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La Meseta Formation
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This article is about an Antarctica sedimentary sequence. For the geological feature, see Mesa. For other uses, see Meseta.
The La Meseta Formation is a sedimentary sequence deposited during the Eocene on Seymour Island off the coast of the Antarctic Peninsula. It is noted for its fossils, which include both marine organisms and the only terrestrial vertebrate fossils from the Cenozoic of Antarctica.[2][4]
Quick Facts Type, Unit of ...
La Meseta Formation | |
---|---|
Stratigraphic range: Eocene | |
Type | Geological formation |
Unit of | Seymour Island Group[1] |
Underlies | Weddell Formation |
Overlies | Lopez de Bertodano, Sobral & Cross Valley Formations |
Thickness | 557 m (1,827 ft)[2] |
Lithology | |
Primary | Sandstone, claystone |
Other | Siltstone, mudstone, conglomerate |
Location | |
Coordinates | 64°14′21.782″S 56°36′11.69″W.[3] |
Approximate paleocoordinates | 63.7°S 61.5°W / -63.7; -61.5 |
Region | Seymour Island |
Country | Antarctica |
![]() Geologic map of Seymour Island, Antarctica with La Meseta Formation in dark yellow |
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