1
Q
Clastic (detrital) def
A
made up of ground up bits of other rocks
2
Q
Chemical (Non-detrital)
A
rocks made from dissolved chemicals in water precipitating out to solid form
3
Q
Well sorted
A
grains of similar size
4
Q
Poorly sorted
A
grains of differing sizes
5
Q
Common non-detrital examples
A
Limestone, chert, dolomite, coal
6
Q
Common detrital example
A
Breccia, Conglomerate, Sandstone, Siltstone, Mudstone
7
Q
Grain shape components
A
form, roundness and surface texture
8
Q
ZIngg
A
Grain form
9
Q
Powers
A
Grain roundness
10
Q
Grain form method of measurement
A
Measurement of ratios between lengths of grain axes
11
Q
Roundness method of measurement
A
Visual comparison of grains to a standard chart (Powers)
12
Q
A
