Transform fault

 One of the three fundamental types of boundaries between the mobile lithospheric plates that cover the surface of the Earth. Whereas spreading centers mark sites where crust is created between diverging plates, and subduction zones are where crust is destroyed between convergent plates, transform faults separate plates that are sliding past each other with neither creation nor destruction of crust

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gravity field of earth

The field of gravitational attraction of the Earth. Since, at the Earth's surface, the small centrifugal force due to the Earth's rotation is inseparably superimposed on the attraction, the gravity field is usually understood to include also the effect of the centrifugal force.

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Fault analysis

The detection and diagnosis of malfunctions in technical systems. Such systems include production equipment (chemical plants, steel mills, paper mills, and power stations), transportation vehicles (ships, airplanes, automobiles), and household appliances (washing machines, air conditioners).

Fault and fault structures

Products of fracturing and differential movements along fractures in continental and oceanic crustal rocks. Faults range in length and magnitude of displacement from small structures visible in hand specimens

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Visible Fault Features along the

The San Andreas Fault Zone is a major structural and physiographic feature in California. Many features of the movement can be seen either on a geologic map or out in the field.

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Basic Principles in Tectonics

by

Carlos Cramez & Jean Letouzey

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The Benioff zone

In a subduction zone the earthquake foci normally plot along a dipping plane at an angle of 33 to 60 degrees and this plane is called a Benioff zone. The zone is named after Hugo Benioff, a US seismologist who first described this feature. The Benioff zone extends to a depth of about 700 km.

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Plate Tectonics, the Cause of Earthquakes

The plates consist of an outer layer of the Earth, the lithosphere, which is cool enough to behave as a more or less rigid shell. Occasionally the hot asthenosphere of the Earth finds a weak place in the lithosphere to rise buoyantly as a plume, or hotspot. The satellite image below shows the volcanic islands of the Galapagos hotspot.

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tectonic landform

Pressure Ridge, California

.....Sag Basin, California

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Folds....Faults

Folds....Faults
Anticlines and Synclines-Class Notes

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نقاط داغ هاوایی

Hawaii: Geology, Plate Tectonics/Hot Spot

 

 

 

 

 

 

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MORPHO-TECTONICS AND MECHANISM OF EMPLACEMENT OF THE DOLERITE RINGS AND SILLS OF THE WESTERN KAROO,

Abstract -- The dolerite sill and ring-like structures of the Karoo Basin have been a matter of debate for a considerable period of time. However, the mechanism for their emplacement still remains an enigma

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The San Andreas Fault

The San Andreas Fault is the sliding boundary between the Pacific Plate and the North American Plate. It slices California in two from Cape Mendocino to the Mexican border.

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Red Sea Rift

The underwater volcano behind the formation is located on the Red Sea Rift, where the African and Arabian tectonic plates are slowly pulling apart,” New Scientist reported.

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