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Balakrishnan, S.
- Chennai Flood of 1-5 December 2015: an Extreme Climatic Event?
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Authors
Affiliations
1 Department of Earth Sciences, Pondicherry University, Puducherry 605 014, IN
1 Department of Earth Sciences, Pondicherry University, Puducherry 605 014, IN
Source
Current Science, Vol 110, No 1 (2016), Pagination: 9-10Abstract
No Abstract.Full Text
- Incidence of Gold Associated with Copper Mineralization in Garhwal Lesser Himalaya, Rudraprayag District, Uttarakhand, India
Abstract Views :268 |
PDF Views:82
Authors
Affiliations
1 Geological Survey of India, Lucknow 226 024, IN
2 Geological Survey of India, Dehradun 248 001, IN
3 Geological Survey of India, Chennai 600 032, IN
4 Geological Survey of India, Jaipur 302 004, IN
1 Geological Survey of India, Lucknow 226 024, IN
2 Geological Survey of India, Dehradun 248 001, IN
3 Geological Survey of India, Chennai 600 032, IN
4 Geological Survey of India, Jaipur 302 004, IN
Source
Current Science, Vol 112, No 06 (2017), Pagination: 1115-1117Abstract
Base-metal mineralization occurs widely in the rocks of the Garhwal Group of Proterozoic Lesser Himalayan Sequence, viz. Dhanpur, Pokhri and Mohankhal prospects, but gold (Au) associated with such mineralization is rarely recorded from Garhwal Himalaya. Here we report significant incidences of gold associated with sulphide mineralization in dolomitehosted quartz-carbonate veins of Pithoragarh (=Lameri) Formation from Lameri-Koteshwar area, in parts of Rudraprayag district, Uttarakhand, India.Full Text
References
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- 10Be/9Be Ratios of Cauvery River Delta Sediments, Southern India:Implications for Palaeo-Denudation Rates in the Catchment and Variation in Summer Monsoon Rainfall During Late Quaternary
Abstract Views :199 |
PDF Views:80
Authors
Soumya Prakash Dhal
1,
S. Balakrishnan
2,
Pankaj Kumar
3,
Pramod Singh
2,
Alok Sharan
1,
Sundeep Chopra
3
Affiliations
1 Department of Physics, Pondicherry University, Puducherry 605 014, IN
2 Department of Earth Sciences, Pondicherry University, Puducherry 605 014, IN
3 Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110 067, IN
1 Department of Physics, Pondicherry University, Puducherry 605 014, IN
2 Department of Earth Sciences, Pondicherry University, Puducherry 605 014, IN
3 Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110 067, IN
Source
Current Science, Vol 115, No 9 (2018), Pagination: 1770-1781Abstract
Present and past denudation rates (D) of the Cauvery river catchment determined using meteoric 10Be/9Be on drill-core sediment samples from Uttarangudi and Valangaiman sites in the delta vary from 18.7 ± 1.6 to 48.1 ± 8.3 t/km2/a. The present day denudation rates of 37.7 ± 4.9 t/km2/a and 36.9 ± 5.2 t/km2/a estimated for these sites are higher by a factor of two than that based on solute and suspended load of the Cauvery river. Denudation rates estimated using 10Be/9Be (reactive) is more accurate as it is not affected by damming of rivers. Based on 9Be fraction (reactive + dissolved) and previous studies, we infer that sediments for Valangaiman site were mainly sourced from Western Ghats and Mysore plateau, whereas highlands bordering southwestern margin of the delta mostly supplied sediments to the Uttarangudi site. The Western Ghats and the delta received rainfall mainly during summer monsoon and NE monsoon respectively. Comparison of palaeo-denudation rates with various proxies of the Indian summer monsoon shows inverse relationship between them. Lower denudation rates are estimated for Early to Mid-Holocene period which is characterized by intense rainfall. Drier conditions after 4.5 ka BP caused increase in denudation rates after 2.5 ka BP for the Valangaiman core, consistent with a response time of 2 ka required to change 10Be/9Be in sediments of the Cauvery basin.Keywords
Cauvery Delta, Denudation Rate, Holocene, Meteoric 10Be/9Be, Sediment Cores, Summer Monsoon.Full Text
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- Make Indian Universities as Centres of Research and Innovation
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Authors
Affiliations
1 Department of Earth Sciences, Pondicherry University, Puducherry 605 008, IN
1 Department of Earth Sciences, Pondicherry University, Puducherry 605 008, IN
Source
Current Science, Vol 117, No 7 (2019), Pagination: 1123-1124Abstract
A university is much more than an institution that grants degrees and diplomas. It is a part of the society where creation of knowledge, incubation of new ideas, innovations and critical thinking are to be nurtured. High quality universities provide right environment where transformation of students to great scientists, engineers, social thinkers and administrators take place. Innovations that result in new processes and products are often made in laboratories of universities in most of the developed countries, thus helping industries to gain an edge over their competition. In a nutshell, progress of a society can be gauged from the robustness of universities which transform the youth into future leaders, researchers and teachers.Full Text