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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Prahalad Rao Memorial Lecture Dr. How to cite item. Except in the Chhatisgarh and coastal plains, the basin has an extensive area under forests.

Wadia Endowment Lecture G. Abstract Outcrops ranging in age from Late Jurassic czuvery Recent are located nearer the western margin of the basin. Forest and agriculture are the main stay of the people in the interior parts of the basin. The main soil types found in the basin are red and yellow soils.

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Email this article Login required. Cauvery then enters the Mysore district where important tributaries joining the river from the left are the Harangithe Hemavathithe Shimsha ccauvery the Arkavathi. Outcrops ranging in age from Late Jurassic to Recent are located nearer the western margin of the basin. Major Tributaries with drainage area in sq.

It is bounded on the west by the Western Ghats bssin, on the east and south by the Eastern Ghats and on the north by the ridges separating it from the Tungabhadra Krishna and Pennar basins.


Sawkar endowment for Teachers training V. Alluvial soils are found in the delta areas. Physiographicallythe basin can be divided into three parts: The Dharwar metamorphics mainly comprise of phyllitesslates, schists with chlorite, biotitegarnet, and bassin. A major regression occurred during the close of Cretaceous. Naqvi Gold Medal K.

Cauvery Basin: Geology

The north-east monsoon provides the greater portion of the annual precipitation. Article Tools Geolkgy this article. Vaidyanadhan Award Endowment Lecture C. Marine environment of sedimentation continued till Cretaceous, although through a series of minor transgressions and regressions.

Initial sedimentation was under non-marine environment. Here, the main climatic feature is the monsoon rain. The geology of the drainage basin is predominantly formed from Precambrian rocks, principally the DharwarsPeninsular granitic Gneiss, Charnockites and the Closepet Granite.

The important tributaries joining Cauvery in the Coorg district are the Kakkabethe Kadanur and cajvery Kummahole. Climate of Cauvery B asin.

Statewise Drainage Area Km 2. Several studies were made by the Central Pollution Control Board to ascertain the status of water quality in the Cauvery River.

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. The tributaries joining it from the right are the Lakshmanathirthathe Kabbaniand the Survanavathi. Occasional flood problem in lower reaches and delta areas of Cauvery river. The principal soil types found in the basin are black bqsin, red soils, lateritesalluvial soils, forest soils, and mixed soils.

The total length of the river from source to its outfall into Bay of Bengal is about km.


About the Cauvery Basin

The basin underwent an easterly tilt and the depocentres shifted due east prior to marine transgression during the beginning of Tertiary. Mixed red and black soils occur in parts of the BolangirSambalpurand Sundargarh districts of Orissa. Subscription Login to verify subscription Purchased Articles. Depressions in the Bay of Bengal affect the basin in the monsoon, causing cyclones and widespread heavy rains.

These are represented by gabbros, olivine noritesand pyroxene. Total Drainage Area Km 2. The culturable area of the basin is about 58, km 2 which is about three percent of the culturable area of the country. The first marine transgression occurred during the close of Late Jurassic. The Cauvery basin extends over an area of 81, km 2which is nearly Mahadevan Endowment Lecture R.

Black soil and sandy soil with ” Kankar ” are the main soils found in the part of basin lying in Chhattisgarh. Krishnaraja sagar dam, NuguMettur and Grand Anicut projects.

The shape of the basin is somewhat rectangular with a maximum length and breadth of km and km, respectively. Red soils occupy large areas in the basin. The highest rainfall in the basin is received along the western border of the basin during the southwest monsoon. The Chhatisgarh and coastal plains, with a high incidence of rainfall, are predominantly rice growing areas.