4-575: The Orogrande Basin is a geologic province in southern New Mexico and western Texas . It includes Doña Ana , Sierra , Socorro , Lincoln , and Otero Counties in New Mexico and El Paso County, Texas . The province takes its name from the community of Orogrande, New Mexico . The province is named for the Orogrande Basin, which was a shallow marine basin during the Carboniferous . This basin
8-404: Is a spatial entity with common geologic attributes. A province may include a single dominant structural element such as a basin or a fold belt , or a number of contiguous related elements. Adjoining provinces may be similar in structure but be considered separate due to differing histories . Some studies classify provinces based upon mineral resources, such as mineral deposits. There are
12-721: The Sacramento Shelf, was located between the basin and mountain range, and formations in this area from the Carboniferous are notable for their algal mounds. This steep shelf margin gave way further west to a gently-inclined ramp, the Robledo Ramp. The Gobbler Formation is typical of middle Pennsylvanian deposition in the basin. The Orogrande Basin was centered on the present-day Tularosa Basin . 32°24′N 106°06′W / 32.4°N 106.1°W / 32.4; -106.1 Geologic province A geologic province
16-575: Was one of several basins that opened along the southwestern margin of the North American craton due to crustal stress from the Ouachita Orogeny . At this time, this area was very close to the equator. Up to 910 meters (3,000 ft) of limestones and shales were deposited. These included sediments from a Carboniferous mountain range, the Pedernal Uplift, located to the east. A narrow shelf,
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