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15-673: In Quay County, New Mexico , where the unit was first described, it consists of poorly cemented brown sandstone and gray shale and is 50–60 feet (15–18 m) thick. It overlies the Mesa Rica Formation and underlies the Graneros Shale , and is assigned to the Purgatoire Group . Further north, in the valley of the Dry Cimarron , the formation consists of medium gray shale and is 10–20 meters (33–66 ft) thick. The formation

30-434: A female householder with no husband present, 38.6% were non-families, and 34.2% of all households were made up of individuals. The average household size was 2.21 and the average family size was 2.79. The median age was 45.6 years. The median income for a household in the county was $ 28,773 and the median income for a family was $ 41,766. Males had a median income of $ 29,769 versus $ 32,462 for females. The per capita income for

45-545: A given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such as the American Community Survey . This allows the calculation of per capita income for both the country as a whole and specific regions or demographic groups. However, comparing per capita income across different countries is often difficult, since methodologies, definitions and data quality can vary greatly. Since

60-470: Is the Texas state line, approximately 103.04 degrees west longitude. According to the U.S. Census Bureau , the county has a total area of 2,882 square miles (7,460 km ), of which 2,874 square miles (7,440 km ) is land and 7.2 square miles (19 km ) (0.3%) is water. As of the 2000 census , there were 10,155 people, 4,201 households, and 2,844 families living in the county. The population density

75-447: The 1990s, the OECD has conducted regular surveys among its 38 member countries using a standardized methodology and set of questions. Per capita income is often used to measure a sector's average income and compare the wealth of different populations. Per capita income is also often used to measure a country's standard of living . When used to compare income levels of different countries, it

90-470: The Pajarito Formation and underlying Mesa Rica Formation at the spillway of Clayton Lake State Park in 1982. The Clayton Lake trackways are unusual in showing trail dragging traces. The trackways here are accessible by a trail with interpretive signage but are rapidly eroding in the lake spillway. Most of the tracks have been identified as Caririchnium leonardii . The formation was first named as

105-632: The Pajarito shale member of the Purgatoire Formation by Drobovolny et al. in 1947. They designated neither a type location nor an origin for the name, though it was originally mapped in Quay County, New Mexico. It was raised to formation rank by Griggs and Read in 1959, who also abandoned the use of the Purgatoire Formation in northeastern New Mexico. Kues and Lucas identified the formation in

120-429: The age of 18 living with them, 52.10% were married couples living together, 12.00% had a female householder with no husband present, and 32.30% were non-families. 28.90% of all households were made up of individuals, and 13.80% had someone living alone who was 65 years of age or older. The average household size was 2.37 and the average family size was 2.90. In the county, the population was spread out, with 25.00% under

135-468: The age of 18, 6.70% from 18 to 24, 23.30% from 25 to 44, 26.00% from 45 to 64, and 19.00% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 94.00 males. For every 100 females age 18 and over, there were 91.50 males. The median income for a household in the county was $ 24,894, and the median income for a family was $ 30,362. Males had a median income of $ 24,801 versus $ 17,500 for females. The per capita income for

150-507: The county was $ 14,938. About 15.70% of families and 20.90% of the population were below the poverty line , including 25.50% of those under age 18 and 15.80% of those age 65 or over. As of the 2010 census , there were 9,041 people, 4,072 households, and 2,502 families living in the county. The population density was 3.1 inhabitants per square mile (1.2/km ). There were 5,569 housing units at an average density of 1.9 units per square mile (0.73 units/km ). The racial makeup of

165-436: The county was $ 18,234. About 13.3% of families and 21.1% of the population were below the poverty line , including 30.7% of those under age 18 and 17.3% of those age 65 or over. School districts include: 35°07′N 103°33′W  /  35.11°N 103.55°W  / 35.11; -103.55 Per capita income Per capita income ( PCI ) or average income measures the average income earned per person in

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180-473: The county was 86.1% white, 1.2% American Indian, 1.1% black or African American, 1.0% Asian, 7.2% from other races, and 3.4% from two or more races. Those of Hispanic or Latino origin made up 42.4% of the population. In terms of ancestry, 11.4% were American , 10.7% were English , 10.5% were German , and 9.8% were Irish . Of the 4,072 households, 26.4% had children under the age of 18 living with them, 43.5% were married couples living together, 12.7% had

195-477: The valley of the Dry Cimarron in 1987 and concluded it was late Albian in age. Quay County, New Mexico Quay County ( / ˈ k w eɪ / ) is a county in the state of New Mexico . As of the 2020 U.S. census , the population was 8,746. Its county seat is Tucumcari . The county was named for Pennsylvania senator Matthew Quay , who supported statehood for New Mexico. Its eastern border

210-500: Was 4 people per square mile (1.5 people/km ). There were 5,664 housing units at an average density of 2 units per square mile (0.77/km ). The racial makeup of the county was 82.09% White , 0.84% Black or African American , 1.27% Native American , 0.80% Asian , 0.15% Pacific Islander , 12.11% from other races , and 2.75% from two or more races. 37.98% of the population were Hispanic or Latino of any race. There were 4,201 households, out of which 28.90% had children under

225-551: Was deposited in a shallow marine. or delta plain environment. This marked the onset of the Greenhorn marine cycle in northeastern New Mexico. The formation contains abundant fossil remains of the oyster Ostrea quadriplicata , a fossil of early Cretaceous age. Dinosaur trackways are preserved in the sandstone and silty sandstone horizons of the formation, which is part of the "dinosaur freeway" megatracksite of New Mexico, Colorado, and Oklahoma. Dinosaur tracks were discovered in

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