Katamdevarahalli Limestone Fm
Period:
Tonian
Age Interval:
Late Tonian
Province:
Proterozoic S.India Bhima Basin
Lithology and Thickness
Limestone. Sand-free flaggy limestsone (Fig – image D)
[Figure Bhima Gr gield photographs illustrating lithology and sedimentary structures. Rabanpalli Fm - (A) Granule conglomerate and coarse grained sandstone alternation; and (B) Thick-bedded, planar cross-stratified beds alternating with planar parallel beds. (C) Shahabad Limestone Fm - limestone-marl rhythmite. (D) Gray flaggy limestone (Katamdevarahalli Limestone Fm), over brown shale of Halkal Fm. Note sharp contact (black arrow) between the two. (from Saha et al., 2016)]
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Underlain by Halkal Fm shale (Fig – image D)
Upper contact
Overlain by Harwal Fm shale
Regional extent
GeoJSON
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Fossils
Age
Age Span:
Beginning stage:
Tonian
Fraction up in beginning stage:
0.82
Beginning date (Ma):
770.40
Ending stage:
Tonian
Fraction up in the ending stage:
0.84
Ending date (Ma):
764.80
Depositional setting
Non-stromatolitic carbonate platform
Depositional pattern:
Additional Information
Compiler:
From: Saha D. (Dilip), Patranabis-Deb, S., and Colllins, A.S. (2016) Proterozoic stratigraphy of southern Indian cratons and global context. In: Stratigraphy & Timescales, 1: 1-59.