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. The deltaic soil is found in the coastal plains of the Mahanadi.
Except in the Chhatisgarh and coastal plains, the basin has an extensive area under forests. The basin underwent an easterly tilt and the depocentres shifted due east prior to geolkgy transgression during the beginning of Tertiary.
Cauvery Basin: Geology
bsin Naqvi Gold Medal K. The first marine transgression occurred during the close of Late Jurassic. Black soil and sandy soil with ” Kankar ” are the main soils found in the part of basin lying in Chhattisgarh.
Sedimentation during the Tertiary period was marked by repeated transgressions and regressions as is evidenced by biofacies, isopachs, and several sedimentation breaks which are relatively more pronounced in the western if of the basin.
Initial sedimentation was under non-marine environment. The exposed and subsurface sedimentary sequence are adequately fossiliferous and several faunal as well as palynological zones are established. Mixed red and black soils occur in parts of bqsin BolangirSambalpurand Sundargarh districts of Orissa.
Future Challenges in Earth Email this article Login required. The shape of the basin is somewhat rectangular with a maximum length and breadth of km and km, respectively.
Email the author Login required. The highest rainfall in the basin is received cajvery the western border of the basin during the southwest monsoon.
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The delta area is the most fertile tract in the basin. Muthuswami Memorial Lecture C. Several studies were made by the Central Pollution Control Board to ascertain the status of water quality in the Cauvery River.
The depocentres were mainly due west.
Biostratigraphy and Evolution of the Cauvery Basin, India | Sastri | Geological Society of India
The north-east monsoon provides the greater portion of the annual precipitation. Forest and agriculture are the main stay of the people in the interior parts of the basin. Cauvery then enters the Mysore 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.
Cretaceous sediments crop out in the coastal region and consist of conglomeratic sandstone, coralline limestone, and gdology.
Wadia Endowment Lecture G. Caivery soil is found in the lower parts of Orissa.
Cauvery Basin: Geology
Gondwana System, Aligarh, India, Ann. Cauveryy Area Km 2. Over the main basin, the peninsular granites and gneisses comprising of biotite granitic gneiss, hornblende granitic gneiss are widely found. Water Potential of the Basin.
The total length of the river from source to its outfall into Bay of Bengal is about km. Total Drainage Area Km 2.
The Closepet Granite of the upper geologyy of the Cauvery basin is a pink granite consisting mainly of quartz, plagioclase, microcline, perthiteand subordinate hornblende. Geoloyy of the Basin. The important tributaries joining Cauvery in the Coorg district are the Kakkabethe Kadanur and the Kummahole. Marine environment of sedimentation continued till Cretaceous, although through a series of minor transgressions and regressions.
The eastern side of the basin gets most of the rain during the northeast monsoon. Krishnaraja sagar dam, NuguMettur and Grand Anicut projects. The Chhatisgarh and coastal plains, with a high incidence of rainfall, are predominantly rice growing areas.
Occasional flood problem in lower reaches and delta areas of Cauvery river. O 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.
Climate of Cauvery B asin. A major regression occurred during the close of Cretaceous. Subscription Login to verify subscription Purchased Articles.