Geology Chapter 2: Geological Evolution and Structure

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What is the primary focus of historical geology?

Study of the earth's crust

Formation of rocks during eras

Patterns of development of the earth's crust in time and space (correct)

Study of the earth's atmosphere

What is the name given to rocks formed during an era?

Period

Era

System

Group (correct)

How old is the Pre-Cambrian era?

Between 400-570 million years old

Over 570 million years old (correct)

Between 245-570 million years old

Over 400 million years old

What is the name of the Indian geological era that is 400-570 million years old?

Dravidian Signup and view all the answers

Why are the Pre-Cambrian rocks named so?

Because they are named after Cambria, the Latin name for Wales Signup and view all the answers

What type of fossils are found in the Cenozoic era?

Recent life forms Signup and view all the answers

What is the process of plain formation that is still continuing?

Deposition of sediment by rivers Signup and view all the answers

What is the study of folds and faults including igneous activities associated with their formation?

Geological structure Signup and view all the answers

What is the characteristic of the Himalayan Mountains?

A young mountain of soft rocks Signup and view all the answers

What is the study of the formation and development of surface features of land?

Physiography Signup and view all the answers

What is the characteristic of the Peninsular Plateau?

An old landmass of hard rocks Signup and view all the answers

What is the lithological study of rock beds, sequence of their occurrences and their thickness and age?

Stratigraphy Signup and view all the answers

What is the geological term for the process of mountain building?

Orogenic Signup and view all the answers

What is the name of the plate that the Peninsular Plateau is a part of?

Indo-Australian Plate Signup and view all the answers

What is the name of the sea that existed in the Himalayan area till the Mesozoic era?

Tethys Sea Signup and view all the answers

What is the characteristic of the river valleys in the Peninsular Plateau?

Shallow with low gradients Signup and view all the answers

What is the name of the plateau that is surrounded by sea on three sides?

Peninsular Plateau Signup and view all the answers

What is the shape of the Himalayan mountain system?

Arc-shaped Signup and view all the answers

What is the term used to describe the geological structure of the Peninsular Plateau?

Horst Signup and view all the answers

Which of the following rock systems contains the first formed rocks of the earth?

Archean System Signup and view all the answers

What is the characteristic of the rivers in the Himalayas?

Torrential Signup and view all the answers

What is the main type of rocks found in the Peninsular Plateau?

Igneous Signup and view all the answers

Which of the following groups corresponds to the first half of the Pre-Cambrian era?

Archean Signup and view all the answers

What is the shape of the Peninsular Plateau?

Triangular Signup and view all the answers

What type of rocks are formed due to intensive volcanic activity in Maharashtra and other parts of the Deccan?

Deccan Traps Signup and view all the answers

During which period did the peninsula experience crustal movements leading to the formation of basin shaped depressions?

Upper Carboniferous Period Signup and view all the answers

Where are the Dravidian rocks found in continuous sequence?

In the Himalayas Signup and view all the answers

What type of rocks contain coal deposits and show marks of climatic changes?

Gondwana Rocks Signup and view all the answers

Where are the Gondwana Rocks mainly found?

In the Damodar, Mahanadi and Godavari valleys Signup and view all the answers

What type of rocks are found in the northern part of the central Himalayan axis?

Palaeozoic Rocks Signup and view all the answers