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Bhatt, D. K.
- Record of Marine Microfauna Younger than Palaeogene from Rajasthan
Abstract Views :179 |
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Authors
Affiliations
1 Geological Survey of India, Jaipur 302 004, IN
1 Geological Survey of India, Jaipur 302 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 56, No 4 (2000), Pagination: 453-458Abstract
The data contained in this paper pertain to the record of microfauna that indicates the presence of sediments of Miocene-Quaternary age in western Rajasthan. The recovered microfauna consist mainly of foraminifera and ostracoda. The dwarf nature of microfauna indicates stressed palaeoenvironment.Keywords
Forminifera, Ostracoda, Neogene-Quaternary, Rajasthan.
- Neospathodus Praekummeli-A New Species of Conodont from Lower Triassic of Spiti
Abstract Views :192 |
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Authors
Affiliations
1 Geological Survey of India, 84B, Nirala Nagar, Lucknow 226007, IN
1 Geological Survey of India, 84B, Nirala Nagar, Lucknow 226007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 22, No 9 (1981), Pagination: 444-447Abstract
The paper describes a new species of the conodont form-genus Neospathodus Mosher, under the specific name N. praekummeli sp. nov. The presently recorded new species has a close morphologic and biostratigraphic relation with the well-known Dienerian guide-species N. kummeli Sweet.
In the Lower Triassic sequence of Spiti the first appearance of N. praekummeli sp. nov. marks the base of Ophiceras bed. It is likely that N. kummeli Sweet has evolved from N. praekummeli sp. nov. near the base of Ophiceras bed.
- Comment
Abstract Views :181 |
PDF Views:135
Authors
Affiliations
1 Geological Survey of India, Luck now 226006, IN
1 Geological Survey of India, Luck now 226006, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 26, No 4 (1985), Pagination: 290-291Abstract
No Abstract.Full Text
- Otoceras Bed of Himalaya and Permian-Triassic Boundary-Assessment and Elucidation With Conodont Data
Abstract Views :279 |
PDF Views:4
Authors
D. K. Bhatt
1,
R. K. Arora
1
Affiliations
1 Palaeontology Division, Geological Survey of India, Calcutta 700016, IN
1 Palaeontology Division, Geological Survey of India, Calcutta 700016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 25, No 11 (1984), Pagination: 720-727Abstract
The history of research on the chronostratigraphic status of Otoceros fauna of Himalaya has been traced and the brachiopod, pelecypod and ammonoid biostratigraphy of the classical Otoceras bed of Himalayan sections has been critically reviewed. It is observed that the impact of over-all change in the palaeobiological communities, in the sense of change from Palaeozoic to Mesozoic, is better discernible at the base of Ophiceras bed. This megafaunal observation is supported from the vertical distribution of conodonts. This calls for revision of the traditional view of placing the Permian-Triassic boundary at the base of Otocerus bed.- Discovery of Redlichid Trilobites from the Arenaceous Member of the Tal Formation, Garhwal Syncline, Lesser Himalaya, India
Abstract Views :169 |
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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 33, No 6 (1989), Pagination: 538-546Abstract
The paper records the first find of identifiable redlichid trilobites, belonging to two genera, from the strata of the Arenaceous Member of the Tal Formation in the Garhwal Syncline. This fossil horizon in the Garhwal Syncline, in the past, has also yielded small shelly fossils. The chronostratigraphic designation of this small shelly fauna in the Qiongzhusian (? Atdabanian) Stage of China now stands corrected with the present discovery. The trilobite genera correspond to the Botomian Stage (1 Tsanglangpuian Stage of China), in the Early Cambrian.- Comment 1: Ediacaran Medusoids from the Krol Formation, Naini Tal Syncline, Lesser Himalaya
Abstract Views :193 |
PDF Views:175
Authors
Affiliations
1 Geol. Surv. India, Lucknow 2, IN
1 Geol. Surv. India, Lucknow 2, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 36, No 5 (1990), Pagination: 536-540Abstract
No Abstract.Full Text
- Fossil Report from Semri Group, Lower Vindhyan
Abstract Views :200 |
PDF Views:159
Authors
Affiliations
1 Geological Survey of India, Jaipur 320004, IN
2 Geological Survey of India, Lucknow 226024, IN
3 Geological Survey of India, Jabalpur 482003, IN
4 Geological Survey of India, Hyderabad 500068, IN
5 Geological Survey of India, Calcutta 700016, IN
1 Geological Survey of India, Jaipur 320004, IN
2 Geological Survey of India, Lucknow 226024, IN
3 Geological Survey of India, Jabalpur 482003, IN
4 Geological Survey of India, Hyderabad 500068, IN
5 Geological Survey of India, Calcutta 700016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 53, No 6 (1999), Pagination: 717-723Abstract
No Abstract.Full Text
- Conodont Biostratigraphy of the Lower Triassic in Spiti Himalaya, India
Abstract Views :230 |
PDF Views:4
Authors
Affiliations
1 Geological Survey of India, Jaipur - 302 004 & Lucknow - 226 024, IN
1 Geological Survey of India, Jaipur - 302 004 & Lucknow - 226 024, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 54, No 2 (1999), Pagination: 153-167Abstract
Early Triassic sequence of about 30 m thickness is exposed at Lalung (Lilang) in Spiti, Himachal Pradesh. The sequence, traditionally defined by the Otocerus bed at the base and the Keyserlingites bed at the top, is biostratigraphically defined in this paper by eight successive conodont zones, which in the ascending order are: Neogondolella orientalis - N. subcarinata Assemblage Zone, Neospathodus kummeli Zone, Neospathodus dieneri Zone, Neospathodus cristugalli Zone, Neospathodus pakistanensis-Neogondolella nepalensis Assemblage Zone, Neospathodus waageni Zone, Neogondolella elongata Zone and Neospathodus timorensis Zone. These conodont zones are delineated on the basis of data from Lalung, Mud (Muth), Guling (Kuling) and Spiti River sections in the Spiti valley.Keywords
Palaeontology, Conodont Zones, Lower Triassic, Spiti, Himachal Pradesh.- Some Critical Field Observations on the Genesis and Stratigraphical Status of Pokaran Boulder Bed, Western Rajasthan
Abstract Views :195 |
PDF Views:2
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
- Record of Marine Microfauna Younger than Palaeogene from Rajasthan
Abstract Views :191 |
PDF Views:127
Authors
Affiliations
1 Centre of Advanced Study in Geology, Dr. H.S. Gour University, Sagar - 470 003, IN
1 Centre of Advanced Study in Geology, Dr. H.S. Gour University, Sagar - 470 003, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 57, No 4 (2001), Pagination: 378-379Abstract
No Abstract.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