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Geology
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Alphabetical index
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Radiating texture
A radiating texture describes an aggregate of elongated ...
Reactivation
Reactivation refers to the filling of a fossil gallery with ...
Recrystallisation
Recrystallisation means the formation of new crystals in a ...
Reflected light
Reflected light is a concept used in various fields such as ...
Reflecting power
Reflecting power is the ability of a mineral to reflect ...
Residual deposit
A residual deposit is a deposit formed by the alteration of ...
Rhombohedral system
A rhombohedral system is a crystal system that can be ...
Rhyolite
Rhyolite is an effusive igneous rock composed of ...
Richter Scale
The Richter scale is a reference seismic scale for measuring ...
Ridge
A ridge is a chain of submarine mountains, aligned along ...
Rift
A rift is a graben extending over a very great distance. ...
Rillwash
Rillwash is water erosion in the form of trickles or rills. ...
Ring of fire
The ring of fire is the linear chain of volcanoes, or ...
Ringwoodite
Ringwoodite is a mineral from the mantle and some ...