XI. Question (301-325)

Question 1

___________________14. Host rock of diamond.

Answer 1

Kimberlite

Question 2

___________________15. The first silicate to crystallize in a mafic magma.

Answer 2

Olivine

Question 3

___________________16. Rock type most susceptible to contact metamosomatism.

Answer 3

Limestone

Question 4

___________________17. The temperature at which minerals may be polymorphed.

Answer 4

Inversion temperature

Question 5

___________________18. Unmixing of solid solutions.

Answer 5

Exsolution

Question 6

___________________19. Electrum is an ore of ____________.

Answer 6

Gold and Silver

Question 7

___________________2. Process of essentially simultaneous capillary solution and deposition by which new minerals are substituted for earlier minerals or rocks.

Answer 7

Metasomatism

Question 8

___________________2. The branch of geology that deals with the study of rocks.

Answer 8

Petrology

Question 9

___________________20. Process of essentially simultaneous capillary solution and deposition by which new minerals are substituted for earlier minerals or rocks.

Answer 9

Metasomatism

Question 10

___________________3. Ore yielding a single metal

Answer 10

Monometallic ore

Question 11

A type of absolute age dating that does not rely on radioactive isotopes but by just counting the rings of the tree.

Answer 11

Dendrochronology

Question 12

The branch of geology that deals with the study of land forms.

Answer 12

Geomorphology

Question 13

The idea that the fossil organisms succeed one another in definite and recognizable order, so that rocks containing identical fossils are identical in age.

Answer 13

Principle of Fossil Succession

Question 14

The physical and chemical alteration of rocks exposed to atmospheric influences on the earth’s surface.

Answer 14

Weathering

Question 15

The study of the Earth’s past magnetism as recorded at the time of their formation.

Answer 15

Paleomagnetism

Question 16

A seismically and volcanically active mountain range, marked by a central rift valley, that extends continuously through the major ocean basins for more than 64,000 km.

Answer 16

Mid-ocean ridge

Question 17

The study of the origin and arrangement of the broad structural features of the earth’s surface.

Answer 17

Tectonics

Question 18

The rigid outer shell of the earth that plates are made of, including the crust and upper mantle.

Answer 18

Lithosphere

Question 19

Minor metals that are extracted from ores that may be economic.

Answer 19

Byproduct metals

Question 20

The metal content of an ore.

Answer 20

Grade

Question 21

A mineral deposit that formed during original period or periods of mineralization.

Answer 21

Syngenetic deposit

Question 22

The aggregation of ore minerals and gangue from which one or more metals may be extracted at a profit.

Answer 22

Ore body

Question 23

The temporal relation or history of deposition of minerals.

Answer 23

Paragenesis

Question 24

Fine grained rock texture without phenocrysts.

Answer 24

Aphanitic

Question 25

The level at which water stands in a well or unconfined aquifer when no water is being removed from the aquifer either by pumping or free flow.

Answer 25

Static water level (SWL)