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Jain, R. L.
- Avian Eggshells from the Lower Miocene Rocks of Eastern Kutch, Gujarat
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Authors
Affiliations
1 Geological Survey of India, Ahmedabad 380009, IN
1 Geological Survey of India, Ahmedabad 380009, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 35, No 1 (1990), Pagination: 106-113Abstract
Eggshell fragments were collected from three spots a few metres apart from the Lower Miocene rocks of Eastern Kutch, Gujarat. The crystalline structure of the shells, the slender closely packed columns and horizontal layering suggest that these are of avian type and may belong to Ratites (?).Keywords
Palaeontology, Vertebrate, Kutch, Gujarat, Avian Eggshells.
- Record of Middle Jurassic (Bathonian) Ammonite Genus Clydoniceras BLAKE from Jaisalmer Basin, Western Rajasthan
Abstract Views :194 |
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Authors
Affiliations
1 Geological Survey of India, Western Region, Jaipur, IN
1 Geological Survey of India, Western Region, Jaipur, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 1 (2007), Pagination: 53-56Abstract
A single specimen of Middle Jurassic (Bathonian) Ammonite Genus Clydoniceras BLAKE has been collected from the sandy limestone of the base of Bada Bag Member of jaisalmer Formation of Charu area of jaisalmer District, Western Rajasthan. This specimen is described and figured in the present text to update the stratigraphy of rocks of pre-Kuldhar Member of the jaisalmer Formation.Keywords
Mesozoic (Bathonian), Ammonite, Clydoniceras, Shell Anatomy, Jaisalmer Formation, Rajasthan.- Some Critical Field Observations on the Genesis and Stratigraphical Status of Pokaran Boulder Bed, Western Rajasthan
Abstract Views :195 |
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Authors
Affiliations
1 57, Clay Square, Lucknow - 226 001, IN
2 Geological Survey of India, Palaeontology Division, Jaipur - 302 004, IN
1 57, Clay Square, Lucknow - 226 001, IN
2 Geological Survey of India, Palaeontology Division, Jaipur - 302 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 3 (2005), Pagination: 301-308Abstract
Based on the present detailed field observations on the physiographic setting and the lithological nature of the Pokran Boulder Bed (PBB), the authors conclude that it is a consolidated sedimentary bed, apparently in the nature of a glacial drift and not a tillite (like Talchir Formation of Gondwana Supergroup). The denuded upper surface of bouldery hummocks of the PBB on the ground invariably shows presence of loose boulders. The consolidated horizons lie buried within the hummocks, wherever thicker horizons of PBB are still preserved. The weathered top of the PBB, forming rolling, hummocky topography is reminiscent of continental glaciated areas. It is likely that the PBB represents remnant of the Well-Known global Precambrian (Vendian) Ice Age. It rests directly over the rhyolitic (Malani Rhyolite) basement.The field observations also lead to the conclusion that the thick succession of sandstones of the Jodhpur Group (sometimes referred as 'Jodhpur sandstone') of Marwar Supergroup (MSG) only occasionally overlie the PBB and always with a marked unconformity, such as at Gaphur Khan ki Dhani and elsewhere. Clearly the PBB does not form part of the stratigraphy of Marwar Supergroup.
Keywords
Pokaran Boulder Bed, Genesis, Stratigraphical Status, Marwar Supergroup, Rajasthan.- Critical Field Observations on the Genesis and Stratigraphical Status of Pokaran Boulder Bed, Western Rajasthan
Abstract Views :201 |
PDF Views:140
Authors
Affiliations
1 Office of the Dean, New Campus, Jai Narain Vyas University, Jodhpur - 342 00 1, IN
2 57, Clay Square, Lucknow - 226 001, IN
1 Office of the Dean, New Campus, Jai Narain Vyas University, Jodhpur - 342 00 1, IN
2 57, Clay Square, Lucknow - 226 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 3 (2005), Pagination: 373-376Abstract
No Abstract.Full Text
- Note on the Present Stratigraphic Status of Khichan Conglomerate, Jodhpur District, Rajasthan
Abstract Views :170 |
PDF Views:145
Authors
Affiliations
1 Geological Survey of India, Jhalanadungari, Jaipur -302 004, IN
1 Geological Survey of India, Jhalanadungari, Jaipur -302 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 6 (2001), Pagination: 543-544Abstract
Recent geological mapping has shown that Khichan Conglomerate marks the hiatus between the Nagaur Formation of Marwar Supergroup (Eocambrian ?) and the Permo-Carboniferous Badhaura Formation in Rajasthan.Full Text
- Geological Nature of the Pokaran Boulder Bed: Palaeoenvironmental, Palaeoclimatic and Stratigraphic Implications
Abstract Views :188 |
PDF Views:225
Authors
Affiliations
1 Palaeontology Division, Geological Survey of India,W.R., 15- 16, Jhalana Instt. Area, Jaipur-302 004, IN
2 Jai Narain Vyas University, Jodhpur, IN
1 Palaeontology Division, Geological Survey of India,W.R., 15- 16, Jhalana Instt. Area, Jaipur-302 004, IN
2 Jai Narain Vyas University, Jodhpur, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 60, No 3 (2002), Pagination: 353-355Abstract
No Abstract.Full Text