms of both a horizontal coordinate system such as latitude, longitude, and altitude . Identifying (naming) features, and recognizing typical landform patterns are also part of the field. A topographic study may be made for a variety of reasons: military planning and geological exploration have been primary motivators to start survey programs, but detailed information about terrain and surface features

2024-399: The term topographical remained as a general term for detailed surveys and mapping programs, and has been adopted by most other nations as standard. In the 20th century, the term topography started to be used to describe surface description in other fields where mapping in a broader sense is used, particularly in medical fields such as neurology . An objective of topography is to determine

2070-417: The terrain of the ocean floor. In recent years, LIDAR ( LI ght D etection A nd R anging), a remote sensing technique that uses a laser instead of radio waves, has increasingly been employed for complex mapping needs such as charting canopies and monitoring glaciers. Terrain is commonly modelled either using vector ( triangulated irregular network or TIN) or gridded ( raster image ) mathematical models. In

2116-419: Was a department of local history (but without a professor) at Leicester University from 1947. H. P. R. Finberg was the first Professor of English Local History. He was appointed by Leicester in 1964. Local history continues to be neglected as an academic subject within universities. Academic local historians are often found within a more general department of history or in continuing education. Local history

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