Diagenetic evolution of onshore Campanian Sandstone, Ariyalur-Cauvery Basin

  • R Nagendra Anna University, Chennai

Abstract

The onshore Campanian (Sillakkudi Fm.) sandstone is sub-angular to angular sorted grains of quartz (97%), feldspar (2.5%) and lithic fragments (0.5%) of continental block provenance derived by the rapid rate of erosion under hot and humid climate. The fabric signifies the free-floating (33%), point contact (46%), long contact (17%), suture contact (2.5%) and concavo-convex contact (1.5%). The relatively high percentage of free-floating grains and point contact cemented by calcite cement, suggesting the early cementation process and diminutive compaction. Whereas the 63% of point and long contact and 4% of the suture and concavo-convex contact symptomatic of the early calcite cementation and mechanical compaction in excess of the chemical compaction.

Published
Dec 31, 2018
How to Cite
NAGENDRA, R. Diagenetic evolution of onshore Campanian Sandstone, Ariyalur-Cauvery Basin. Journal of The Indian Association of Sedimentologists, [S.l.], v. 35, n. 2, p. 50 - 58, dec. 2018. ISSN 0970-3268. Available at: <http://journal.indiansedimentologists.com/ojs/index.php/1/article/view/26>. Date accessed: 18 jan. 2019.