Mechanism of crustal extension in the Laxmi
Basin,Arabian Sea
Pandey Anju*,Pandey Dhananjai K
【摘 要】A B s T R A C T：Continental rifting and magmatism has been extensively studied worldwide as it is believed that continental rifting,break up of continents and associated magmatism lead to genesis of new oceanic crust.However,various regions of the world show that these processes may lead to genesis of other types of crust than the oceanic crust.Laxmi Basin in the western continental margin of the India is one such region with an enigmatic crust. Due to its extreme strategic significance for the palaeogeographic reconstruction of continents during Cretaceous continental breakup of India,this basin has attracted various workers for more than two decades.However,still the issue of nature of crust in the basin remains controversial.In this contribution,in order to identify nature of crust,mechanism of continental extension in the Laxmi Basin has been studied for the first time through newly acquired seismic data from the basin.Here,we propose a plausible mechanism of crustalextension in the Laxmi Basin which eventually constrains the nature of crust of the Laxmi Basin.We have demonstrated thatthe crust in the LaxmiBasin can be categorised in two zones of stretched and transitional crust.In the stretched zone several fault bounded horst and graben structures are identified which
Mechanism of crustal extension in the Laxmi Basin, Arabian Sea
