Diagram Sea Floor Spreading Rift Valley

The triple junction is the central point where three cracks boundaries split off at about 120 angles from each other. If on land it creates rift valleys. Examples of this type of rift include the mid atlantic ridge and.

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If sea floor spreading operates the youngest oceanic crust should be found at the ridges and progressively older crust should be found in moving away from the ridges towards the continents.

Diagram sea floor spreading rift valley. Seafloor spreading and rift valleys are common features at triple junctions triple junctions are the intersection of three divergent plate boundaries. Later these deposits have the potential to become hydrocarbon seals and are of particular interest to petroleum geologists. Thus the depth to the sea floor increases with increasing age away from the ridge. In the general case sea floor spreading starts as a rift in a continental land mass similar to the red sea east africa rift system today 5 the process starts with heating at the base of the.

Terms in this set 14 crust. As a result the new sea will evaporate partially or completely several times before the elevation of the rift valley has been lowered to the point that the sea becomes stable. The most extensive rift valley is located along the crest of the mid ocean ridge system and is the result of sea floor spreading examples of this type of rift include the mid atlantic ridge and the east pacific rise. The oldest known ocean floor is dated at about 200 million years indicating that older ocean floor has been destroyed through subduction at deep sea trenches.

Many existing continental rift valleys are the result of a failed arm of a triple junction although there are two the east african rift and the baikal. This is the case. The red sea rift is a spreading center between two tectonic plates the african plate and the arabian plate it extends from the dead sea transform fault system and ends at an intersection with the aden ridge and the east african rift forming the afar triple junction in the afar depression of the horn of africa. As oceanic lithosphere moves away from the ridge it cools and sinks deeper into the asthenosphere.

The rift valley at fast spreading centers is narrower than at slow spreading centers. Is either continental landmasses or oceanic ocean floors divergent boundary. The thin solid outermost layer of earth. A rift valley is a lowland region that forms where earth s tectonic plates move apart or rift rift valleys are found both on land and at the bottom of the ocean where they are created by the process of seafloor spreading rift valleys differ from river valleys and glacial valleys in that they are created by tectonic activity and not the process of erosion.

The boundary between two tectonic plates moving away from each other. If on the. During this period of evaporation large evaporite deposits will be made in the rift valley. The most extensive rift valley is located along the crest of the mid ocean ridge system and is the result of sea floor spreading.

The red sea rift was formed by the divergence between the african plate and the. It took exploration of the.