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Co-Authors
- Rajeev Bidwai
- S. Srinivasan
- L. K. Nanda
- Atanu Banerjee
- P. N. Bangroo
- P. S. Parihar
- U. P. Sharma
- S. Shukla
- P. K. Sinha
- R. K. Purohit
- A. Majumdar
- G. S. Yadav
- A. Muthamilselvan
- T. S. Shaji
- S. Tripathy
- S. C. Sahu
- A. Yugandhara Rao
- K. Vijay Raj
- O. P. Yadav
- U. K. Pandey
- S. L. Aravind
- P. K. Panchal
- A. S. Venkatesh
- P. R. Sahoo
- A. K. Chaturvedi
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Rai, A. K.
- Anomalous Silver Concentration in Volcano-Plutonic Rocks of Siwana Ring Complex, Barmer District, Western Rajasthan
Abstract Views :265 |
PDF Views:94
Authors
Rajeev Bidwai
1,
S. Srinivasan
1,
L. K. Nanda
1,
Atanu Banerjee
1,
P. N. Bangroo
1,
A. K. Rai
2,
P. S. Parihar
2
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur 302 030, IN
2 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
1 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur 302 030, IN
2 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
Source
Current Science, Vol 106, No 2 (2014), Pagination: 159-162Abstract
No Abstract.- Anomalous Silver Concentration in Volcano-Plutonic Rocks of Siwana Ring Complex, Barmer District, Western Rajasthan
Abstract Views :250 |
PDF Views:87
Authors
Rajeev Bidwai
,
S. Srinivasan
,
L. K. Nanda
,
Atanu Banerjee
,
P. N. Bangroo
,
A. K. Rai
,
P. S. Parihar
Source
Current Science, Vol 106, No 3 (2014), Pagination: 367-367Abstract
No Abstract.- Uranium Occurrence in Proterozoic Chilpi Group, near Kanhari, Kawardha District, Chhattisgarh
Abstract Views :234 |
PDF Views:78
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, AMD Complex, Civil Lines, Nagpur 440 013, IN
2 Atomic Minerals Directorate for Exploration and Research, AMD Complex, Begumpet, Hyderabad 500 016, IN
1 Atomic Minerals Directorate for Exploration and Research, AMD Complex, Civil Lines, Nagpur 440 013, IN
2 Atomic Minerals Directorate for Exploration and Research, AMD Complex, Begumpet, Hyderabad 500 016, IN
Source
Current Science, Vol 107, No 3 (2014), Pagination: 364-367Abstract
No Abstract.- Recognition of a New Albitite Zone in Northern Rajasthan:Its Implications on Uranium Mineralization
Abstract Views :272 |
PDF Views:132
Authors
Affiliations
1 Jamshedpur 831 002, IN
2 Center for Remote Sensing, Bharthidasan University, Tiruchirappalli 620 023, IN
3 Thiruvananthpuram 659 012, IN
4 Hyderabad 500 016, IN
1 Jamshedpur 831 002, IN
2 Center for Remote Sensing, Bharthidasan University, Tiruchirappalli 620 023, IN
3 Thiruvananthpuram 659 012, IN
4 Hyderabad 500 016, IN
Source
Current Science, Vol 108, No 11 (2015), Pagination: 1994-1998Abstract
No Abstract.- The May 21st, 2014 Bay of Bengal Earthquake: Implications for Intraplate Stress Regime
Abstract Views :220 |
PDF Views:115
Authors
Affiliations
1 School of Earth, Ocean and Climate Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 751 007, IN
2 India Meteorological Department, Bhubaneswar 751 020, IN
1 School of Earth, Ocean and Climate Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 751 007, IN
2 India Meteorological Department, Bhubaneswar 751 020, IN
Source
Current Science, Vol 108, No 9 (2015), Pagination: 1706-1712Abstract
The northeastern part of the Indian Ocean, i.e. the Bay of Bengal (BoB) is located near some of the most complicated tectonic zones on the Earth. An earthquake of magnitude ∼6.0 occurred on 21 May 2014 near the coast of Odisha. Occasional moderate to large earthquakes in BoB highlight the need to study precise hypocentre locations, and focal mechanisms to understand the cause of intraplate seismicity in BoB.It is also important for seismic hazard and tsunami risk evaluation along the eastern coast of India. We present an analysis of the digital data of this earthquake recorded by regional and global networks of seismic stations. Our analysis of travel-times of P- and S-waves indicates that the epicentre of the earthquake is located between the Eighty Five East and Ninety East ridges. The focus of this earthquake was at a depth of ∼61 km, well below the lower boundary of the oceanic crust. The focal mechanism determined by modelling long period P- and SH-waveforms suggest an strike-slip motion along a NW-SE or NEE-SWW-directed fault or fracture. We interpret that the upper part of the BoB lithosphere is abnormally strong and brittle.Keywords
Earthquake Location, Focal Mechanism, Intraplate Seismicity, Tectonic Zones.- Uranium-Bearing Magnesian-Calcrete in Surficial Environment from Khemasar, Churu District, Rajasthan, India
Abstract Views :209 |
PDF Views:88
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Vishakapatnam 530 007, IN
2 Atomic Minerals Directorate for Exploration and Research, Jaipur 302 033, IN
3 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
1 Atomic Minerals Directorate for Exploration and Research, Vishakapatnam 530 007, IN
2 Atomic Minerals Directorate for Exploration and Research, Jaipur 302 033, IN
3 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
Source
Current Science, Vol 108, No 8 (2015), Pagination: 1540-1544Abstract
Magnesium-bearing calcretes of soft-gritty and hard pan varieties containing uranium concentrations from 16 to 74 ppm with <10 ppm of thorium are located along the Saraswati palaeochannel at Khemasar village, Churu district, Rajasthan. The uraniumbearing calcretes are exposed over an areal extent of 300 m × 200 m with thickness of up to 2 m in an interdunal depression. The silty sand layer occurring below the calcrete horizon suggests that it is a valley-fill calcrete, deposited along a palaeochannel. This occurrence of uraniferous Mg-calcrete in the Saraswati river palaeochannel opens up a large area for uranium exploration in the calcrete environment of Thar Desert. These calcretes are composed of 15.94% to 25.39% CaO, 7.15% to 22.39% MgO and Sr/Ba ratio up to 66.98. There is a positive correlation of U with Sr/Ba and MgO. The high Sr/Ba ratio and MgO indicate water of saline nature and high rate of evaporation. Ephemeral centripetal drainage mixing with the dissected palaeochannel waters and groundwaters, under arid climatic conditions might have resulted in the formation of this kind of uranium-bearing calcrete in fluvio-lacustrine environment.Keywords
Fluvio-Lacustrine Environment, Khemasar, Magnesian Calcrete, Surficial Type Uranium.- U-Pb, Pb-Pb and Sm-Nd Ages of Davidite within Albitite Zone from Bichun, Jaipur District, Rajasthan, India:Possible Link between Uranium Mineralization and Grenvillian Orogeny
Abstract Views :215 |
PDF Views:82
Authors
G. S. Yadav
1,
U. K. Pandey
2,
S. L. Aravind
3,
P. K. Panchal
3,
A. S. Venkatesh
4,
P. R. Sahoo
4,
A. K. Chaturvedi
2,
A. K. Rai
2,
P. S. Parihar
2
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Jamshedpur 831 002, IN
2 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
3 Atomic Minerals Directorate for Exploration and Research, Jaipur 302 030, IN
4 Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, IN
1 Atomic Minerals Directorate for Exploration and Research, Jamshedpur 831 002, IN
2 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
3 Atomic Minerals Directorate for Exploration and Research, Jaipur 302 030, IN
4 Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, IN