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Gururaja, M. N.
- Plant Fossils from the East Coast Gondwana Beds of Tamil Nadu with a Note on their Age
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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 18, No 8 (1977), Pagination: 398-400Abstract
A recent search for plant fossils from the East Coast Gondwana sediments of Tamil Nadu has revealed a number of new occurrences. They include Taeniopteris cf. lata, Sphenopteris sp., from the Terani beds from Terani, Tiruchirapally district and Pterophyllum sp., Ptilophyllum acutifolium, Cladophlebis indica, Gingkoites cf. rajmahalensis, Actinopteris sp., from the Sivaganga formations of Ramnad district.
The age of the East Coast Gondwana is reviewed in the light of the recent K-Ar dating of the Rajmahal traps assigning an Aptian age to the lower part of the Rajmahal traps. There is no contradiction in the ages assignable to the coastal Gondwana on the basis of plant and animal fossils.
- Stromatolitic Microbiota from Black Chert of Cumbum Formation, Upper Cuddapah, Andhra Pradesh
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Authors
Affiliations
1 No. 5-5-449, Mukkaram, Jahi Road, Hyderabad-500001, IN
1 No. 5-5-449, Mukkaram, Jahi Road, Hyderabad-500001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 20, No 3 (1979), Pagination: 138-142Abstract
An interesting assemblage of microbiota consisting of filamentous, coccoid and asteroid forms in a stromatolitic black chert sample from Cumbum Formation of Upper Cuddapah sequence, near Zangamarajupalle, Andhra Pradesh is recorded. The microbiota associated with the columnar stromatolite, is dominated by filamentous forms over the coccoids. All the morphotypes reported here from Cumbum Formation are known from the Gunflint chert of Canada dated to be about 1900 to 2000 m years.- On the Occurrence of Upper Gondwana Plant Beds near Chintalapudi, West Godavari District, Andhra Pradesh
Abstract Views :198 |
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Authors
Affiliations
1 Geological Survey ofIndia, Chandra Vihar, Hyderabad 500001, IN
1 Geological Survey ofIndia, Chandra Vihar, Hyderabad 500001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 34, No 1 (1989), Pagination: 93-98Abstract
Variegated clay-clast-bearing sandstones and purple claystones containing upper Gondwana plant fossils viz. Cladophlebis cf. denticulata, Ptilophyllum sp., Pterophyllum sp., Elatocladus conferta and Elatocladus cf. plana are recorded for the first time near Chintalapudi from the upper part of the 'Chintalapudi Sandstone' hitherto believed to be of lower Gondwana age. The present study has established that the newly identified upper Gondwana rock units belong to the Kota Formation overlying the 'Chintalapudi Sandstone' (= Karnthi Formation) with an unconformable contact.- Algal Genus Aethesolithon from Neogene of Little Andaman Island
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Authors
Affiliations
1 Department of Geology, University of Mysore, Mysore, IN
2 5-5-549, Mukkuramzahi Road Hyderabad, IN
1 Department of Geology, University of Mysore, Mysore, IN
2 5-5-549, Mukkuramzahi Road Hyderabad, IN