Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Petrology of the Rocks of St. Mary Islands, Near Malpe, South Kanara District, Mysore State


Affiliations
1 Department of Geology, Karnatak University, Dharwar, India
     

   Subscribe/Renew Journal


The rocks of St. Mary Islands consist of dacite, rhyodacite and granophyre, showing close similarity in texture, mineralogy and petrochemistry, to similar rocks described from the islands of Salsette and Bassein, near Bombay. Based on the petrological study, it is surmised that the rocks of these islands are genetically connected with the Deccan Trap igneous activity. The study suggests a wider Deccan Trap igneous activity extending to several hundred kilometres south of the now known outcrops of trap. It also hints the association of a rhyolite magma with Deccan Trap igneous activity.
Subscription Login to verify subscription
User
Notifications
Font Size

Abstract Views: 214

PDF Views: 2




  • Petrology of the Rocks of St. Mary Islands, Near Malpe, South Kanara District, Mysore State

Abstract Views: 214  |  PDF Views: 2

Authors

C. Naganna
Department of Geology, Karnatak University, Dharwar, India

Abstract


The rocks of St. Mary Islands consist of dacite, rhyodacite and granophyre, showing close similarity in texture, mineralogy and petrochemistry, to similar rocks described from the islands of Salsette and Bassein, near Bombay. Based on the petrological study, it is surmised that the rocks of these islands are genetically connected with the Deccan Trap igneous activity. The study suggests a wider Deccan Trap igneous activity extending to several hundred kilometres south of the now known outcrops of trap. It also hints the association of a rhyolite magma with Deccan Trap igneous activity.