The Island group include the Lakshadweep Islands and the Andaman and Nicobar Islands.
Exercises
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are young fold mountains formed comparatively recently in the history of the
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The Andaman and Nicobar Islands, a union territory of India, are a group of 572 islands of which 37 are inhabited at the juncture of the Bay of Bengal and the Andaman Sea.[5] The territory is about 150 km (93 mi) north of Aceh in Indonesia and separated from Thailand and Myanmar by the Andaman Sea. It comprises two island groups, the Andaman Islands (partly) and the Nicobar Islands, separated by the 150 km wide Ten Degree Channel (on the 10°N parallel), with the Andaman islands to the north of this latitude, and the Nicobar islands to the south (or by 179 km). The Andaman Sea lies to the east and the Bay of Bengal to the west. The territory's capital is the city of Port Blair. The total land area of this islands is approximately 8,249 km2 (3,185 sq mi). The territory is divided into three districts: the Nicobar District with Car Nicobar as its capital, the South Andaman district with Port Blair as its capital and the North and Middle Andaman district with Mayabunder as its capital. Lakshadweep is a group of islands in the Lakshadweep Sea, 200 to 440 km (120 to 270 mi) off the southwestern coast of India. The archipelago is administered as a union territory and district of India. They were also known as the Laccadive Islands, although geographically this is only the name of the central subgroup of the group. Lakshadweep means "one hundred thousand islands" in Sanskrit, Marathi and Malayalam.[3] The islands form the smallest Union Territory of India and their total surface area is just 32 km2 (12 sq mi). The lagoon area covers about 4,200 km2 (1,600 sq mi), the territorial waters area 20,000 km2 (7,700 sq mi) and the exclusive economic zone area 400,000 km2 (150,000 sq mi). The region forms a single Indian district with 10 subdivisions. Kavaratti serves as the capital of the Union Territory and the region comes under the jurisdiction of Kerala High Court. The islands are the northernmost of the Lakshadweep-Maldives-Chagos group of islands, which are the tops of a vast undersea mountain range, the Chagos-Lakshadweep Ridge.[4] As the islands have no aboriginal inhabitants, scholars have suggested different histories for the settlement of these islands. Archaeological evidence supports the existence of human settlement in the region around 1500 BCE. The islands have long been known to sailors, as indicated by an anonymous reference from the first century CE to the region in Periplus of the Erythraean Sea. The islands were also mentioned in the Buddhist Jataka stories of the sixth century BCE. Islam was established in the region when Muslims arrived around the seventh century. During the medieval period, the region was ruled by the Chola dynasty and Kingdom of Cannanore. The Catholic Portuguese arrived around 1498 but were expelled by 1545. The region was then ruled by the Muslim house of Arakkal, followed by Tipu Sultan. On his death in 1799, most of the region passed on to the British and with their departure, the Union Territory was formed in 1956.
Himalayas as young fold mountains
Himalayas are called young fold mountains due to the following reasons
They are formed only a few million years ago.
Fold mountains are formed when two or more of Earth’s tectonic plates are pushed together.
At this point of collision, the compressing boundaries, rocks and debris are warped and folded into rocky outcrops, hills, mountains, and entire mountain ranges.
These mountains were formed because of the folding of the earth’s crust due to tectonic activity (fold mountains are formed when two tectonic plates collide with one another).
Formed by the collision of the Eurasian plates and the Indo-Australian plates due to Continental Drift.
Features of these mountains
Himalayan Region is the shape of an arc.
Himalayan Region is composed of sedimentary rocks.
In the Himalayan Region, the average height of Mountain peaks is around 6000 metres.
It is the northernmost and continuous range.
It is covered with snow and comprise of snow glaciers.
By nature it is symmetrical and comprises of granite.