Question 1

___ is a hard, compact, very fine-grained sedimentary rock composed entirely of silica.

Accepted Answer

A)   Tuff
B)   Chalk
C)   Chert
D)   Travertine
E)   ClaystoneF) A) and B)
G) A) and E)

Question 2

A(n)  ___ is sandstone containing a significant amount of feldspar.

Accepted Answer

A)   marble
B)   quartz sandstone
C)   graywacke
D)   shale
E)   arkoseF) A) and C)
G) B) and C)

Question 3

Limestone is a sedimentary rock composed mostly of the mineral calcite.

Accepted Answer

A) True 
 B)False

Question 4

A sandstone with more than 25% sand-sized feldspar is an arkose.

Accepted Answer

A) True 
 B)False

Question 5

Clay is the finest sediment.

Accepted Answer

A) True 
 B)False

Question 6

A(n)  ______ is sandstone in which more than 15% of the rock's volume consists of fine-grained matrix.

Accepted Answer

A)   quartz sandstone
B)   quartzite
C)   graywacke
D)   oolitic limestone
E)   arkoseF) A) and B)
G) A) and C)

Question 7

___ is a sedimentary rock formed by the cementation of coarse angular fragments of rubble.

Accepted Answer

A)   Breccia
B)   Conglomerate
C)   Boulder rock
D)   Arkose
E)   CataclasticF) A) and E)
G) B) and C)

Question 8

______ is the shift to a tighter packing of sediment grains due to the weight of overburden.

Accepted Answer

A)   Cementation
B)   Recrystallization
C)   Preservation
D)   Compaction
E)   DepositionF) None of the above
G) A) and D)

Question 9

_____ are massive deposits of limestone.

Accepted Answer

A)   Turbidity flows
B)   Alluvial fans
C)   Deltas
D)   Reefs
E)   LithosomesF) A) and B)
G) All of the above

Question 10

Rock salt is composed of the mineral ______.

Accepted Answer

A)   calcite
B)   trona
C)   dolomite
D)   halite
E)   gypsumF) A) and E)
G) A) and B)

Question 11

Peat is a brown lightweight unconsolidated deposit that ultimately can transform into ____.

Accepted Answer

A)   bogolite
B)   swampstone
C)   crude oil
D)   shale
E)   coalF) A) and D)
G) C) and E)

Question 12

The most common cements are _____ and ____.

Accepted Answer

A)   hematite; limonite
B)   dolomite; halite
C)   calcite; quartz
D)   olivine; pyroxene
E)   feldspar; micaF) A) and D)
G) B) and C)

Question 13

The environment of deposition is determined by the location in which deposition occurs.

Accepted Answer

A) True 
 B)False

Question 14

Sorting is the process by which sediment grains are selected and separated according to grain size.

Accepted Answer

A) True 
 B)False

Question 15

Carbonate rocks contain the _____ ion as part of their chemical composition.

Accepted Answer

A)   CaO32-
B)   CO32-
C)   CaCO32-
D)   limestone
E)   Carbonate rocks do not contain ions.F) B) and E)
G) All of the above

Question 16

Plate tectonics do not influence the distribution of sedimentary rocks.

Accepted Answer

A) True 
 B)False

Question 17

Boulders include all rounded particles coarser than 2 mm in diameter.

Accepted Answer

A) True 
 B)False

Question 18

_____ is a term that describes a series of visible layers in sedimentary rock.

Accepted Answer

A)   Units
B)   Tables
C)   Sheets
D)   Planes
E)   BeddingF) A) and E)
G) A) and D)

Question 19

____ limestones have a clastic texture.

Accepted Answer

A)   Fossiliferous
B)   Bioclastic
C)   Inorganic
D)   Chemical
E)   OoliticF) A) and B)
G) B) and D)

Question 20

Detrital sedimentary rocks form from cemented sedimentary grains that are fragments of a preexisting rock.

Accepted Answer

A) True 
 B)False

Exam 6: Sediment and Sedimentary Rocks

Limestone is a sedimentary rock composed mostly of the mineral calcite.

Correct AnswerverifiedShow Answer

Sorting is the process by which sediment grains are selected and separated according to grain size.

Correct AnswerverifiedShow Answer

Clay is the finest sediment.

Correct AnswerverifiedShow Answer

Plate tectonics do not influence the distribution of sedimentary rocks.

Correct AnswerverifiedShow Answer

___ is a sedimentary rock formed by the cementation of coarse angular fragments of rubble.

Correct AnswerverifiedShow Answer

____ limestones have a clastic texture.

Correct AnswerverifiedShow Answer

Peat is a brown lightweight unconsolidated deposit that ultimately can transform into ____.

Correct AnswerverifiedShow Answer

The most common cements are _____ and ____.

Correct AnswerverifiedShow Answer

___ is a hard, compact, very fine-grained sedimentary rock composed entirely of silica.

Correct AnswerverifiedShow Answer

A(n) ______ is sandstone in which more than 15% of the rock's volume consists of fine-grained matrix.

Correct AnswerverifiedShow Answer

______ is the shift to a tighter packing of sediment grains due to the weight of overburden.

Correct AnswerverifiedShow Answer

The environment of deposition is determined by the location in which deposition occurs.

Correct AnswerverifiedShow Answer

_____ are massive deposits of limestone.

Correct AnswerverifiedShow Answer

Boulders include all rounded particles coarser than 2 mm in diameter.

Correct AnswerverifiedShow Answer

A sandstone with more than 25% sand-sized feldspar is an arkose.

Correct AnswerverifiedShow Answer

Rock salt is composed of the mineral ______.

Correct AnswerverifiedShow Answer

Detrital sedimentary rocks form from cemented sedimentary grains that are fragments of a preexisting rock.

Correct AnswerverifiedShow Answer

Carbonate rocks contain the _____ ion as part of their chemical composition.

Correct AnswerverifiedShow Answer

_____ is a term that describes a series of visible layers in sedimentary rock.

Correct AnswerverifiedShow Answer

A(n) ___ is sandstone containing a significant amount of feldspar.

Correct AnswerverifiedShow Answer

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The most common cements are _ and .

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