chapter 6 maybe

Question 1

a __ is sandstone containing a lot of feldspar.

marble or arkose?

Answer 1

Arkose

Question 2

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

Answer 2

chert

Question 3

_______ is an organic rock formed from the compression and alteration of plant remains such as leaves, twigs, and tree trunks.

Answer 3

coal

Question 4

_____ is a coarse-grained sedimentary rock formed by the cementation of rounded gravel.
breccia or conglomerate?

Answer 4

conglomerate

Question 5

Which type of carbonate rock is formed at springs?

jasper or travertine?

Answer 5

travertine

Question 6

___ are features found within sedimentary rock that formed during or shortly after deposition.
sedimentary structures or bedding planes?

Answer 6

sedimentary structures

Question 7

In sandstone, a thick bed will often consist of a series of thinner inclined beds called ___.
cross beds or ripple beds?

Answer 7

cross beds

Question 8

the most common type sedimentary rocks are___.

Answer 8

detrital

Question 9

sand is mostly composed of ___ grains.

Answer 9

quartz

Question 10

___ sediments are deposited or precipitated as a result of the actions of organisms.

Answer 10

biochemical

Question 11

___ is the process by which sediment grains are selected and separated according to grain size by agent of transportation.
sorting or selection?

Answer 11

sorting

Question 12

the 2 primary types of carbonate sedimentary rocks are ___ and dolostone.
limestone or chert?

Answer 12

limestone

Question 13

A ___ is a layer of sedimentary rock with a vertical change in particle size, usually from coarse at the bottom to fine at the top.
cross bed or graded bed?

Answer 13

graded bed

Question 14

___ is a term that describes a series of visible layers in sedimentary rock.
planes or bedding?

Answer 14

bedding

Question 15

Peat is a brown lightweight unconsolidated deposit that ultimately can transform into __.
shale or coal?

Answer 15

coal

Question 16

a sedimentary rock that consists of sediment grains bound by cement into a rigid framework is called ___.
clastic or crystalline?

Answer 16

clastic

Question 17

A(n) __ is a body of rock of considerable thickness that is large enough to be mappable and with characteristics that distinguish it from adjacent rocks.

Answer 17

formation

Question 18

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

Answer 18

breccia

Question 19

__ is the shift to a tighter packing of sediment grains due to the weight of

Answer 19

compaction

Question 20

sedimentary rock on ___ will enable planetary geologists to one day unravel its history.
the moon, mars, or jupiter?

Answer 20

mars

Question 21

under what conditions is a sediment considered to be will-sorted?

Answer 21

when the grains are nearly all the same size.

Question 22

oil and natural gas originate from __ in marine sediments.

Answer 22

organic matter

Question 23

continental environments include all of the following except…

Answer 23

coral reefs

Question 24

rock salt is composed of the mineral __.

dolomite, trona or halite?

Answer 24

halite

Question 25

__ is the general term for the processes that convert loose sediment into sedimentary rock. lithification or stiffening?

Answer 25

lithification

Question 26

___ are sedimentary rocks deposited by direct precipitation of minerals from water. hydro rocks or chemical rocks

Answer 26

chemical rocks

Question 27

a(n)___ is a body of sediment deposited when a river flows into standing water, like a lake or sea. delta or sandbar?

Answer 27

delta

Question 28

carbonate rocks contain the __ ion as a part of their chemical composition. CaCO3^2- or CO3^2- or they don't contain any ions.

Answer 28

CO3^2-

Question 29

___ are massive deposits of limestone.

Answer 29

reefs

Question 30

__ are polygonal patterns that form in very fine sediment as it dries.

Answer 30

mud cracks.