detrital sedimentary rocks

Question 1

sedimentary rocks made up of gravel sized sediments (< -1 phi)

Answer 1

gravelstones

Question 2

gravel stones that are made up of rounded sediments

Answer 2

conglomerate

Question 3

gravelstones that are made up of angular sediments ALSO KNOW AS “RUDITES”

Answer 3

breccia

Question 4

gravel stones with an interior source eroding from the same source and lithifying in place making the clasts and matricess compositions uniform

Answer 4

intraformational

Question 5

gravelstones with composition derived outside of depositional basin with the clasts and matrices composition different from each other

Answer 5

extraformational

Question 6

clast supported conglomerates

Answer 6

orthoconglomerate

Question 7

matrix supported conglomerates

Answer 7

paraconglomerate

Question 8

describes gravelstones with more than 90% of the framework clasts consisting of a single or few resistant rocks or minerals

Answer 8

oligomict

Question 9

describes gravelstones with clasts of different compositions that are prone to weathering and erosion

Answer 9

petromict

Question 10

describes gravelstones with clasts composed of a single composition

Answer 10

monomictic

Question 11

describes gravelstones with clasts composed of about 2-4 different types of parent rock

Answer 11

diamictic

Question 12

describes gravelstones with clasts with numerous amounts of types of composition

Answer 12

polymictic

Question 13

a type of gravelstone composed of lithified colluvium deposited from mass wasting

Answer 13

diamictite

Question 14

sedimentary rocks made up of sand sized sediments AKA “arenites”

Answer 14

sandstones

Question 15

a classification of sandstones that classifies them based on the propostions of quartz feldspars and lithic fragments

Answer 15

folk’s scheme

Question 16

sandstone with significant amount of feldspars

Answer 16

arkose

Question 17

sandstones with significant amount of mud matrix

Answer 17

wacke

Question 18

an older general term for matrix rich sandstone

Answer 18

graywacke

Question 19

sedimentary rocks made up of mud size sediments “lutite”

Answer 19

mudrock

Question 20

mudrocks that are made up of silt sized sediments

Answer 20

siltstones

Question 21

mudrocks that are made up of clay sized sediments

Answer 21

claystone

Question 22

mudrocks that are made up of the combination of silt and clay sized sediments

Answer 22

mudstone

Question 23

a type of mudrock that shows distinct layering

Answer 23

shale

Question 24

banding observed among mudrocks where they tend to break

Answer 24

fissility

Question 25

smectite rich claystones that formed from the alteration of volcanic ash deposits from explosive eruptions

Answer 25

bentonite