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 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. Wadia Endowment Lecture G. Here, the main climatic feature is the monsoon rain.

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These are represented by gabbros, olivine noritesand cauvert. Gupta Gold Medal L. The shape of the basin is somewhat rectangular with a maximum length and breadth of km and km, respectively.

Climate of Cauvery B asin. The first marine transgression occurred during the close of Late Jurassic. Water Potential of the Basin. Outcrops ranging in age from Late Jurassic to Recent are located nearer the western margin of the basin.

The tributaries joining it from the right are the Lakshmanathirthathe Kabbani bssin, and the Survanavathi.

Biostratigraphy and Evolution of the Cauvery Basin, India | Sastri | Geological Society of India

The culturable area of the basin og about 58, km 2 which is about three percent of the culturable area of the country. Krishnaraja sagar dam, NuguMettur and Grand Anicut projects. The important tributaries joining Cauvery in the Coorg district are the Kakkabethe Kadanur and the Kummahole.


The Cauvery basin extends over an area of 81, km 2which is nearly The total length of the river from source to its outfall into Bay of Bengal is about km.

Gondwana System, Aligarh, India, Ann. Abstract Outcrops ranging in age from Late Jurassic to Recent are located nearer the western margin of the basin. Email the author Login required. Marine environment of sedimentation continued till Cretaceous, although through a series of minor transgressions and regressions. Statewise Drainage Area Km 2. A major regression occurred during cauveyr close of Cretaceous.

Geloogy geology of the drainage basin is predominantly formed from Precambrian rocks, principally the DharwarsPeninsular granitic Gneiss, Charnockites and the Closepet Granite. The differentiation of the basin into depressions and ridges was almost lost during Eocene. Alluvial soils are found in the delta areas. Accompanying these are greenstones and cauvrry. The Dharwar metamorphics mainly comprise of phyllitesslates, schists with chlorite, biotitegarnet, and hornblende.

Physiographicallythe basin can be divided into three parts: Soil of the Basin. Over the main basin, the peninsular granites and gneisses comprising of biotite granitic gneiss, hornblende granitic gneiss are widely found. Further down, the river enters Tamil Nadu state where the many tributaries, namely, the Bhavanithe Noyiland the Amravathi join it. Total Drainage Area Km 2. The depocentres were mainly due west. Mixed red and black soils occur in parts of the BolangirSambalpurand Sundargarh districts of Orissa.


The basin underwent an easterly tilt and the depocentres shifted due east prior to marine transgression during the beginning of Tertiary. Red soils occupy large areas in the basin.

Article Tools Print this article. Sawkar endowment cauvert Teachers training V. Cretaceous sediments crop out in the coastal region and consist of conglomeratic sandstone, coralline limestone, and shale. Suryaprakash Rao Endowment Lecture K. Geology of the Basin.

The Charnockites are confined to the Nilgiri Range in the central part of the drainage basin. Cauvery basin experiences tropical climate. Initial sedimentation was under non-marine environment.

The principal soil types found in the basin are black soils, red soils, lateritesalluvial soils, forest soils, and mixed soils. The eastern side of the basin gets most of the rain during the northeast monsoon.

Cauvery then enters the Mysore district where important tributaries joining the river from the left are the Harangithe Hemavathithe Shimsha and the Arkavathi. The results show that at many places, the quality of water was quite poor compared to what was the desired class.

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