Extensional tectonics Totally Explained

Everything about Extensional Tectonics totally explained

Extensional tectonics is concerned with the structures formed, and the tectonic processes associated with, the stretching of the crust or lithosphere. Areas of extensional tectonics are typically associated with:

The development of continental rifts, with or without the effects of mantle upwelling
The gravitational spreading of zones of thickened crust formed during continent-continent collision
Tensional flexures along strike-slip faults
On passive margins where an effective basal detachment layer is present at the upper end of a linked system

Extensional structures

The main structures formed in areas of extensional tectonics are normal faults and graben structures. Prominent examples include:

The East African Rift, a major continental rift system

The Basin and Range province of western North America

The global mid-ocean ridge system

The Dead Sea basin formed at a releasing bend along a continental transform boundary

Further Information

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