Marine magnetic anomalies off Ratnagiri, western continental shelf of India

Author(s): Gopala Rao, D.
Author Affiliation(s): Primary:
Natl. Inst. Oceanogr., Dona Paula, Goa, India
Volume Title: Marine Geology
Source: Marine Geology, 61(1), p.103-110. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0025-3227 CODEN: MAGEA6
Note: In English. Letter
Summary: Results suggest that the anomalies occur over a magnetic crystalline basement at a depth of 1-1.2 km which is similar (in magnetization) to onshore basalts of Northwest India. These anomalies are believed to be an expression of a considerable thickness (around 1.7 km) of basalt, underlain by sediments. Identification of these basalts in offshore areas along the northwestern continental shelf of India would support (1) the idea that the onshore Deccan basalts of western India and the rhyolitic tuffs at the Laccadive ridge system (DSDP Site 210) are related to the same volcanic events, and (2) subsequently downfaulting of onshore Deccan basalts into the Arabian Sea and submergence below the Tertiary sediments.—Modified journal abstract.
Year of Publication: 1984
Research Program: DSDP Deep Sea Drilling Project
Key Words: 07 Marine Geology and Oceanography; Arabian Sea; Asia; Basalts; Basement; Bathymetry; Continental shelf; Crust; Deccan Traps; Geophysical methods; Geophysical surveys; Igneous rocks; India; Indian Ocean; Indian Peninsula; Magnetic anomalies; Magnetic methods; Maharashtra India; Oceanography; Ratnagiri; Rhyolitic tuff; Surveys; Volcanic rocks
Coordinates: N160000 N180000 E0730000 E0710000
Record ID: 1984050854
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.