What Is Sedimentary Basin

What do you mean by sedimentary basin?

1.1 The official definition of a sedimentary basin is: a low area in the Earth’s crust of tectonic origin in which sediments accumulate. … The essential element of the concept is tectonic creation of relief to provide both a source of sediment and a relatively low place for the deposition of that sediment.

How do you identify a sedimentary basin?

Basins are classified by their tectonic setting (divergent convergent transform intraplate) the proximity of the basin to the active plate margins and whether oceanic continental or transitional crust underlies the basin.

What is sedimentary basin in India?

India has 26 sedimentary basins covering an area of 3.14 million square kilometres. The sedimentary basins of India onland and offshore up to the 200m isobath have an areal extent of about 1.79 million sq. km.

What are the types of sedimentary basins?

Types of sedimentary basins
Rift-related basins
Basin type Geological Origin
Rift basin The down-dropped basin formed during rifting because of stretching and thinning of the continental crust
Passive margin basin Subsidence along a passive margin mostly due to long-term accumulation of sediments on the continental shelf

How sedimentary basin is formed?

Sedimentary basins are formed over hundreds of millions of years by the combined action of deposition of eroded material and precipitation of chemicals and organic debris within water environment (Figure 1.2).

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What the meaning of basins?

1 : a wide shallow usually round dish or bowl for holding liquids. 2 : the amount that a basin holds a basin of cold water. 3 : the land drained by a river and its branches. 4 : a partly enclosed area of water for anchoring ships.

Why are basins important?

Catchment basins are vital elements of the ecosystem in which soil plants animals and water are all interdependent. Basins are vital to human existence since they provide clean water for drinking water for growing food and water to nourish plant life which provides the oxygen people breathe.

What are the types of basins?

The major types of basins are river drainage basins structural basins and ocean basins. A river drainage basin is an area drained by a river and all of its tributaries. A river basin is made up of many different watersheds.

What is the largest sedimentary basin on earth?

The deepest basins (>15 km) are found in the southern Caspian Sea and in the western Gulf of Mexico. Sedimentary rocks are important because they are the “tape recorder” of past climate sea-level and environmental change. They are also the world’s largest repositories of oil and gas.

Where is Krishna-Godavari basin?

The Krishna Godavari Basin is a proven petroliferous basin of continental margin located on the east coast of India . Its onland part covers an area of 15000 sq. km and the offshore part covers an area of 25 000 sq.

Krishna Godavari Basin.
Source Rock Syn-rift Mesozoic sediments
Depositional Environment Continental (Fluvial to Laccustrine )

Which river is largest basin in India?

The Ganga basin

The Ganga basin is the largest. Narmada river is the fifth largest river and is also the largest west flowing river.
S.No. 1
Name of Basin Indus
S.No. 10
Name of Basin Brahmani and Baitarani

What are basins in India?

These 7 basins are namely Krishna-Godavari (KG) Mumbai Offshore Assam Shelf Rajasthan Cauvery Assam-Arakan Fold Belt and Cambay.

How many sedimentary basins are there in the world?

Sedimentary basins have been well documented for many years but their boundaries are often inadequately represented. This study delineated 764 basins using global geologic datasets to create more consistent basin outlines that can be utilized to conduct future global studies.

What are basins in geography?

basin in geology a broad shallow trough or syncline a structure in the bedrock not to be confused with a physiographic river basin although the two may coincide.

How many basin are there in Pakistan?

There are two sedimentary basins in Pakistan ie Indus in the east and Balochistan in the west. In addition two basins also exist in the offshore Indus offshore and Makran offshore. Indus basin is a large basin and the exploration activities in this area date back to pre-independence times.

Why is sedimentary basin important?

Known as sedimentary basins these features come in many shapes and sizes. … This basin fill is important in two respects. First it preserves unique information regarding the history of tectonic biologic oceanographic and atmospheric events during Earth’s evolution.

What are the three types of sedimentary environments?

A sedimentary or depositional environment is an area on Earth’s surface such as a lake or stream where large volumes of sediment accumulate. All environments of deposition belong to one of three settings: terrestrial coastal (or marginal marine) and marine.

What is the setting of sediment?

The sedimentary environment is the specific depositional setting of a particular sedimentary rock and is unique in terms of physical chemical and biological characteristics. The physical features of a sedimentary environment include water depth and the velocity and persistence of currents.

What is a basin give an example?

A basin is a depressed section of the earth’s crust surrounded by higher land. … The Tarim and Tsaidam Basins of Asia and the Chad Basin of north-central Africa are examples of the basin.

What is meant by drainage?

Drainage is the system or process by which water or other liquids are drained from a place. Line the pots with pebbles to ensure good drainage. The drainage system has collapsed because of too much rain. Synonyms: sewerage waste sewage More Synonyms of drainage.

What is Basin in English called?

A basin is a large or deep bowl that you use for holding liquids or for mixing or storing food. Place the eggs and sugar in a large basin. … a pudding basin. Synonyms: bowl dish vessel container More Synonyms of basin.

What is drainage and drainage basin?

drainage basin also called catchment area or (in North America) watershed area from which all precipitation flows to a single stream or set of streams. … The boundary between drainage basins is a drainage divide: all the precipitation on opposite sides of a drainage divide will flow into different drainage basins.

Why is Basin important to humans?

Drainage basins are often described as the area that contributes flow upstream of the mouth or confluence of a watercourse. … Because of this interconnection and linkages between upstream and downstream ecosystems drainage basins provide a useful unit for considering and managing most environmental systems.

Which river has the smallest basin in India?

Avari River

The Avari River the smallest or shortest river in India has the smallest river basin in the country.

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How many sedimentary basins are in Nigeria?

three sedimentary basins

The three sedimentary basins in Nigeria are underlain by continental crust except in the Niger delta where the basement rock is interpreted to be oceanic crust.

What is in the rock cycle?

The rock cycle is a basic concept in geology that describes transitions through geologic time among the three main rock types: sedimentary metamorphic and igneous. … The rock cycle explains how the three rock types are related to each other and how processes change from one type to another over time.

Why is sandstone a sedimentary rock?

Sandstone is a type of rock made from sediment — a sedimentary rock. The sediment particles are clasts or pieces of minerals and fragments of rock thus sandstone is a clastic sedimentary rock.

What is the difference between river basin and drainage basin?

The difference: (i)An area drained by a river and its tributaries is called a river basin. … An area drained by a river and its tributaries is called a drainage basin.

Where is KG-D6 block?

Krishna-Godavari basin
The KG-D6 block lies in the Krishna-Godavari basin of the Bay of Bengal on the eastern coast of India. The block is owned by three entities namely its operator Reliance Industries (Reliance) (66.6%) and BP (33.3%). It covers an area of 8 100km² and lies in water depths between 700m (2 297ft) and 1 700m (5 577ft).

Where is KG basin located?

Krishna Godavari (KG) Basin is spread across 50 000 sq km in the Krishna River and Godavari river basins near the coast of Andhra Pradesh. The site Dhirubhai-6 (D6) is where Reliance Industries discovered the biggest gas reserves in India.

What is an oil basin?

A depression in the crust of the Earth caused by plate tectonic activity and subsidence in which sediments accumulate. Sedimentary basins vary from bowl-shaped to elongated troughs. … Most basins contain some amount of shale thus providing opportunities for shale gas exploration and production.

Which river in India is called the Salt river?

The Luni

The Luni derived its name from the Sanskrit lavanavari (“salt river”) and is so called because of its excessive salinity. With a course of some 330 miles (530 km) the Luni is the only major river of the area and it serves as an essential source of irrigation waters.

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How many rivers are in India?

There are 8 major river systems in India with more than 400 rivers in total. Rivers play an important role in the lives of the Indian people due to their crucial importance in sustenance and their place in Indian religions.

Where is Amazon River?

The Amazon River is located in the northern portion of South America flowing from west to east. The river system originates in the Andes Mountains of Peru and travels through Ecuador Colombia Venezuela Bolivia and Brazil before emptying into the Atlantic Ocean.

Sedimentary Basins

Physical Geology Sedimentary Basins & Sea Level


Sedimentary basins

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