Weches Formation | |
---|---|
Stratigraphic range: Paleogene | |
Type | Formation |
Lithology | |
Primary | sandstone, shale, clay |
Other | marl, limestone |
Location | |
Region | Louisiana, Texas |
Country | United States |
The Weches Formation is a greensand, slay, and shale geologic formation in Louisiana and Eastern Texas. [1] [2] It preserves fossils dating back to the Paleogene period, specifically the Eocene.
The Weches Formation is a fossiliferous glauconite rich sand that graduates into a clay. [2] It is considered one of the principal iron bearing beds in Eastern Texas, and is mined for sand in gravel in parts of Texas where exposed. [2] [3] The Weches Formation was originally called the Weches Greensand, and was considered a member of the Mount Selman Formation before being raised to formation status. [2] [4]