Category: Geology Dictionary


Geological Terms Beginning With "L" Geology Dictionary

Geological Terms Beginning With "L"

For terms beginning with other letters, please click below A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Labradorescence A display of spectral colors caused when light enters a material, strikes twinning or other planar surfaces within the stone and then reflects from them. Different twinning surfaces within the stone can reflect different colors of light to produce the visual effect of a stone with different color domains.

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Geological Terms Beginning With "W" Geology Dictionary

Geological Terms Beginning With "W"

For terms beginning with other letters, please click below A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Wadi A stream bed, often in a steep-sided valley, in an arid region that is dry except during the rainy season. The photo is from Wadi Degla in Northern Egypt. Warping A slight bend, uplift or subsidence of Earth's crust on a regional scale.

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Geological Terms Beginning With "A" Geology Dictionary

Geological Terms Beginning With "A"

For terms beginning with other letters, please click below A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Aa A term of Hawaiian origin. Used in reference to a basaltic lava flow that has a fissured, rough, clinkery, or jagged surface. When cool, they are very difficult to walk on. Abandoned Mine Lands Areas where past mining activity has scarred the land surface, streams, or groundwater.

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Geological Terms Beginning With "P" Geology Dictionary

Geological Terms Beginning With "P"

For terms beginning with other letters, please click below A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Pahoehoe A Hawaiian term for a lava flow that has a surface flow structure that looks like coiled rope or cord. Lavas with a relatively low viscosity can form a "ropy" surface. The term is also used for the rock materials after the flow has cooled.

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Geological Terms Beginning With "R" Geology Dictionary

Geological Terms Beginning With "R"

For terms beginning with other letters, please click below A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Radial Drainage A drainage pattern in which stream channels run away from a central high point such as a volcano or dome. The image show radial drainage on Cerro Culiacan, a volcano in west central Mexico.

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