Spacial analysis of Lithology and forest in Doddahalla watershed, Chikmagalur district, Vedavati river sub-basin, Karnataka, India

B R Mohan

doi:10.53989/bu.ge.v8i1.2

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Geo-Eye

DOI: 10.53989/bu.ge.v8i1.2

Year: 2019, Volume: 8, Issue: 1, Pages: 5-7

Original Article

Spacial analysis of Lithology and forest in Doddahalla watershed, Chikmagalur district, Vedavati river sub-basin, Karnataka, India

B R Mohan¹

¹ Research Scholar, Department of Geology, Jnana Bharati Campus, Bangalore University, Bangalore, 560056

Received Date:28 February 2019, Accepted Date:16 May 2019

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

The Lithology are a significant geographical component of this watershed and are from the stratigraphy of topographical opportunity scale goes under Archean to Lower Proterozoic. The various kinds of geography in the investigation region which incorporates Basal Polymict Conglomerate, Granite(Shimoga), Meta basalt and Tuff Migmatites And Granodiorite - Tonalitic Gneiss, Quartz Chlorite Schist With Orthoquartzite and Ultra Mafic Schist. In the investigation zone, Migmatites And Granodiorite - Tonalitic Gneiss are predominant (453.4 km), Quartz Chlorite Schist With Orthoquartzite happened (89.9 sq km), Granite (Shimoga) (46.9 sq km), Ultra Mafic Schist is (2.1 sq km), Basal Polymict Conglomerate and Metabasalt and Tuff (0.9 sq km). By land use land cover information increment in agriculture ranch 12 to 27 %, forest 5 to 6 % and scrub 1 to 11 % all information from 1991 to 2018.

Keywords: Granite (Shimoga), Lithology, Land Use Land Cover and Forest

References

Mahabaleswar B, Jayananda M, Peucat JJ, Swamy NS. Shadakshara Swamy Archaean high-grade gneiss complex from Satnur-Halagur-Sivasamudram area, Karanataka, Southern India: petrogenesis and crustal evolution. Journal of the Geological Society of India. 1995;45:33–49.
Late Archaean, K-rich granitoids, consisting of N–S elongate bodies, among which the Closepet granite is the most spectacular. Several of these granites have been dated in the range 2.5–2.6 Ga .
Jayananda M, Moyen JF, Martin H, Peucat JJ, Auvray B, Mahabaleswar B. Late Archaean (2550–2520 Ma) juvenile magmatism in the Eastern Dharwar craton, southern India: constraints from geochronology, Nd–Sr isotopes and whole rock geochemistry. Precambrian Research. 2000;99(3-4):225–254. doi: 10.1016/s301-9268(99)00063-7
FSI. State of forest report 2011. Forest survey of India, Ministry of environment and forests, government of India, Dehradun. 2011.
Ellison D, Futter MN, Bishop K. On the forest cover–water yield debate: from demand‐ to supply‐side thinking. Global Change Biology. 2012;18(3):806–820. Available from: https://dx.doi.org/10.1111/j.1365-2486.2011.02589.x
Drury NB, Harris RW, Holt GJ. Wightman Precambrian tectonics and crustal evolution in South. India Journal of Geology. 1984;92:3–20.
FSI. The manual of instructions for field inventory 2002. Forest Survey of India, Ministry of Environment and Forests, Government of India, Dehradun. 2002.
Jayananda M, BM. Relationships between shear zones and igneous activity: the Closepet granite of Southern India . Proceedings of the Indian Academy of Sciences. 1991;100:31–36.

Copyright

© 2019 Mohan. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Published By Bangalore University, Bengaluru, Karnataka