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Clay minerals; Lameta; paleoclimate; palygorskite–sepiolite

This report highlights the record of clay minerals from the Lameta Formation of a new locality of central India. A 9-m thick argillaceous column represented by various shades of grayish-greenish-brownish-yellowish coloured clay to silty-clay has been investigated. The clay has been separated from the host sediment by pipette method which has been further subjected to XRD analysis. The peaks identified are of palygorskite, sepiolite, illite, montmorillonite and kaolinite. The assemblage is interpreted to be a product of arid to semi-arid climatic condition due to weathering of pre-existing rocks. The depositional site also shows the possibility of short term marine incursion.

ASHOK K SRIVASTAVA¹ NEELAM K KANDWAL¹ A KRISHNAKUMAR² K ANOOP KRISHNAN²

1. Department of Geology, SGB Amravati University, Amravati 444 602, India.
2. National Centre for Earth Science Studies (NCESS), Akkulam, Trivandrum 695 031, India.

Published

1 January 2020

Manuscript received

2 July 2019

Manuscript revised

11 September 2019

Accepted

12 September 2019

Early published

Unedited version published online

Final version published online

20 December 2019