Middleton Fm
Period:
Permian
Age Interval:
Wordian (mid-Middle Permian)
Province:
Karoo Basin
Type Locality and Naming
Synonym:
Lithology and Thickness
Koonap-Middleton sequence consist of a general fining-upward mudrock-dominated succession with sequences comprising of sandstone, siltstone and mudstones deposited by delta distributary and meandering river channels.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Koonap Fm (conformable)
Upper contact
Balfour Fm (conformable)
Regional extent
Karoo Basin
GeoJSON
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Fossils
Age
Wordian
Age Span:
Beginning stage:
Wordian
Fraction up in beginning stage:
0.23
Beginning date (Ma):
268.09
Ending stage:
Wordian
Fraction up in the ending stage:
0.8
Ending date (Ma):
265.31
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Rebecca Bobick (and Wen Du), modified from Fig. 2. from Catuneanu, O., et al.,"The Karoo basins of south-central Africa", Journal of African Earth Sciences 43 (2005), 211-254