Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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The Cambrian Age of Magnesites from E. Nepal as Determined through the Discovery of Paleo Basidiospores


Affiliations
1 Laboratoire de Geologie structurale, Universite des Sciences et Techniques du Languedoc, place E. Bataillon, 34060 Montpellier Cedex, France
2 Departement de Geologie dynamique, Universite Pierre et Marie Curie, 4 place Jussieu, 75230 Paris Cedex 05, France
3 Laboratoire De Micropaleontologie, Ecole Pratique Des Hautes Etudes, Institut De Paleontologie, 8 Rue Buffon, 75005 Paris, France
     

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The discovery of micro-organisms in a sparry magnesite, within carbonate rocks underlying the Main Central Thrust (M.C.T.) is related. The structural background of this part of the Lesser Himalayas is briefly described. First a mineralogical study of fossiliferous magnesite, then a description of the organisms found are given. A preliminary interpretation is proposed; the organisms are determined as paleobasidiospores, the age of which converge to the late Proterozoic and early Cambrian times. This datation is of great value for the structural interpretation of the area which had not the support of any paleontological arguments before.
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  • The Cambrian Age of Magnesites from E. Nepal as Determined through the Discovery of Paleo Basidiospores

Abstract Views: 199  |  PDF Views: 4

Authors

M. Brunel
Laboratoire de Geologie structurale, Universite des Sciences et Techniques du Languedoc, place E. Bataillon, 34060 Montpellier Cedex, France
M. Chaye D'Albissin
Departement de Geologie dynamique, Universite Pierre et Marie Curie, 4 place Jussieu, 75230 Paris Cedex 05, France
M. Locquin
Laboratoire De Micropaleontologie, Ecole Pratique Des Hautes Etudes, Institut De Paleontologie, 8 Rue Buffon, 75005 Paris, France

Abstract


The discovery of micro-organisms in a sparry magnesite, within carbonate rocks underlying the Main Central Thrust (M.C.T.) is related. The structural background of this part of the Lesser Himalayas is briefly described. First a mineralogical study of fossiliferous magnesite, then a description of the organisms found are given. A preliminary interpretation is proposed; the organisms are determined as paleobasidiospores, the age of which converge to the late Proterozoic and early Cambrian times. This datation is of great value for the structural interpretation of the area which had not the support of any paleontological arguments before.