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Shaded relief map of the Llano Estacado. Texas contains a wide variety of geologic settings. The state's stratigraphy has been largely influenced by marine transgressive-regressive cycles during the Phanerozoic, with a lesser but still significant contribution from late Cenozoic tectonic activity, as well as the remnants of a Paleozoic mountain range.
This article contains a list of fossil-bearing stratigraphic units in the state of Texas, U.S. Sites. Group or Formation ... "U.S. Geologic Names Lexicon ("Geolex ...
The Edwards Plateau is a geographic region forming the crossroads of Central, South and West Texas, United States.It is named in honor of Haden Edwards. [2] It is bounded by the Balcones Fault to the south and east; the Llano Uplift and the Llano Estacado to the north; and the Pecos River and Chihuahuan Desert to the west. [3]
The Goliad Formation (Tg) [1] is a geologic formation in Texas.It preserves fossils dating back to the Serravallian to earliest Pliocene stages (Clarendonian, Hemphillian and earliest Blancan in the NALMA classification) of the Neogene period, [2] including the gomphothere Blancotherium among many other fossil mammals, reptiles, birds and fish.
Geologic provinces of Texas (7 P) Geology of Dallas (2 P) I. Igneous petrology of Texas (1 C, 1 P) M. Mining in Texas (1 C, 3 P) O. Oil fields in Texas (16 P) P.
The geography of Texas is diverse and large. Occupying about 7% of the total water and land area of the U.S., [1] it is the second largest state after Alaska, and is the southernmost part of the Great Plains, which end in the south against the folded Sierra Madre Oriental of Mexico.
The Texas and Oklahoma red beds are sedimentary rocks, mostly consisting of sandstone and red mudstone. [8] The red color of the rocks is due to the presence of ferric oxide . [ 9 ] The rocks were deposited during the early Permian in a warm, moist climate, [ 10 ] with seasonal periods of dry conditions.
The term is considered synonymous with Far West Texas, a subdivision of West Texas. [2] The Trans-Pecos is part of the Chihuahuan Desert , the largest desert in North America . It is the most mountainous and arid portion of the state, and most of its vast area (outside the city of El Paso ) is sparsely populated.
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