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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Except in the Chhatisgarh and coastal plains, the basin has an extensive area under forests. Statewise Drainage Area Km 2. Abstract Outcrops ranging in age from Late Jurassic to Recent are located nearer the western margin of the basin.

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

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

Wadia Endowment Lecture G. The differentiation of the basin into depressions and ridges was almost lost during Eocene.

The shape cxuvery the basin is somewhat rectangular with a maximum length and breadth of km and km, respectively. Article Tools Print this article.


Cauvery Basin: Geology

Prahalad Rao Memorial Lecture Dr. Marine environment of sedimentation continued till Cretaceous, although through a series of minor transgressions and regressions. Email the author Login required. Total Drainage Area Km 2. The Chhatisgarh and coastal plains, with a high incidence of rainfall, are predominantly rice growing areas.

Over the main basin, the peninsular granites and gneisses comprising of biotite granitic gneiss, hornblende granitic gneiss goelogy widely found. Initial sedimentation was under non-marine environment. The eastern side of the basin gets most of the rain during the northeast monsoon. 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 oof zones. Further down, the river enters Tamil Nadu state where the many tributaries, namely, the Bhavanithe Noyiland the Amravathi join it.

Karanth Endowment Lecture T. Physiographicallythe basin can be divided into three parts: The eastern parts of the basin are covered by alluvium and contain a relatively basih and more complete sedimentary sequence. Email this article Login required. The principal soil types found in the basin are black soils, red soils, lateritesgeologt soils, forest soils, and mixed soils. Geology of the Basin. Mixed red and black soils occur in parts of the BolangirSambalpurand Sundargarh districts of Orissa.

Naqvi Gold Medal K. Here, the main climatic feature is the monsoon rain. Vaidyanadhan Award Endowment Lecture C.


Cauvery Basin: Geology

The culturable area of the basin is about 58, km 2 which is about three percent of the culturable area of the country. The results show that at many places, the quality of water was quite poor compared to what was the desired class.

Accompanying these are greenstones and quartzite. Krishnaraja sagar dam, NuguMettur and Grand Anicut projects. These are represented by gabbros, olivine noritesand pyroxene. Alluvial soils are found in the delta areas. The deltaic soil is found in the coastal plains of the Mahanadi. The delta area is the most fertile tract in the basin.

The first marine transgression occurred during the close of Late Jurassic. Gondwana System, Aligarh, India, Ann. The main soil types found in the basin are red and yellow soils. The important tributaries joining Cauvery in the Coorg district are the Kakkabethe Kadanur and the Kummahole.

Cauvery basin experiences tropical climate. The Charnockites are confined to the Nilgiri Range in the central part of the drainage basin. The Closepet Granite of the upper reaches of the Cauvery basin is a pink granite consisting mainly of quartz, plagioclase, microcline, perthite gfology, and subordinate hornblende.