Now showing items 1-4 of 4
Permian non-marine bivalves of the Falkland Islands and their palaeoenvironmental significance
(Alcheringa, 2012-12-01) [Artigo]
We describe the occurrence of non-marine bivalves in exposures of the Middle Permian (Capitanian) Brenton Loch Formation on the southern shore of Choiseul Sound, East Falklands. The bivalves are associated with ichnofossils ...
The puzzle assembled: Ediacaran guide fossil Cloudina reveals an old proto-Gondwana seaway
(Geology, 2014-05-01) [Artigo]
During the Ediacaran the Clymene Ocean separated the Laurentia, Amazonia, and Rio Apa cratons from several landmasses to the west forming the proto-Gondwana supercontinent. However, no clear evidence about the existence ...
A formação Serra Alta, Permiano, no centro-leste do Estado de São Paulo, Bacia do Paraná, Brasil
(Brazilian Journal of Geology, 2015-03-01) [Artigo]
The delimitation and mapping of the Serra Alta Formation in the São Paulo State, Brazil, has always been a focus of controversy in the Brazilian geological community. Despite its large extension in subsurface, which may ...
The interplay between event and background sedimentation and the origin of fossil-rich carbonate concretions: a case study in Permian rocks of the Paraná Basin, Brazil
(Lethaia, 2015) [Artigo]
The Permian Serra Alta Formation was generated under transgressive conditionswithin a large, calm epeiric sea. A monotonous succession of ‘barren’, massive mud-stones deposited under oxygen-deﬁcient conditions (mainly below ...