Mari Mari Group
Mari Mari Group Stratigraphic range: Eifelian ~ | |
---|---|
![]() Late Devonian paleogeography (380 Ma) | |
Type | Geological group |
Lithology | |
Primary | Shale |
Other | Sandstone |
Location | |
Coordinates | 6°00′S 70°00′W / 6.0°S 70.0°WCoordinates: 6°00′S 70°00′W / 6.0°S 70.0°W |
Approximate paleocoordinates | 59°54′S 61°30′W / 59.9°S 61.5°W |
Region | Amazonas |
Country | ![]() |
Extent | Amazon Basin |
Type section | |
Named for | Marimari River |
![]() ![]() Mari Mari Group (Brazil) |
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]
Fossil content[]
The formation has provided fossils of Tentaculites sp., foraminifera and ostracods.[1][2]
References[]
- ^ a b Mari Mari Group at Fossilworks.org
- ^ Melo, 1988
Bibliography[]
- . 1988. The Malvinokaffric realm in the Devonian of Brazil. N. J. McMillan, A. F. Embry, and D. J. Glass, eds. Devonian of the World, Volume I, 669–703. Canadian Society of Petroleum Geologists. Calgary, Alberta, Canada.
Categories:
- Geologic groups of South America
- Geologic formations of Brazil
- Devonian System of South America
- Devonian Brazil
- Eifelian Stage
- Shale formations
- Sandstone formations
- Devonian south paleopolar deposits
- Devonian southern paleotemperate deposits
- Paleontology in Brazil
- Geography of Amazonas (Brazilian state)