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The Permian Basin is the thickest deposit of Permian aged rocks on Earth which were rapidly deposited during the collision of North America and Gondwana (South America and Africa) between the late Mississippian through the Permian. The Permian Basin also includes formations that date back to the Ordovician Period, 445 million years ago .
The Phosphoria Formation of the western United States is a geological formation of Early Permian age. [4] It represents some 15 million years of sedimentation, reaches a thickness of 420 metres (1,380 ft) and covers an area of 350,000 square kilometres (140,000 sq mi).
The formation has also produced plant, bivalve, conchostracan and vertebrate fossils [2] in locations such as the Spanish Queen mine near Jemez Springs, [11] which date it to the Wolfcampian (lower Permian period). Plant fossils found in the Abo Formation are mostly conifers and show two distinct paleofloras.
Thus the Arroyo de Alamillo Formation is siltstone, ripple-laminated sandstone, and lesser dolomitic limestone, in contrast with the eolian beds of the De Chelly Formation, and the Los Vallos Formation is 42% sandstone, 28% siltstone, and 24% gypsum, in contrast with the thinly bedded sandstone of the San Ysidro Formation. [10]
Permian Basin is in geology the name of two large intercontinental basins that were formed in the Permian period, neither of which are in Perm Krai: Permian Basin (North America) , a basin in the subsurface of the south of the United States, in west Texas and southeast New Mexico
The Permian Hermit Formation, also known as the Hermit Shale, is a nonresistant unit that is composed of slope-forming reddish brown siltstone, mudstone, and very fine-grained sandstone. Within the Grand Canyon region, the upper part of the Hermit Formation contains red and white, massive, calcareous sandstone and siltstone beds that exhibit ...
In large parts of Pangaea, the last phases of the Hercynian orogeny were still ongoing during the start of the Permian. At the same time local crustal extension formed intramontane basins such as the large Permian Basin which covered parts of present-day Germany, Poland, Denmark, the North Sea, the Baltic Sea and the Netherlands.
The Cutoff Formation consists of 233 feet (71 m) [1] feet of thin limestone beds interbedded with dark shale and sandstone. It grades northwards into the San Andres Formation and is likely correlative with the upper part of the Bone Spring Formation within the Delaware Basin. In age, the formation straddles the Cisuralian - Guadalupian boundary ...