1/38
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
Clastic
Either quartz (if scratches glass) or fragments of older rocks
Clastic size categories
Gravel, sand, silt, clay
Clastic shape categories
Rounded, sub-rounded, sub-angular, angular
As you move from the top of a mountain to the deep sea, clast sizes __________, shape becomes more _________, and maturity _________.
DECREASE, ROUNDED, INCREASES
Clastic rocks in order from the top of a mountain to the deep sea
Breccia, conglomerate, arkose sandstone, quartz sandstone, silt sandstone, shale
Chemical and Bio-
Precipitated materials or organically derived clasts
Chemical and bio- rocks are identified by ________ and __________.
TEXTURE, COMPOSITION
Breccia
Gravel
Angular grains
Dark brown w/ tan clasts
Debris fan/talus slope
Conglomerate
Gravel
Rounded grains
Poorly sorted rocks
River channel
Arkose
Sand
Sub-rounded grains
Poorly sorted feldspar (red-rbwon
River channel
Quartz sandstone
Sand
Roudned grains
Well-sorted
Beach
Siltstone
Silt
Fine grains
Gritty feel, blocky
Deep marine
Shale
Clay
Clay materials, very fine
Splits into layers, smooth
Deep marine
Chemical rocks
Rock gypsum, micrite, dolostone, oolitic limestone, chert
Rock gypsum
In clastic system
Micrite
Dolostone
Oolitic limestone
Chert
Biochemical rocks
Chalk, coquina, fossiliferous limestone, bituminous coal
Chalk
Coquina
Fossiliferous limestone
Bituminous coal
Debris fan/talus slope (top of mountain)
Breccia
River channel (bottom of mountain)
Conglomerate
River channel (mid-land)
Arkose
Swamp
Bituminous coal
Beach
Quartz sandstone
Evaporitic (light-colored lake)
Rock gypsum
Deep marine (2)
Siltstone, shale
Secondary alteration (below)
Chert
Beach
Coquina
Lagoon
Fossiliferous limestone
Intertidal
Oolitic limestone
Secondary alteration of limestones (below)
Dolostone
Deep shelf (2)
Chalk, micrite
All rocks in the _________ system have an acid reaction.
CARBONATE
All _______ rocks smell like organic materials
BIO-