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The Wallace line or Wallace's line is a faunal boundary line drawn in 1859 by the British naturalist Alfred Russel Wallace and named by the English biologist T.H. Huxley. It separates the biogeographical realms of Asia and ' Wallacea ', a transitional zone between Asia and Australia formerly also called the Malay Archipelago and the Indo ...
An important geologic feature of New Mexico is the Rio Grande Rift. This extends from central Colorado to northern Chihuahua , Mexico , passing from north to south through the center of the state, cutting across the southern Rocky Mountains and the Basin and Range provinces, and roughly coinciding with the valley of the Rio Grande River . [ 9 ]
The McRae Group is a geological group exposed in southern New Mexico whose strata, including layers of the Hall Lake Formation and Jose Creek Formation, date to the Late Cretaceous. [1] Dinosaur remains are among the fossils that have been recovered from this unit.
The Hall Lake Formation, formerly called the Hall Lake Member, is a geological formation in Sierra County, New Mexico preserving Lancian fauna, most notably dinosaurs. It is regarded as a member of the McRae Group , including the Elephant Butte and Staton-LaPoint locales.
The Laurentian Divide (green) extends from Triple Divide Peak in northwestern Montana to the tip of the Labrador Peninsula at the 60th parallel north.. The Laurentian Divide also called the Northern Divide [1] and locally the height of land, is a continental divide in central North America that separates the Hudson Bay watershed to the north from the Gulf of Mexico watershed to the south and ...
The Santa Fe Group is a group of geologic formations in New Mexico and Colorado. It contains fossils characteristic of the Oligocene through Pleistocene epochs . The group consists of basin -filling sedimentary and volcanic rocks of the Rio Grande rift , and contains important regional aquifers .
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"Geological studies of the Guadalupe Mountains area, New Mexico and West Texas, to 1928" (PDF). New Mexico Geological Society Field Conference Series. 57: 127– 144; Lang, W.B. (1937). "The Permian formations of the Pecos Valley of New Mexico and Texas". American Association of Petroleum Geologists Bulletin. 21 (7): 833– 898.