Thursday, 16 November 2023

Millions of years ago - The Beginning


"It is possible that most civilizations have such intervals, when the links between society and polity get shattered, or vitiated; they remain in a state of hibernation. It may be that for several centuries, we have been passing through such a phase, and that a time will soon come when India's polity will begin to reflect not only the aspirations and urges of our society, but also its manner and idiom." 

                -  Dharampal - Historian and Thinker



The Hills are alive... 

Most hillocks dotting the landscape in Coromandel Coast are solid rocks that have come into existence over 2000 million years ago.

Igneous Rocks are product of consolidation of earth’s Magmas, the molten silicates which underlie the solid crust of the earth.

Some of the underlying magma - mass, that tries to come to the surface through the crust, get stopped. 

In the standard geological time – scale, Archaean ( or Azoic ) rock period is approximately of the duration of about 3000 million years.  There are generally no fossils as no life forms existed during this phase.

 Gneisses, Charnockites ,Cretaccous Rocks occur in the Eastern Coast of South India.

The emerald hills of the region remain surprisingly a refreshing green throughout the year, even in the scorching summers!

 It is because the vegetation native to this region, have evolved, to absorb moisture from the air and remain green!!



 

The Gondwana Sequence

It is interesting to note that millions of years ago, that Australia, South America, Southern part of Africa, Madagascar, India and Antarctica were all united to form one continuous stretch of land known as Gondwana Land.

The solid rocks had then acquired, a thick sedimentary column that have characteristics of having been formed under a shallow stretch of water in river and lake basins.  They constitute the Gondwana group.

These rocks occur near Chennai, Tiruchirapalli and Ramanathapuram.

Ref - Botanical Survey GOI publication Vol  I 1996 

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