<<–2/”>a >img class=”size-medium wp-image-177 alignleft” src=”http://www.rasfreenotes.in/wp-content/uploads/2015/10/raj-geology-242×300.jpg” alt=”raj geology” width=”242″ height=”300″ />Geologically Rajasthan comprises rocks from oldest Archean rocks to recent alluvium formations .
The oldest formations are known as Banded Gneissic Complex exposed in central and southern Rajasthan.
The Aravalli hill range dividing the State diagonally is made up of precambrian rocks of Aravalli and Delhi Super group comprising the metamorphosed gneisses, schists, marble, quartzite, calc silicate, ultra basic, acidic and basic intrusive rocks. This is known as Delhi fold belt and is an important horizon for base metals, other metallic and non-metallic Minerals.
The eastern and southeastern parts of the State are occupied by rocks of Vindhyan Super group mainly forming a plateau of sandstone, shale’s and limestone.
In the southern part Deccan trap formation of cretaceous age are exposed.
In west :-
- near jodhpur there are reserves of sandstone
- near jalore-siwana there are reserves of granite
- malani there are reserves of rayolite
in north
- dholpur and karoli- red sanstone
- Jaisalmer – steel grade lime stone
The Aravalli metallogenic province of Rajasthan is the most important geological province for base Metal and gold deposits. The province contains the world class Rampura-Agucha Lead-Zinc deposit along with several large deposits of Lead and Zinc in Rajpura-Dariba and Zawar belts. In addition, there are a number of deposits in Deri-Basantgarh belt. Since the last decade, several gold deposits have been proved in the southern part of the province in Banswara district.
Mineral Potentiality: The State is geologically so endowed that it become a veritable repository of minerals. Rajasthan is fortunate enough to have a wide spectrum of mineral deposits. There are about 58 different kind of major and minor minerals produced in the State, contributing an annual revenue of more than 3088 crores and more than 5953 crores from petroleum.
Rajasthan is the sole producer of garnet (gem variety), jasper and wollastonite.
Almost entire production of zinc (concentrate), calcite, asbestos and gypsum in the country was reported from Rajasthan. Besides,
Rajasthan is the leading producer of ball clay (70%), feldspar (36%), fluorite (graded) (59%), Kaolin (44%), lead concentrate (89%), ochre (90%), phosphorite (90%), silver (81%), steatite (76%), barytes (32%), copper (32%), quartzite (33%) and silica sand (21%).,
The geological structure of Rajasthan is complex and varied, reflecting the state’s long and eventful Geological history. The oldest rocks in Rajasthan are Precambrian in age, and are found in the Aravalli Range. These rocks were formed during the Proterozoic Era, and are composed of gneisses, granites, and Metamorphic Rocks. The Aravalli Range is a mountain range that runs through the eastern part of Rajasthan. It is the oldest mountain range in India, and is thought to have formed about 2.5 billion years ago.
The younger rocks in Rajasthan are Mesozoic and Cenozoic in age, and are found in the Thar Desert. These rocks were formed during the Mesozoic Era, and are composed of sandstones, shales, and limestones. The Thar Desert is a large desert that covers the northwestern part of Rajasthan. It is the largest desert in India, and is thought to have formed about 50 million years ago.
The geological structure of Rajasthan has had a significant impact on the state’s landscape. The Aravalli Range is a major physical feature of Rajasthan, and has played an important role in the state’s history and culture. The Thar Desert is a harsh and unforgiving Environment, but it is also home to a unique and diverse ecosystem.
The geological structure of Rajasthan is also a valuable resource. The state is home to large deposits of minerals, including coal, iron Ore, and bauxite. These minerals are essential to the state’s economy, and are used in a variety of industries.
The geological structure of Rajasthan is a complex and fascinating subject. It is a product of the state’s long and eventful geological history, and has had a significant impact on the state’s landscape, history, and culture. The geological structure of Rajasthan is also a valuable resource, and is home to large deposits of minerals.
The Aravalli Range is a mountain range that runs through the eastern part of Rajasthan. It is the oldest mountain range in India, and is thought to have formed about 2.5 billion years ago. The Aravalli Range is composed of Precambrian rocks, which are the oldest rocks in India. The rocks in the Aravalli Range are metamorphic rocks, which means that they have been changed by heat and pressure. The Aravalli Range is a major physical feature of Rajasthan, and has played an important role in the state’s history and culture. The Aravalli Range is a popular tourist destination, and is home to a number of historical and cultural sites.
The Thar Desert is a large desert that covers the northwestern part of Rajasthan. It is the largest desert in India, and is thought to have formed about 50 million years ago. The Thar Desert is composed of Mesozoic and Cenozoic rocks, which are the younger rocks in India. The rocks in the Thar Desert are Sedimentary Rocks, which means that they were formed from the accumulation of sediment. The Thar Desert is a harsh and unforgiving environment, but it is also home to a unique and diverse ecosystem. The Thar Desert is home to a number of Plants and animals that are adapted to the desert environment.
The geological structure of Rajasthan is a valuable resource. The state is home to large deposits of minerals, including coal, iron ore, and bauxite. These minerals are essential to the state’s economy, and are used in a variety of industries. The coal in Rajasthan is used to generate electricity, and the iron ore is used to make steel. The bauxite is used to make aluminum. The geological structure of Rajasthan is also a valuable resource for tourism. The Aravalli Range is a popular tourist destination, and the Thar Desert is home to a number of historical and cultural sites.
Here are some frequently asked questions about the geological structure of Rajasthan, along with short answers:
- What is the geological structure of Rajasthan?
The geological structure of Rajasthan is complex and varied. The state is home to a number of different geological provinces, including the Aravalli Mountains, the Thar Desert, and the Kachchh Basin.
- What are the main features of the geological structure of Rajasthan?
The main features of the geological structure of Rajasthan include the Aravalli Mountains, the Thar Desert, and the Kachchh Basin. The Aravalli Mountains are a mountain range that runs through the eastern part of the state. The Thar Desert is a large desert that covers the northwestern part of the state. The Kachchh Basin is a large basin that is located in the northwestern part of the state.
- What are the implications of the geological structure of Rajasthan for the state’s economy?
The geological structure of Rajasthan has a number of implications for the state’s economy. The Aravalli Mountains are a source of minerals, including iron ore, copper, and bauxite. The Thar Desert is a source of oil and gas. The Kachchh Basin is a source of salt and gypsum.
- What are some of the challenges associated with the geological structure of Rajasthan?
Some of the challenges associated with the geological structure of Rajasthan include the risk of Earthquakes, the risk of landslides, and the risk of drought.
- What are some of the opportunities associated with the geological structure of Rajasthan?
Some of the opportunities associated with the geological structure of Rajasthan include the development of mineral Resources, the development of oil and gas resources, and the development of tourism.
- What are some of the research needs associated with the geological structure of Rajasthan?
Some of the research needs associated with the geological structure of Rajasthan include the need to better understand the risk of earthquakes, the need to better understand the risk of landslides, and the need to better understand the risk of drought.
- The oldest rocks in Rajasthan are found in the Aravalli Range. True or False?
- The Aravalli Range is a fold mountain range. True or False?
- The Thar Desert is located in the northwestern part of Rajasthan. True or False?
- The Thar Desert is the largest desert in India. True or False?
- The Climate-of-rajasthan/”>Climate of Rajasthan is arid. True or False?
- The Average annual rainfall in Rajasthan is less than 200 mm. True or False?
- The main source of water in Rajasthan is groundwater. True or False?
- The Indira Gandhi Canal is a major Irrigation canal in Rajasthan. True or False?
- The main crops grown in Rajasthan are wheat, rice, and Cotton. True or False?
- Rajasthan is a major producer of minerals, including coal, iron ore, and limestone. True or False?
Answers:
1. True
2. True
3. True
4. False (The Thar Desert is the second largest desert in India, after the Great Indian Desert.)
5. True
6. True
7. True
8. True
9. True
10. True