Area Drilling

India Researchers at the University of Oklahoma are studying cores of Precambrian basement rocks from Bombay High oil and gas field to determine whether they may have been affected by meteorite impact. Dr. Sankar Chatterjee at Texas Tech University, in studying mass extinction at the Cretaceous-Tertiary boundary, mapped an apparent buried oblate feature 600 km long, 450 km wide, and 12 km deep carved through Deccan traps and into underlying Precambrian granite. If of impact origin, this Shiva crater would be the largest impact feature of Phanerozoic age, exceeding the Chic- xulub crater off Mexico's Yucatan Peninsula (OGJ, May 11, 1998, p. 69). Bombay High field, with...

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