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Rocksisseyh
eesc
26
Geology
Undergraduate 1
10/14/2014

Additional Geology Flashcards

 


 

Cards

Term
granite
Definition

mineral:k-feldspar, quartz, plagioclase, biotite

composition:felsic

mafics: 5

texture: porphyritic with phaeritic groundmass

Term
granite
Definition

mineral:plagioclase, k-feldspar, quartz, biotite

composition:felsic

mafics: 20

texture: phaneritic

Term
syenite
Definition

mineral:k-feldspar, amphibole

composition:felsic

mafics:10

texture: phaneritic

Term
diorite
Definition

mineral:plagioclase, amphibo,e, biotite

composition:intermediate

mafics: 50

texture: phaneritic

Term
gabbro
Definition

mineral:pyroexene, plagioclase

composition: mafic

mafics:40 

texture:phaneritic

Term
periodite
Definition

mineral:olivine, pyroexene 

composition:ultramafic

mafics: 100 

texture:phaneritic

Term
rhyolite
Definition

comp:felsic

phenocrysts:k-feldspar, quartz, biotite, amphibole

texture: light grey

colour: porphryitic with aphanitic groundmass

Term
obsidian
Definition

comp: felsic

phenocrysts: na

texture: black

colour: glassy

Term
trachyte
Definition

comp:felsic

phenocrysts:k-feldspar

texture:medium grey

colour: porphyritic with aphanitic groundmass

Term
andesite
Definition

comp:intermediate

phenocrysts:amphibole, plagioclase

texture:medium grey

colour: porphyritic with aphenitic groundmass

Term
lapilli tuff
Definition

comp: intermed

phenocrysts:pyroexene

texture:med grey (greenish)

colour: lapilli (pyroclastic) 

Term
basalt
Definition

comp:mafic

phenocrysts: plagioclase, pyroexene

texture:dark grey

colour: porphyritic with aphenitic groundmass

Term
scoria
Definition

comp: mafic

phenocrysts:na

texture:medium brown

colour: vesicular 

Term
conglomerate
Definition

structure:

 minerology: quartz, calcite

texture: gravel sized, rounded, poorly sorted

Term
quartz sandstone
Definition

structure:

 minerology: quartz

texture: sandsize, rounded, very well sorted 

Term
akrose
Definition

structure:

 minerology: k-feldspar,quartz, hematite

texture:  mostly sandsized, subangular, poorly sorted

Term
greywacke
Definition

structure:

 minerology: kfeldspar, quartz, rock frags

texture: sand sized, subrounded, moderatley sorted

Term
siltstone
Definition

structure:parallel bedding, plant fossils

 minerology: quartz, rock frags

texture: silt sized, well sorted

Term
oolitic limestone
Definition
Term
crystaline limestone
Definition
Term
dolostone
Definition
Term
gypsum
Definition
Term
chert
Definition
Term
coal
Definition
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