Map of India showing Cauvery Basin, b. Geological map of the Ariyalur Sub- basin showing the distribution of Cretaceous and Tertiary formations (modified after. Cauvery Basin: Geology. Cauvery basin forms a part of the South Indian Shield that preserves an early formed crust (> Ma). In terms of rock types. Biostratigraphy and Evolution of the Cauvery Basin, India. KING, W. and FOOTE, R. B., () On the geological structure of portions of the district of.

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The depocentres were mainly due west.

Cauvery Basin: Geology

The Closepet Granite of the upper reaches of the Cauvery basin is a pink granite consisting mainly of quartz, plagioclase, microcline, perthiteand subordinate hornblende. The geoloyg area of the basin is about 58, km 2 which is about three percent of the culturable area of the country. Mahadevan Endowment Lecture R. The important tributaries joining Cauvery in the Coorg district are the Kakkabethe Kadanur and the Kummahole.

The results show that at many places, the quality of water was quite poor compared to what was the desired class. Vaidyanadhan Award Endowment Lecture C. Accompanying geo,ogy are greenstones and quartzite. The eastern side of the cauvvery gets most of the rain during the northeast monsoon. A major regression occurred during the close of Cretaceous.

Abstract Outcrops ranging in age from Late Jurassic to Recent are located nearer the western margin of the basin. Prahalad Rao Memorial Lecture Dr. Cauvery then enters the Cahvery district where important tributaries joining the river from the left are the Harangithe Hemavathithe Shimsha and the Arkavathi.


The main soil types found in the basin are red and yellow soils. Krishnaraja sagar dam, NuguMettur and Grand Anicut projects.

The basin was well differentiated into depressions and ridges formed owing to taphrogenic fragmentation and block faulting along the dominant basement trends during the onset of Late Jurassic.

Sedimentation during the Tertiary period was marked by repeated transgressions basln regressions as is evidenced by biofacies, isopachs, and several sedimentation breaks which are relatively more pronounced in the western parts of the basin.

Future Challenges in Earth Gondwana System, Aligarh, India, Ann. The principal soil types found in the basin are black soils, red soils, lateritesalluvial soils, forest soils, and mixed soils. Cretaceous sediments crop out in the coastal region and consist of conglomeratic sandstone, coralline limestone, and shale.

About the Cauvery Basin

The delta area is the most fertile tract fo the basin. Suryaprakash Rao Endowment Lecture K. Further down, the river enters Tamil Nadu state where the many tributaries, namely, the Bhavanithe Noyiland the Amravathi join it. Occasional flood problem in lower reaches and delta areas of Cauvery river. Soil of the Basin. Red soils occupy large areas in the basin. The tributaries joining it from the right are the Lakshmanathirthathe Kabbaniand the Survanavathi. Several studies were made by the Central Pollution Control Board to ascertain the status of water quality in the Cauvery River.

The Chhatisgarh and coastal plains, with a high incidence of rainfall, are predominantly rice growing areas. Wadia Endowment Lecture G.

The Cauvery basin extends over an area of 81, km 2which is nearly Outcrops bsain in age from Late Jurassic to Recent are located nearer the western margin of the basin. The geology of the drainage basin is predominantly formed from Precambrian rocks, principally the DharwarsPeninsular granitic Gneiss, Charnockites and the Closepet Granite.


Black soil and sandy soil with ” Kankar ” are the main soils found in the part of basin lying in Chhattisgarh. The differentiation of the basin into depressions and ridges was almost lost during Eocene.

Forest and agriculture are the main stay of the people in the interior parts of the basin. Sawkar endowment for Teachers training V. The Charnockites are confined to the Nilgiri Range in the central part of the drainage basin. Except in the Chhatisgarh and coastal plains, the basin has an extensive area under forests. Baain Gold Medal K. Soil and Land use of Basin. Statewise Drainage Area Km 2.

How to cite item. The far north-western part of the drainage basin has a per-humid climate which passes eastwards into humid, moist sub-humid, dry sub-humid and semi-arid zones. The total length of the river from source to its outfall into Bay of Bengal is about km.

Laterite soil is found in the lower parts of Orissa. Physiographicallythe basin can be divided into three parts: Article Tools Print this article. It is bounded on the west by the Western Ghatson the east and south by the Eastern Ghats and on the cauverh by the ridges separating it from the Tungabhadra Krishna and Pennar basins. Email the author Login required. Geology of the Basin.