XI. Question (301-325) Flashcards
___________________14. Host rock of diamond.
Kimberlite
___________________15. The first silicate to crystallize in a mafic magma.
Olivine
___________________16. Rock type most susceptible to contact metamosomatism.
Limestone
___________________17. The temperature at which minerals may be polymorphed.
Inversion temperature
___________________18. Unmixing of solid solutions.
Exsolution
___________________19. Electrum is an ore of ____________.
Gold and Silver
___________________2. Process of essentially simultaneous capillary solution and deposition by which new minerals are substituted for earlier minerals or rocks.
Metasomatism
___________________2. The branch of geology that deals with the study of rocks.
Petrology
___________________20. Process of essentially simultaneous capillary solution and deposition by which new minerals are substituted for earlier minerals or rocks.
Metasomatism
___________________3. Ore yielding a single metal
Monometallic ore
A type of absolute age dating that does not rely on radioactive isotopes but by just counting the rings of the tree.
Dendrochronology
The branch of geology that deals with the study of land forms.
Geomorphology
The idea that the fossil organisms succeed one another in definite and recognizable order, so that rocks containing identical fossils are identical in age.
Principle of Fossil Succession
The physical and chemical alteration of rocks exposed to atmospheric influences on the earth’s surface.
Weathering
The study of the Earth’s past magnetism as recorded at the time of their formation.
Paleomagnetism
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.
Mid-ocean ridge
The study of the origin and arrangement of the broad structural features of the earth’s surface.
Tectonics
The rigid outer shell of the earth that plates are made of, including the crust and upper mantle.
Lithosphere
Minor metals that are extracted from ores that may be economic.
Byproduct metals
The metal content of an ore.
Grade
A mineral deposit that formed during original period or periods of mineralization.
Syngenetic deposit
The aggregation of ore minerals and gangue from which one or more metals may be extracted at a profit.
Ore body
The temporal relation or history of deposition of minerals.
Paragenesis
Fine grained rock texture without phenocrysts.
Aphanitic
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.
Static water level (SWL)
