U-Pb zircon age constraints on the vertebrate assemblages and palaeomagnetic record of the Guadalupian Abrahamskraal Formation, Karoo Basin, South Africa

2021 ◽  
pp. 104435
Author(s):  
Michael O. Day ◽  
Jahandar Ramezani ◽  
Ryan E. Frazer ◽  
Bruce S. Rubidge
Keyword(s):  
South Africa ◽  
Zircon Age ◽  
Karoo Basin ◽  
Age Constraints

scholarly journals A Lacustrine Glacier Retreat Sequence from the Permo-Carboniferous Dwyka Formation, Republic of South Africa

1983 ◽  
Vol 29 (103) ◽  
pp. 515-520
Author(s):  
J. N. J. Visser
Keyword(s):  
South Africa ◽  
Lacustrine Sediments ◽  
Glacier Retreat ◽  
Marine Transgression ◽  
Northern Margin ◽  
Valley Fill ◽  
Karoo Basin ◽  
Ice Retreat ◽  
Glacier Advance

Abstract The upper part of a Permo-Carboniferous glacial valley fill along the northern margin of the Karoo Basin includes glacio-lacustrine sediments. During the last glacier advance into the lake, a bedded heterogeneous diamictite facies was deposited and, on glacier retreat, a sequence of deformed siltstones with diamictite lenses and sandstone beds, varved shale and rhythmite shale was laid down. Black carbonaceous mud was deposited during the subsequent marine transgression. According to varve counts, the glacier receded from the valley over a period of 500 to 1 000 years and it is concluded that the overall ice-retreat rate during the Permo-Carboniferous deglaciation was relatively high.

Latest Permian insects from Wapadsberg Pass, southern Karoo Basin, South Africa

2021 ◽  
Author(s):  
Abraham I Pretorius ◽  
Conrad C Labandeira ◽  
André Nel ◽  
Rose Prevec
Keyword(s):  
South Africa ◽  
Karoo Basin

U-Pb zircon ages from the southwestern Karoo Basin, South Africa--Implications for the Permian-Triassic boundary

Geology ◽  
2009 ◽  
Vol 37 (8) ◽  
pp. 719-722 ◽  
Author(s):  
A. Fildani ◽  
A. Weislogel ◽  
N. J. Drinkwater ◽  
T. McHargue ◽  
A. Tankard ◽  
...  
Keyword(s):  
South Africa ◽  
Triassic Boundary ◽  
Karoo Basin ◽  
Permian Triassic Boundary
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