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Exposed gneiss hillock at Lal Bagh Geological Map of South India – The Dharwars of South India. The Archean gneisses and schists, which are the oldest rocks of the Indian Shield, constitute a considerable area of Peninsular India. The Dharwar (Super Group) and the Peninsular Gneissic Complex are the classified groups of the Precambrian rocks ...
Augen gneiss, from the German: Augen, meaning "eyes", is a gneiss resulting from metamorphism of granite, which contains characteristic elliptic or lenticular shear-bound grains (porphyroclasts), normally feldspar, surrounded by finer grained material. The finer grained material deforms around the more resistant feldspar grains to produce this ...
Khondalite at Rushikonda, Visakhapatnam, India Khondalite is a foliated metamorphic rock.In India, it is also called Bezwada Gneiss and Kailasa Gneiss. [1] It was named after the Khond tribe [2] [1] of Odisha and Andhra Pradesh because well-formed examples of the rock were found in the inhabited hills of these regions of eastern India.
The location map of the Dharwar Craton. The shaded area represents the Dharwar Craton. Generated from GeoMapApp (Ryan et al., 2009). [1]The Dharwar Craton is an Archean continental crust craton formed between 3.6-2.5 billion years ago (), which is located in southern India and considered the oldest part of the Indian peninsula.
[6] in British India, around 1,100 (80%) sites are located on the plains between the rivers Ganges and Indus. [3] The oldest-known site of the Indus Valley Civilization, Bhirrana , [ 7 ] and the largest site, Rakhigarhi , [ 8 ] are located in the Indian state of Haryana .
South India, also known as Southern India or Peninsular India, is the southern part of the Deccan Peninsula in India encompassing the states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu and Telangana as well as the union territories of Lakshadweep and Puducherry, occupying 19.31% of India's area (635,780 km 2 or 245,480 sq mi) and 20% of India's population.
[110] [111] Isanasivagurudeva paddhati is another text from the 9th century describing the art of building in India in south and central India. [ 110 ] [ 112 ] In north India, Brihat-samhita by Varāhamihira is the widely cited ancient Sanskrit manual from the 6th century describing the design and construction of Nagara -style Hindu temples.
A study of sodium-rich quartz-alkali feldspar—biotite gneiss granulite facies terrane in the Kerala Khondalite Belt near Manali in south India found that in situ leucosomes (light colored segregations) within the gneiss showed the development of garnet replacing the dark biotite. The study indicated localized melting or migmatization within ...