By B.K. Chakrabarti
Geology of the Himalayan Belt: Deformation, Metamorphism, Stratigraphy presents subtle metamorphic and igneous rock info throughout a variety of Himalayan geographic sectors, shooting their petrography, metamorphism, constitution, mineralization, and nearby tectonic research.
With an east-west extension of approximately 3000 kilometers and various 8000 meter peaks, the Himalayas are the main stunning mountain levels in the world. because the nineteenth century, they've got supplied a trying out floor of world value for the advance of geodynamic options, from isostasy over continental collision, to extra lately, suggestions mechanisms among tectonics and climate.
This publication collects the huge diversity of knowledge that’s been collected at the Himalayas during the last 50 years, offering a entire research and interpretation at the on hand information that brings the medical group a greater realizing of the geological variety and constitution of the Himalayan belt, in addition to new innovations that experience purposes in a bunch of worldwide geological settings.
- Features an unlimited volume of geological study facts amassed within the Himalayas during the last part century
- Authored through a well-known worldwide specialist at the geology of the Himalayan belt
- Presents research and interpretation options to assist scientists in engaging in fieldwork and research
- Provides the newest details on geodynamic recommendations, from isostasy over continental collision, to extra lately, suggestions mechanisms among tectonics and climate
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Additional info for Geology of the Himalayan Belt. Deformation, Metamorphism, Stratigraphy
Giumal Formation is assigned an age from Berriasian to uppermost Aptian. Its deposition took place under a shallow part on the slope of a platform as proximal turbidite. The Chikkim Formation exposed in the Spiti Basin is over 125-m thick. The basal 75 m is greyish-blue to white limestone, while the upper part is mainly gray calcareous shale. It was deposited in shelf edge basinal environment. , etc. The sedimentation history closed in the Spiti–Kinnaur basinal sector after Cretaceous and the Lesser Himalayan sector became the site of deposition.
GSI, op. , p. 17 for details). The upper Murree Formation is an areno-argillaceous assemblage containing sandstone, shale, gritty sandstone, and conglomerate. The sandstone horizons contain fossilized tree trunks and plant leaves. Mio–Pliocene rocks are represented in Indus Suture Zone by Liyan Formation, which unconformably overlies the Sangeluma Group and the upper part of the Indus Group. Liyan Formation consists of conglomerate and gritty sandstone and contains palm leaves (in shale) and vertebrate fossils.
It contains vertebrate fossils like Bramapithecus sivalensis Lewis, Dryopithecus punjabicus Pilgrim, Ramapithecus brevirostris Lewis, Sivapithecus sivalensis Lydekker, and Sugrivapithecus salmontanus Lewis. , and Giraffokeryx sp. The Middle Siwalik is a 2000-m thick sequence of sandstone with gravel and clay beds. 2 Regional Correlation of the Metamorphics 49 Sugrivapithecus, Crocuta, Conophyus, Rhizomys, Felis, Sus, Tragulus, Vishnutherium, and Tragoceras (Misc. pub. GSI, op. ). Before the deposition of the Upper Siwalik Formation, the sedimentaries were uplifted and eroded and sedimentation of the Upper Siwaliks started on the eroded surface of the Middle Siwalik Formation.