Exam 6: Sediment and Sedimentary Rocks

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

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

Plate tectonics do not influence the distribution of sedimentary rocks.

Rock salt is composed of the mineral ______.

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

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

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

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

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

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

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

____ limestones have a clastic texture.

The most common cements are _____ and ____.

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

_____ are massive deposits of limestone.

Clay is the finest sediment.

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

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

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

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