Test Three Definitions

Question 0

Mineral

Answer 0

A naturally occurring inorganic element or compound having an orderly internal structure, characteristic Chemical composition, physical properties and crystal form

Question 1

Geologic map

Answer 1

Map showing the distribution of rocks on the surface

Question 2

Hornblende

Answer 2

A variety of amphibole mineral group

Question 3

Hornfels

Answer 3

A common name for a metamorphic rock formed by contact metamorphism and characterized by equidimensional grain size and without preferred orientation.

Question 4

Geothermal gradient

Answer 4

The rate at which temperature increases with depth

Question 5

Magmatic differentiation

Answer 5

A process by which a variety of igneous rock are formed from a single parent magma

Question 6

Graben

Answer 6

A block of earths crust with length greater than its width , that has dropped relative to blocks on other sides

Question 7

Hanging wall

Answer 7

Block of rock that lies above an inclined fault plane

Question 8

Matrix

Answer 8

Fine grained material that fill the interstices between larger particles in a rock

Question 9

Mantle plume

Answer 9

A buoyant mass of the hot mantle material that rises to the base of the lithosphere

Question 10

Mechanical weathering

Answer 10

The disintegration of rocks into smaller fragments by physical processes such as frost wedging

Question 11

Graded bedding

Answer 11

A type of bedding in which each layer is characterized by progressive decrease in grain size

Question 12

Leaching

Answer 12

A process by which groundwater dissolves and transport soluble components off rock or soil

Question 13

Loess

Answer 13

Unconsolidated wind-depisited silt and dust