Himalaya: Geological Aspects, Volume 1Contributed articles. |
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Page 69
The tholeiitic and high alumina tholeiitic metavolcanics and metagabbros from
Kohistan region are also considered to represent the metamorphosed oceanic
crust and the island arc igneous rocks ( Jan , 1980 ; Bard et al . , 1980 ) .
The tholeiitic and high alumina tholeiitic metavolcanics and metagabbros from
Kohistan region are also considered to represent the metamorphosed oceanic
crust and the island arc igneous rocks ( Jan , 1980 ; Bard et al . , 1980 ) .
Page 71
the mode of subduction are interrelated and therefore the Marina - type
subduction characterised by extensional backarc stress have less massive island
arc with abundant basaltic volcanic pile overlying the oceanic basement crust .
the mode of subduction are interrelated and therefore the Marina - type
subduction characterised by extensional backarc stress have less massive island
arc with abundant basaltic volcanic pile overlying the oceanic basement crust .
Page 139
The Panjal Volcanics , Gangamopteris Beds and the Zewan Beds are indicative
of the pulses of the Hercynian time orogeny , and also of the Island - arc - type
conditions prevalent in the northwestern Himalaya . Frank ( 1968 ) observed that
...
The Panjal Volcanics , Gangamopteris Beds and the Zewan Beds are indicative
of the pulses of the Hercynian time orogeny , and also of the Island - arc - type
conditions prevalent in the northwestern Himalaya . Frank ( 1968 ) observed that
...
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Contents
Tectonics and Structure of the Pamirs | 1 |
Peninsular and Himalayan Precambrian Belts | 31 |
Central Indian Ridge and Himalayan Mountain System | 55 |
Copyright | |
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Common terms and phrases
active Asia associated base basement basic basin beds belt biotite blocks Boundary Central collision complex consists continental continuous Cretaceous crust crystalline deformation deposits direction early earthquakes east eastern Eocene et al evolution extension facies faults Figure folds followed formation formed Gansser Garhwal Geol Geology gneiss grade granite Group Higher Himalaya Indian Indian plate indicate Indus initial island Jour Kashmir Ladakh Late Lesser levels limestone Lower magmatic major margin metamorphism Middle mountain movement nappe nature Nepal northern observed occur oceanic ophiolite origin orogenic Pakistan palaeomagnetic Palaeozoic Pande phase plate possible Precambrian present Range region represent rocks rotation sampled sandstones schists sedimentary sediments seismicity sequence Shield similar southern structural studies subduction suggested suture Table tectonic Tertiary Tethyan thickness thrust Tibetan trend units Upper valley volcanics western zone