Download PDF by B.K. Chakrabarti: Geology of the Himalayan Belt. Deformation, Metamorphism,
By B.K. Chakrabarti
Geology of the Himalayan Belt: Deformation, Metamorphism, Stratigraphy presents refined metamorphic and igneous rock facts throughout numerous Himalayan geographic sectors, taking pictures their petrography, metamorphism, constitution, mineralization, and neighborhood tectonic research.
With an east-west extension of approximately 3000 kilometers and various 8000 meter peaks, the Himalayas are the main superb mountain levels in the world. because the nineteenth century, they've got supplied a trying out flooring of world significance for the improvement of geodynamic ideas, from isostasy over continental collision, to extra lately, suggestions mechanisms among tectonics and climate.
This publication collects the extensive diversity of knowledge that’s been collected at the Himalayas over the last 50 years, delivering a complete research and interpretation at the on hand info that brings the medical neighborhood a greater knowing of the geological variety and constitution of the Himalayan belt, in addition to new strategies that experience purposes in a number of worldwide geological settings.
- Features an enormous quantity of geological study facts accumulated within the Himalayas over the last part century
- Authored through a famous international professional at the geology of the Himalayan belt
- Presents research and interpretation concepts to assist scientists in undertaking fieldwork and research
- Provides the newest details on geodynamic ideas, 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
The Po Formation contains a thick sequence of white to gray and mediumgrained quartz arenite, siltstone, sandstone, and shale with rare cherty partings. The basal part of the formation contains plant fossils Rhacopteris ovata and Sphenopteridium furcillatum. The middle part of the sequence is rich in Bryozoa Fenestella sp. The arenite in the upper part is current bedded and 46 CHAPTER 4 Himachal Himalaya contains Dialasma. The intercalated black shale contains nodules enclosing Orthoceras, Nautilus, Protoretipora ampla, Spirigera, Reticularia lineata, Productus lineatus, and crinoid fragments.
This sequence is considered to be of Cretaceous–Eocene age. 1 Paleocene–Eocene In the parautochthonous Lesser Himalayan belt, Rajpur Formation represents Paleocene–Eocene period and is composed of foraminiferal limestone at the base and variegated shale in the upper part. , and corals (hexacorals), indicating a Paleocene or Eocene age. In the outer Himalayan belt, Jangalgali Formation is unconformably overlain by Subathu Formation of Paleocene–Eocene age. The basal part of Subathu Formation contains khaki shale with ferruginous or phosphatic nodules, carbonaceous shale with lenses of coal, and nummulitic limestone.
The Shaliyana Formation contains a sequence of earthy siltsone, chert, carbonaceous shale, minor limestone, and phosphorite. The Sankholi Formation is composed of alternating gray to olive-green fine to medium-grained arenaceous and argillaceous beds. Koti Dhaman Formation is characterized by medium to coarse quartz arenite, arkosic sandstone, and limestone. , and ichnofossils are reported from the sequence. In the Higher Himalayan domains of Spiti and Kinnaur (Bhargava and Bassi, 1998), the Cambrian rocks are represented by Kunzum La Formation of the Haimanta Group.
Geology of the Himalayan Belt. Deformation, Metamorphism, Stratigraphy by B.K. Chakrabarti