Английская Википедия:Diamond Tail Formation

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Шаблон:Use American English Шаблон:Short description Шаблон:Infobox rockunit

The Diamond Tail Formation is a geologic formation in New Mexico. It contains fossils characteristic of the late Paleocene or early Eocene.

Description

Файл:Diamond Tail Formation.jpg
Diamond Tail Formation near Los Cerros, New Mexico

The Diamond Tail Formation consists of a lower member composed of sandstone and conglomeratic sandstone, a middle member of variegated mudstone, and an upper sandstone member. The formation crops out over a limited area between Sandia Crest and the southern Sangre de Cristo Mountains.

The formation is cut by thrust and strike-slip faults consistent with east-northeast to east-trending tectonic compression of the late stages of the Laramide Orogeny.Шаблон:Sfn

The formation likely correlates with the lower San Jose Formation of the San Juan Basin.Шаблон:Sfn

Fossils

The presence of Hyracotherium teeth dates the formation to the late Paleocene or early Eocene.Шаблон:Sfn

History

The beds now designated as the Diamond Tail Formation were originally part of F.V. Hayden's Galisteo sand group.Шаблон:Sfn By 1997, it was clear that these beds were separated from the remainder of the Galisteo by a significant regional unconformity, and they were split off into the Diamond Tail Formation, named after exposures near Diamond Tail Ranch.Шаблон:Sfn

Footnotes

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References

See also

Шаблон:Portal