Английская Википедия:Indian Point Formation
Шаблон:Infobox rockunit The Indian Point Formation is a geologic formation in Quebec. It preserves fossils dating back to the Ludlow epoch of the Silurian period.[1]
Description
The Indian Point Formation comprises thin- to thick-bedded, locally fossiliferous, calcareous siltstones, fine-grained sandstones, calcarenites, and minor biostromal limestones, conglomerates, red siltstones, and mafic volcanic rocks. The Indian Point Formation is conformably overlain by within-plate tholeiitic mafic to intermediate flows and flow breccias of the Archibald Settlement Formation, developed as a synsedimentary normal fault in the Late Silurian, based on the presence of polymictic conglomerate beds in a thickened Indian Point section east of the fault. Post-Early Devonian (Acadian) orogenic events have produced open to close folds with northeast-trending axes.[2]
Fossil content
The following fossils were reported from the formation:[1][3]
Eurypterids
Pterobranchia
See also
- List of fossiliferous stratigraphic units in Quebec
- Bertie Formation, Silurian Lagerstätte in Ontario
- Charlevoix impact structure, Silurian impact structure in Quebec
References
Bibliography
- ↑ 1,0 1,1 Indian Point Formation at Fossilworks.org
- ↑ Eurypterid-associated biota of Indian Point Fmn. in Gaspe National Park at Fossilworks.org
- ↑ Plotnick, 1999
- Английская Википедия
- Geologic formations of Canada
- Silurian System of North America
- Silurian Quebec
- Ludlow epoch
- Sandstone formations of Canada
- Siltstone formations
- Conglomerate formations
- Silurian volcanism
- Silurian southern paleotemperate deposits
- Paleontology in Quebec
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- Страницы с телепортом
- Википедия
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