Open Access
Subscription Access
Open Access
Subscription Access
Geochemistry and Rb-Sr Chronology of Upper Jurassic A-type Granite, Tangmarg region, Kashmir Himalaya
Subscribe/Renew Journal
The present paper deals with petrochemistry and geochronology of granite pluton that intrudes the Agglomerate Slate-Panjal Trap sequence in Tangmarg region of Baramulla district, Kashmir Himalaya. This granite body henceforth called 'Tangmarg Granite' contains biotite, amphibole and rare pyroxene as mafic minerals and shows higher abundances of Zr, Nb, Ga, Y and REE, and lower AI, Mg and Ca contents. The geochemical signatures suggest the granite to be chemically distiIict from most of the orogenic granites (M-, I- and S-types) and points to their Anorogenic nature.
The six point whole rock Rb-Sr isochron of the Tangmarg granite gives an age of 161 ± 5 Ma, with Sr ratio of 0.714. The small size of the pluton points to limited melt generated from a partial fusion 'event' of short duration. Such a melt is attributed to pressure release due to reactivation of the faults that were formed during Permo-Triassicrifting event.
Keywords
Geochemistry, Geochronology, Granites, Kashmir Himalaya
Subscription
Login to verify subscription
User
Font Size
Information
Abstract Views: 178
PDF Views: 2