Factors controlling in the concentration of gold and uranium in the Lower Carboniferous marl at Wadi El Kharig area, Southwestern Sinai, Egypt

2020 ◽  
Vol 13 (17) ◽  
Author(s):  
Osama R. Sallam
Keyword(s):  
Lower Carboniferous ◽  
Southwestern Sinai

Lithostratigraphy of the Kweekvlei Formation (Witteberg Group), Cape Supergroup

2017 ◽  
Vol 120 (3) ◽  
pp. 421-432 ◽  
Author(s):  
C. Browning ◽  
M. Reid
Keyword(s):  
South Africa ◽  
Transition Zone ◽  
Distal Part ◽  
Vascular Plant ◽  
Trace Fossil ◽  
Plant Debris ◽  
Lower Carboniferous ◽  
Fossil Assemblage ◽  
Low Diversity ◽  
Storm Wave

AbstractThe Lower Carboniferous, probably Tournaisian, Kweekvlei Formation is part of the Witteberg Group (Cape Supergroup) of South Africa. Together with the overlying Floriskraal Formation, it forms an upward-coarsening succession within the Lake Mentz Subgroup. Sedimentary features of the Kweekvlei Formation suggest deposition in a storm-wave dominated marine setting, within the storm-influenced, distal part of an offshore transition zone environment. This predominantly argillaceous formation preserves a low diversity trace fossil assemblage. Reworked vascular plant debris (including the problematic genus Praeramunculus sp.) and a shark spine have been reported for the Kweekvlei Formation. There are no known stratigraphic equivalents in South Africa.

The Mississippian (Lower Carboniferous) in northeast Spitsbergen (Svalbard) and a re-evaluation of the Billefjorden Group

2012 ◽  
Vol 163 (3) ◽  
pp. 293-308 ◽  
Author(s):  
Christian Scheibner ◽  
Christoph Hartkopf-Fröder ◽  
Dierk Blomeier ◽  
Holger Forke
Keyword(s):  
Lower Carboniferous

scholarly journals II.—Description of a Fossil Shark (Ctenacanthus costellatus) from the Lower Carboniferous Rocks of Eskdale, Dumfriesshire

1884 ◽  
Vol 1 (1) ◽  
pp. 3-8 ◽  
Author(s):  
R. H. Traquair
Keyword(s):  
Lower Carboniferous ◽  
General Organization

The deficiency of our knowledge of the organization and configuration of the Palaeozoic Selachii is an unfortunate fact too well known to biologists to render it necessary for me to dilate upon here. Immense numbers of genera and species have been founded upon detached teeth and spines; but as yet very few specimens have occurred, which threw any light upon the general organization and configuration of the ancient possessors of these now scattered relics.

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