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

R. Suresh ¹

Affiliations
1 Atomic Minerals Division, Calcutta, IN

Abstract

Evidence of life from Dharwar greenstone belts has been reported by previous workers. Biologic origin of these forms, however, has been doubted. Filamentous bodies described from the Dodguni cherts have been considered to be mineralogic artifacts, The present study adduces fresh evidences gathered from examination of thin sections under scanning electron microscope, microchemical tests, and organic geochemical studies, in support of biogenic origin of these microfossils.

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R. Suresh ¹

Affiliations
1 University of Maryland, College Park, Maryland 20742, US

Abstract

The Archean Chitradurga schist belt (>2600 m.y.) is ideal for the investigation of morphological and chemical remnants of early life because of the presence of distinct sedimentary units. Available data so far, has not indicated the presence of undoubted microfossils from the Chitradurga belt. Possible microfossils from the Dodguni area are the only reliable evidences of early life from the Chitradurga schist belt.

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R. Suresh ¹

Affiliations
1 Science Applications International Corporation, 400 Virginia Avenue, S.W., Suite 810 Washington, DC 20024, US

Abstract

The Earth Observing System (EOS) is the centerpiece of a comprehensive global change research program planned by the National Aeronautics and Space Administration (NASA) in the late 90s. As a part of this program, NASA is launching two series of polar platforms EOS A beginning 1997, and EOS B in 1999. The objective of this program is to make synergistic measurements of key environmental parameters of the Earth from a variety of sensors over a period of 15-25 years in order to understand and predict environmental changes.

Keywords

Earth Observing System, Nasa, Environment.

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