sedimentary rocks Flashcards
define clasts
small rock and mineral fragments
what types of erosion are rocks on Earths surface exposed to
water wind and other forces
what does it mean if clasts are being transported
its being moved from one place to another
what does it mean if clasts are being deposited
being dropped off
define pore space
empty space between the grains
define compaction
clasts stick together due to the weight of overlying material
define cementation
minerals precipitate slowly out of a water solution and crystallize in the spaces between clasts in a process
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 for clasts
`detrtial sedimentary rock
what is the decreasing size for clasts
gravel sand silt mud/clay
which clasts size would be deposited
gravel
what are 4 common detrital sedimentary rocks
conglomerate, sandstone siltstone shale
how are chemical sedimentary rocks formed
water that contains dissolved solids. minerals crystallize precipitate out of a solutions through evaporation
if sedimentary rocks contain remains of living organisms what are they called
biochemical sedimentary rocks
