Where is gneiss found in India?

Gneiss is formed because of the metamorphosis of the igneous rocks. The Bundelkhand gneiss is the oldest one. The rocks of the Archaean system are found mainly in Karnataka, Tamil Nadu, Andhra Pradesh, Madhya Pradesh, Orissa, Chotanagpur plateau in Jharkhand and the southern-eastern part of Rajasthan.

What is Bengal gneiss?

This is a coarsegrained biotite gneiss with an average granodioritic composition, that is generally fairly homogeneous but locally shows ‘gneissic’ banding, and is intruded by veins of microgranite and pegmatite.

Which city will you find the oldest exposed rock mass also known as the Peninsular Gneiss?

the city of Bangalore
One of the amazing things about the city of Bangalore is that it sits on a natural wonder… the rock that the city sits on is one of the oldest exposed rocks in the world. This wonder of Nature, called Peninsular Gneiss, is so easy to see.

What type of rock is found in southern India?

The major rock types are Gneisses, metamorphosed rocks mainly found in the areas of Gobichettipalayam and Bhavani Sagar. These Gneisses are worked for production of ornamental and dimension stones. The rock types are Garnet Sillimanite Gneiss, Quartzite, Calc-Granulite, Crystalline Limestones.

What are peninsular rocks?

Peninsular Gneiss is a term coined to highlight the older gneissic complex of the metamorphics found all over the Indian Peninsula. This term was first fashioned by W.F. Smeeth of the Mysore Geological Department in 1916 based on the first scientific study of this rock exposure. It is also called the Lalbagh rock.

Who is known as father of stratigraphy?

The man credited as the “father of stratigraphy,” however, was the English engineer and geologist William Smith (1769-1839). In 1815 Smith produced the first modern geologic map, showing rock strata in England and Wales.

How does sandstone become gneiss?

Gneiss can be formed from a sedimentary rock such as sandstone or shale, or it can be formed from the metamorphism of the igneouse rock grantite. Gneiss can be used by man as paving and building stone. Non-Foliates are metamorphic rocks that have no cleavage at all.

What is the composition of peninsular?

the peninsular plateau is composed of old crystalline, igneous and metamorphic rocks. it was formed due to the breaking and drifting of gondwanaland and the making the part of oldest landmass.

What is Gondwana rocks?

Gondwana rock system The Gondwana rocks are mainly found in Ranigunj, Jharia regions of Jharkhand, Damodar valley, Pench valley in Chhattisgarh and Madhya Pradesh, Godavari valley in Telangana and the Rajmahal hills of West Bengal. They are divided into two main series of rocks viz., Damuda and Panchet.

What kind of rock is gneiss?

metamorphic rock
gneiss, metamorphic rock that has a distinct banding, which is apparent in hand specimen or on a microscopic scale. Gneiss usually is distinguished from schist by its foliation and schistosity; gneiss displays a well-developed foliation and a poorly developed schistosity and cleavage.

What is Archean gneiss and schist?

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 of India.

What did Nicolas Steno discover?

Steno was the first to realize that the Earth’s crust contains a chronological history of geologic events and that the history may be deciphered by careful study of the strata and fossils. He rejected the idea that mountains grow like trees, proposing instead that they are formed by alterations of the Earth’s crust.

https://www.youtube.com/watch?v=2CBJik9Lqxw