CH 26.3 Flashcards
define clasts
small rock and mineral fragments
what type of erosion are rock on earths surface exposed to
water,wind and other forces
what does it mean if clasts are being deposited
put away or dropped off
define pore space
the empty space in between the grains
define compaction
clasts stick together do to overlying weight
define cementation
where minerals precipitate slowly out of water solution and crystallize in spaces between clasts
how are sedimentary rocks formed
clasts get compacted together water moves between causing cementation
what is another name for clasts
detritus
what are sedimentary rocks called that are mostly made of clasts
detrital sedimentary rock
what is the decreasing size clasts
gravel, sand, silt ,mud/clay
which casts size would be deposited firstg
gravel
what are 4 common detrial sedimentary rock
conglomerate, sandstone, silt stone, shale
how are chemical sedimentary rocks formed
from water that contain dissolved solids and minerals crystallize precipitate
if sedimentary rocks contain remains of living organisms what are they called
biochemical sedimentary rock
what are 2 common biochemical sedimentary rocks
limestone and coal
