Uttatur Gr
Period:
Cretaceous
Age Interval:
Albian through Turonian (outcrop at Ariyalur area)
Province:
E.India Cauvery Basin
Type Locality and Naming
OUTCROP: ARIYALUR-TRICHIRAPPALLI
[Figure 1: Geologic map of Ariyalur area]
Lithology and Thickness
Limestone and Claystone: a Dalmiapuram Fm limestone, and a Karai Fm claystone. Dalmiapuram Fm and Karai Fm are coeval.
[Figure 2: Generalized Stratigraphy of Cauvery Basin (Provided by A. Nallapa Reddy & R. Nagendra)]
Lithology Pattern:
Clayey limestone
Relationships and Distribution
Lower contact
Next lower formation is the Terani Fm
Upper contact
Overlain by the Garudamangalam Fm
Regional extent
Coeval facies in Sub-surface basins are: Andimadam Fm sandstone; overlain by Sattappadai Fm claystone, then Bhuvanagiri Fm sandstone.
GeoJSON
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Fossils
Age
Albian through Turonian
Age Span:
Beginning stage:
Albian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
113.20
Ending stage:
Coniacian
Fraction up in the ending stage:
0.5
Ending date (Ma):
87.55
Depositional setting
Depositional pattern:
Additional Information
Compiler:
A. Nallapa Reddy & R. Nagendra