Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Provenance and Depositional History of Sandstones from the Upper Miocene Kudankulam Formation, Tamil Nadu


Affiliations
1 Centro de Investigaciones en Clencias de la Tierra, Universidad Autonoma del Estado de Hidalgo, Ciudad Universitaria, Carretera Pachuca-Tulancingo km 4 5, Pachuca, Hidalgo- 42184, Mexico
2 Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, Guindy Campus, Chennai - 600 025, Tamil Nadu, India
     

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Quartz grains from Kudankulam Formation were studied using Scanning Electron Microscope(SEM), which brought out eighteen microtextures. The quartz grams of Kudankulam Formation show different types of conchoidal fracture, arcuate steps, V-shaped patterns, pits and sub angular to Sub-Rounded outline. The presence of conchoidal fracture and arcuate steps suggest that these quartz grains were derived from the nearby crystalline source. The microtextures such as V-shaped patterns, pits, straight and curved scratches are characteristic of marine environment.

Keywords

Quartz Grains, Microtextures, Kudankulam Formation, Provenance, Depositional History, Tirunelveli District, Tamil Nadu.
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  • Provenance and Depositional History of Sandstones from the Upper Miocene Kudankulam Formation, Tamil Nadu

Abstract Views: 182  |  PDF Views: 2

Authors

J. S. Armstrong-Altrin
Centro de Investigaciones en Clencias de la Tierra, Universidad Autonoma del Estado de Hidalgo, Ciudad Universitaria, Carretera Pachuca-Tulancingo km 4 5, Pachuca, Hidalgo- 42184, Mexico
J. Madhavaraju
Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, Guindy Campus, Chennai - 600 025, Tamil Nadu, India
S. Ramasamy
Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, Guindy Campus, Chennai - 600 025, Tamil Nadu, India
N. Gladwin Gnana Asir
Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, Guindy Campus, Chennai - 600 025, Tamil Nadu, India

Abstract


Quartz grains from Kudankulam Formation were studied using Scanning Electron Microscope(SEM), which brought out eighteen microtextures. The quartz grams of Kudankulam Formation show different types of conchoidal fracture, arcuate steps, V-shaped patterns, pits and sub angular to Sub-Rounded outline. The presence of conchoidal fracture and arcuate steps suggest that these quartz grains were derived from the nearby crystalline source. The microtextures such as V-shaped patterns, pits, straight and curved scratches are characteristic of marine environment.

Keywords


Quartz Grains, Microtextures, Kudankulam Formation, Provenance, Depositional History, Tirunelveli District, Tamil Nadu.