Term
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Definition
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Term
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Definition
| Results from transformation of a parent rock essentially in a solid state condition |
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Term
Chemically active fluid that would be necessary to promote metamorphism of a parent rock may come abundantly from the following rock
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Definition
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Term
| Identify a non-foliated metamorphic rock among the following |
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Definition
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Term
| Metamorphism of limestone produces |
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Definition
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Term
| Metamorphism of sandstone produces |
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Definition
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Term
| Slate produced from metamorphism |
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Definition
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Term
| The follopwing rock does not produce a schist |
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Definition
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Term
| The following sequence is the progressively increasing order of intensity of metamorphis of shale? |
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Definition
| Shale-slate-schist-gneiss |
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Term
| Metamorphic rocks in general |
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Definition
| Have the same chemical compsition as the parent rocks |
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Term
| Which one is not likley to cause metamorphism of rocks on a large scale? |
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Definition
| Radioactive decay genereated heat |
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Term
| The most diagnostic freature of a metamorphic rock is |
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Definition
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Definition
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Term
| The following mineral is abundantly present in shale |
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Definition
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Term
| A limestone cosists essentially of the following mineral |
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Definition
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Term
| The following mineral is abundantly present in sandstone |
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Definition
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Term
| A chert or a flint consists of |
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Definition
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Term
| Which of the following is alwasy a clastic or detrial sedimentary rock |
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Definition
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Term
| Which one is considered to be an chemical sedimentary rock |
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Definition
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Term
| Which one is always considered to be an evaporite sedimentary rock? |
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Definition
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Term
| Which one is considered to be a secondary sedimentary rock |
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Definition
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Term
| The most abundant sedimentary rock is |
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Definition
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Term
| Which of the following may not be commonly forming in very deep part of the modern ocean? |
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Definition
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Term
| Presecne of rock fragments is very common in |
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Definition
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Term
| The most diagnostic feature in sedimentary rocks is |
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Definition
| Layering or straification |
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Term
| High degree of angularity of mineral grains in a sandstone would imply |
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Definition
| Deposition of the sediments in a beach enviroment |
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Term
| Graded bedding implies deopsition |
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Definition
| In a deep water environment |
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Term
| The dominant mechanism by which calcite sediments are transformed into a limestone rock is |
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Definition
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Term
| Sandstone with poorly sorted grains would imply |
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Definition
| Short transportation of the sediments which make up the rocks |
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Term
| Which of the following sequences represents a continuted marine transgression |
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Definition
| Limestone at the top,shale underneath it, sandstone at the bottom |
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Term
| Which of the following rocks would often suggest that the sediments came from a nearby source |
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Definition
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Term
| A sequence of very thin beds of sedimentary rocks could imply |
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Definition
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Term
| Igneous rocks and volcanoes |
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Definition
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Term
| Two most abundant minerals in a granite are |
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Definition
potassium feldspar and quartz, |
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Term
| Two most abundant minerals in an andesite are |
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Definition
| soda-calcium feldspar and hornblende, |
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Term
| Two most abundant minerals in a basalt are |
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Definition
| potassium feldspar and hornblende, |
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Term
| Magmas are typically characterized by their |
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Definition
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Term
| Which one of the following pairs may be considered to be chemically very similar |
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Definition
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Term
| Which one of the following rocks always occurs as an intrusive igneous rock |
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Definition
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Term
| Which one of the following has the highest silica content |
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Definition
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Term
| Which one has the lowest silica content |
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Definition
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Term
| The silica content of a magma may increase by |
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Definition
as the magma evolves through process of crystallization or mineral formation with accompanying separation of the minerals |
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Term
| Magmas of different compositions may result from |
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Definition
different degrees of partial melting of a parent rock |
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Term
| Which one of the following rocks cannot generally be melted by a magma of andesitic composition |
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Definition
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Term
| The most common parent rock from which magmas are generated in the upper part of mantle at depths between 100 km and 300 km beneath the surface is |
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Definition
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Term
| The most abundant gas in magmas is |
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Definition
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Term
| Probably the second most abundant gas in most magmas is |
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Definition
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Term
| The highest amount of gas is generally associated with |
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Definition
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Term
| An important role of gases is to |
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Definition
decrease the melting temperature of a rock and promote the rate of growth of crystals, |
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Term
| Which one of the following rocks generally has the highest gas content |
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Definition
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Term
| Rhyolite rocks are much less abundant than granite rocks, because |
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Definition
magmas of both types of rocks are rich in silica content, making the magmas highly viscous and thus are not very likely to reach the surface where they can solidify. |
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Term
| The texture of an igneous rock provides a clue to the |
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Definition
the cooling rate or the emplacement history of the magma. |
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Term
| Which one of the following magmas may be produced by partial melting of an andesite rock: |
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Definition
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Term
| The following rock is most abundantly found on the ocean floor |
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Definition
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Term
| The following texture in a rock implies formation on the floor of a deep ocean: |
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Definition
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Term
| Lava with aa-type surface texture or jagged surface texture implies |
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Definition
the lava with a high silica content. |
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Term
| A batholith consists predominantly of |
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Definition
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Term
| The most abundant types of volcano are |
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Definition
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Term
| The hawaiian volcanic activies are believed to be linked to |
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Definition
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Term
| The chain of volcanic mountains,forming the cascade mountains,along the west coast in North American represtents volcanic activies |
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Definition
| Along convergent plate boundaries |
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Term
| Nuee ardented type volcanic eruptopns of mont pelle |
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Definition
| Gases and rhyolitic flows |
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Term
| The most abundant lawa flows at convergnet plate boundaries |
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Definition
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Term
| The excessive pressure needed for the krakatoe explosion of 1883 was related to |
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Definition
| Superheated steam generated by intusion of ocena water in the proximity of the magma chamber |
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Term
| The vesuvian eruption of 72ad destroyed the city of pompee was caused by |
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Definition
| Congvergent plate boundaries |
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Term
| Fissure erution is rarem, the rock type associated with it is |
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Definition
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Term
| The dominiant composition of the erupotive materis from mount pintatubo in the philippines is |
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Definition
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Term
| Lare majority of colanci eruptions nearly 75% of thme last for |
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Definition
| nearly less than 6 months |
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Term
| Which of the following is the least hazadrous to mankind |
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Definition
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Term
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Definition
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Term
| Probably the most important role of disintegration in weathering is |
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Definition
| To provide increased surface area for chemical reactions |
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Term
| Rhyolite weathers more rapidly than granite because |
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Definition
| Rhyolite is a fine grained rock and granite is a coarse grained rock |
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Term
| Basalt weathers more rapidly than andesite becasue |
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Definition
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Term
| Among the following,which one is likely to be the most stable under weathering conditions |
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Definition
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Term
| Which of the following minerals is most stable nder weathering conditions |
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Definition
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Term
| Which one of the following minerals is least stable under weathering conditions |
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Definition
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Term
| Which rock would be the most resistant to chemical weathering |
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Definition
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Term
| Which of the following mineral can promote the rate of chemical weathering |
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Definition
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Term
| Chemical weathering of rocks in a valley is more pronounced than that of the same rocks on a hill top becasue |
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Definition
| Acidity of water is higher in a valley |
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Term
| Which one of the following minerals cannont alone form clay mineral by weathering |
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Definition
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Term
| Which of the following inerals exposed to weatheirng condition leaves essentially no secondary mineral product |
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Definition
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Term
| Which one of the following minerals exposed to weathering conditions leaves a secondary mineral of.. |
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Definition
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Term
| Which of the following mineral exposed to a weathering condition leaveas a secondary mineeral of iron oxyhydroxide composition |
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Definition
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Term
| Which of the following minerals expose to weathering conditions would contribute potassium to river and ground waters |
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Definition
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Term
| Which one of the following minerals exposed to a weathering condition would contriubte calcium to river and ground waters |
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Definition
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Term
| Which od the following mineral does not influence the acidity of water |
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Definition
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Term
| Which one is not a source of acid that can help decompose or weather rocks and minerals |
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Definition
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Term
| The presence of organic matter |
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Definition
| Increases the rate of chemical weathering |
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