chapter 26.3 Flashcards
define clasts?
are small rock and mineral fragments
what type of erosion are rocks on Earth’s surface exposed to ?
water
wind
other forces
what does it mean if clasts are being transported?
being moved to one location to another.
what does it mean if clasts are being deposited?
it means it is being dropped off
define pore space?
the empty space between grains/clasts
define compaction?
the process by which clasts stick together due to the weight of overlying material.
define cementation?
minerals precipitate slowly out of a water solution and crystallize in the space between clasts.
how are sedimentary rocks formed?
clasts will be present
they will get compacted
water flow through the pore space
causing cementation
what is another name for clasts?
detritus
what are sedimentary rocks called that are mostly made of clasts?
detrital sedimentary rocks
what is the decreasing size of clasts?
gravel
sand
silt
clay/mud
which clasts size would be deposited first?
gravel ( the the bigger and the more it weighs will be dropped out first)
what are 4 common detrital sedimentary rocks ?
conglomerate (gravel
sandstone( sand)
siltstone
shale
how are chemical sedimentary rocks formed?
from water that contain dissolved solids, mineral crystal precipitates out of a solid into a solution>
if sedimentary rocks contain remains of living organisms what are they called?
biochemical sedimentary rocks
