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Geologic group of the Amazon Basin in the state of Amazonas of northwestern Brazil From Wikipedia, the free encyclopedia
The Mari Mari Group is an Eifelian to Frasnian geologic group of the Amazon Basin in the state of Amazonas of northwestern Brazil. The group comprises shales and sandstones.[1]
Mari Mari Group | |
---|---|
Stratigraphic range: Eifelian ~ | |
Type | Geological group |
Lithology | |
Primary | Shale |
Other | Sandstone |
Location | |
Coordinates | 6.0°S 70.0°W |
Approximate paleocoordinates | 59.9°S 61.5°W |
Region | Amazonas |
Country | Brazil |
Extent | Amazon Basin |
Type section | |
Named for | Marimari River |
The formation has provided fossils of Tentaculites sp., foraminifera and ostracods.[1][2]
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