chapter 26.3 Flashcards
define clasts
small rock and mineral fragments
what types of erosion are rocks on Earth´s surface
exposed to?
water, wind, and other forces
what does it mean if clasts are being transported?
being moved to one point to another
what does it mean if clasts are being deposited?
dropped off
define pore space
the empty space in between the grains
define compaction
the process by which clasts stick together due ti 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?
Most of the time both compaction and cementation work together
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 of clasts?
gravel, sand, silt, or clay/mud
which clast size would be deposited first?
gravel ¨heavy material¨
what are 4 common detrital sedimentary rocks?
conglomerate, sandstone, siltstone, and shale
how are chemical sedimentary rocks formed?
form from water that contains dissolved solids
if sedimentary rocks contain remains of living organisms what are they called?
biochemical sedimentary rocks
