Geochemical characterisation of the Cretaceous-Tertiary Boundary sediments at Anjar, India

P.N. Shukla; A.D. Shukla; N. Bhandari

doi:10.54991/jop.1997.1326

Authors

P.N. Shukla Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India
A.D. Shukla Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India
N. Bhandari Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India

DOI:

https://doi.org/10.54991/jop.1997.1326

Keywords:

Cretaceous-Tertiary Boundary, Iridium anomaly, Kutch Basin, India

Abstract

Geochemical, geochronological, palaeomagnetic and palaeontological evidences that show that the third Intertrappean bed at Anjar encompasses the Cretaceous-Tertiary boundary are described. Presence of three well separated iridium rich horizons indicates multiple depositional events. Their origin in volcanic or multiple cometary impacts is discussed. The results are compared with the chemical anomalies observed in Um Sohryngkew River Section in Meghalaya.

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