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What is triple junction in plate tectonics?

What is triple junction in plate tectonics?

Triple junctions are points on the Earth’s surface where the margins of three different plates meet. There are three types of plate margins: (1) ridges (R); (2) trenches, or Himalaya type (formed by the collision of two continents), (T); and (3) transform faults (F).

What is triple tectonic zone?

Geological Divisions of India: Geologically, India is divided into 3 major regions (also called the Triple Tectonic division): The Peninsular Plateau region – It also includes the Shillong Plateau and the Kutchch Kathiawar region (Outliers) The Extra-peninsular region – the mountainous region of Himalayas.

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Why is it that all transform triple junction is impossible to occur?

Not all of the 27 possible combinations occur at present, and some of those are geometrically impossible because the motions that are required cannot be sustained, such as an F-F-F boundary. Not all geometries are stable, and in most cases the triple junction will migrate with respect to at least some of the plates.

Why are triple junctions significant?

A triple junction is ideally a point at which boundaries of three lithospheric plates come together. At such a point, geological processes belonging to one plate boundary abruptly give place to others belonging to the other two boundaries.

Which 3 plates meet at this triple junction?

The Azores Triple Junction is a geologic triple junction where the boundaries of three tectonic plates intersect: the North American Plate, the Eurasian Plate and the African Plate, R-R-R.

What is a triple junction quizlet?

A triple junction is a place on Earths surface where. The boundaries 100\% of three lithospheric plates meet at the single point. Within the sea floor, the rate of heat flow is greatest. Along the mid-ocean ridges.

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How does triple junction occur?

In plate tectonics theory during the breakup of a continent, three divergent boundaries form, radiating out from a central point (the triple junction). One of these divergent plate boundaries fails (see aulacogen) and the other two continue spreading to form an ocean.

What is a triple junction in Africa?

The point in the Afar region where the boundaries of all three plates meet is called a Triple Junction. In time, as Nubian and Somalian plates move further away from each other, the area between them will grow thinner and drop below sea level.

Does the Mendocino triple junction show low or high rates of seismic activity?

The triple junction region is characterized by a high level of seismicity that includes thrust, normal, and strike-slip earthquakes, with one thrust event as large as Ms = 7.1 having occurred within the last decade, as well as numerous other thrust and strike-slip events greater than magnitude 6 [e.g., McPherson, 1989; …

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Is there a triple junction on the west coast of the US?

The Mendocino Triple Junction (MTJ) is the point where the Gorda plate, the North American plate, and the Pacific plate meet, in the Pacific Ocean near Cape Mendocino in northern California.

How the process of plate tectonics circulates materials between the asthenosphere and the lithosphere?

how the process of plate tectonics circulates materials between the asthenosphere and the lithosphere. Some asthenosphere becomes lithosphere at mid-ocean spreading centers and reenters the asthenosphere at subduction zones. How is magma created in a subduction zone?