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Bose, Utpal
- Fusiform Structures in Sullavai Sandstone-Biogenic or Abiogenic?
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PDF Views:108
Authors
Affiliations
1 Geological Survey of India, D-87, Meera Marg, Jaipur 6, IN
1 Geological Survey of India, D-87, Meera Marg, Jaipur 6, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 18, No 7 (1977), Pagination: 347-348Abstract
No Abstract.- The Occurrence of Trace Fossils in the Delhi Supergroup of Northeastern Rajasthan
Abstract Views :189 |
PDF Views:132
Authors
S. P. Singh
1,
Utpal Bose
2
Affiliations
1 23, Commerce College, Professors' Colony, Chitragupta Nagar, Patna 800020, IN
2 B-16 (A), Chomu House, Jaipur 302001, IN
1 23, Commerce College, Professors' Colony, Chitragupta Nagar, Patna 800020, IN
2 B-16 (A), Chomu House, Jaipur 302001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 26, No 6 (1985), Pagination: 422-425Abstract
Trace fossils of trail markings and burrows are reported from the Alwar and Ajabgarh metasediments of the Proterozoic Delhi Supergroup from several localities of northeastern Rajasthan.- Delhi Volcanics in Parts of Central Rajasthan and their Significance
Abstract Views :180 |
PDF Views:2
Authors
Affiliations
1 Geological Survey of India, IN
1 Geological Survey of India, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 31, No 3 (1988), Pagination: 314-327Abstract
The Proterozoic Delhi Supergroup of rocks along the Aravalli orographic axis in central Rajasthan encloses thick linear piles of syn-sedimentary volcanics. The volcanies are low-potassic oceanic tholeiites derived from mantle source. The repository basin was ensialic to start with and was partially rifted to facilitate magma upwelling concomitant with sedimentation. Structural stratigraphic and chemical characters of the volcanics militate against the possibility of its being allochthonous slices of an oceanic crust.- Polymodal Volcanism in Parts of the South Delhi Fold Belt, Rajasthan
Abstract Views :196 |
PDF Views:2
Authors
Affiliations
1 Geological Survey of India, Regional Geology Division II (Operation: Rajasthan), Jhalana Dungri, Jaipur 302 004, IN
1 Geological Survey of India, Regional Geology Division II (Operation: Rajasthan), Jhalana Dungri, Jaipur 302 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 36, No 3 (1990), Pagination: 263-276Abstract
The Proterozoic South Delhi Fold Belt (SDFB) is known to have a dominant volcanic component along the western flank of the Aravalli Range. Earlier studies have indicated both bimodal and unimodal characters of these volcanics in different parts of the SDFB. The Shyopura-Narpura area in north-central part of the Aravalli Range has, on the other hand, volcanics of intermediate and ultrabasic composition, interlayered with basic and felsic volcanics. This polymodal suite of secondary greenstone character is interpreted to have erupted in a rifted back-arc setting.Keywords
Geochemistry, Delhi Fold Belt, Volcanism, Rajasthan.- The Volcano-Sedimentary Association of the Precambrian Hindoli Supracrustals in Southeast Rajasthan
Abstract Views :198 |
PDF Views:1
Authors
Utpal Bose
1,
A. K. Sharma
1
Affiliations
1 Regional Geology Division II, Operation: Rajasthan, Geological Survey of India, Jhalana Dungri, Jaipur 302004, IN
1 Regional Geology Division II, Operation: Rajasthan, Geological Survey of India, Jhalana Dungri, Jaipur 302004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 40, No 4 (1992), Pagination: 359-369Abstract
An arcuate belt of Precambrian vo1cano-sedimentaries, designated as the Hindoli Group, is sandwiched between the cratonic Archaean Banded Gneissic Complex terrain and the platformal Vindhyan sediments. Turbidites of mainly quartz wacke and petites with interlayered lava flows and tuffs of basalt, basaltic andesite and daciterhyodacite composition constitute the bulk of the Hindoli vo1cano~sedimentaries. These are interpreted to have been deposited in a continent-marginal basin with active participation of an arc system. Toward the end of the basin evolutioo; the continent-margin acted passively when quartzarenite and carbonates were deposited in a stable shelf regime.Keywords
Hindoli Group, Precambrian, Turbidites, Continent-Marginal Basin, Rajasthan.- Event Stratigraphy and Physico-Chemical Characters of Banded Gneissic Complex and Associated Supracrustals in the South Mewar Plains of Rajasthan
Abstract Views :164 |
PDF Views:1
Authors
Utpal Bose
1,
A. K. Mathur
1,
K. C. Sahoo
2,
S. Bhattacharya
1,
Krishan Dutt
1,
V. Aneel Kumar
3,
S. S. Sarkar
1,
S. Chowdhury
1,
I. Chowdhury
1
Affiliations
1 Geological Survey of India, Jhalana Dungri, Jaipur - 302 004, IN
2 Geological Survey of India, Bhubaneswar - 751 012, IN
3 Geological Survey of India, Hyderabad - 500 660, IN
1 Geological Survey of India, Jhalana Dungri, Jaipur - 302 004, IN
2 Geological Survey of India, Bhubaneswar - 751 012, IN
3 Geological Survey of India, Hyderabad - 500 660, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 47, No 3 (1996), Pagination: 325-338Abstract
The oldest cratonic nucleus pf the Western Indian shield, familiarly known as the Banded Gneissic Complex (BGC), occupies a large tract in the Mcwar plains of South Rajasthan. It has essentially an old gneissic component (3.3 Ga) and a host of mafic bodies associated with detrital and chemogenic sediments which have been subjected to multiple phases of anatexis and granite intrusions (2.9 Ga and later events). The emplacement of Berach granite and succeeding dolerite dyke swarms mark the end-Archaean cratonization process. This also initiated intracratonic and cratonmarginal basin formation.Later magmatism, especially along the basement-cover interface. is due to local remobilisation of the basement at the time of Proterozoic orogeny.
Keywords
Banded Gneissic Complex, Stratigraphy, Petrochemistry, Rajasthan.- Occurrence of Felsic Volcanics in the Berach Granite Massif of Southeastern Rajasthan
Abstract Views :168 |
PDF Views:143
Authors
Affiliations
1 OSI, NH-5P, Faridabad-121001, IN
2 GSI, Jhalana Dungri, Jaipur-302004, IN
3 GSI, Bandlaguda, Hyderabad-500660, IN
4 Govt. of Rajasthan, Udaipur, IN
1 OSI, NH-5P, Faridabad-121001, IN
2 GSI, Jhalana Dungri, Jaipur-302004, IN
3 GSI, Bandlaguda, Hyderabad-500660, IN
4 Govt. of Rajasthan, Udaipur, IN