Geology 1403 Lab Exam 1
test questions and answers
rocks that form from the accumulation of materials that originate and are
transported as solid particles derived from both mechanical and chemical
weathering.
Detrital Sedimentary Rocks
no visible quartz grains
Difference between diorite and granite?
repetitive layering or grain alignment
foliated metamorphic rock
metamorphic rock that does not exhibit a banded or layered appearance
Non-Foliated Metamorphic Rock
marble, quartzite, serpentinite, hornfels, anthracite coal
Metamorphic rocks that are non-foliated
slate, phyllite, schist, gneiss
Metamorphic rocks that are foliated
granite pegmatite, granite, rholite and pumice, obsidian and volcanic tuff can be
What are the felsic composition igneous rocks?
peridotite
What igneous rock is ultramafic?
Cleavage patterns in minerals
,granite pegmatite, diorite pegmatite and gabbro pegmatite
What igneous rocks have pegmatitic texture?
granite, diorite, gabbro and peridotite
What igneous rocks have phaneritic texture?
granite, diorite, gabbro, rhyolite, andesite and basalt
What igneous rocks can have porphyritic texture?
rhyolite, andesite and basalt
What igneous rocks have aphanitic texture?
obsidian
What igneous rocks have glassy texture?
pumice and vesicular basalt
What igneous rocks have vesicular texture?
Gabbro pegmatit, gabbro, basalt, vesicular basalt and obsidian and volcanic tuff
can be
What are the mafic composition igneous rocks?
diorite pegmatite, diorite, andesite, and pumice, obsidian and volcanic tuff can be
What are the intermediate igneous rocks?
Sedimentary Detrital, grain size: gravel (> 2mm) has rounded rock fragments and
mineral grains
conglomerate
Sedimentary detrital, grain size: gravel (> 2mm), angular grains
Breccia
Sedimentary detrital, sand grain size, characterized by abundant feldspar (>15%),
rock fragments and mineral grains
, Arkose Sandstone
Sedimentary detrital(clastic), sand grain size, characterized by mostly q grains
(>90%), grains often rounded
Quartz Sandstone
Sedimentary detrital (clastic), sand grain size, characterized by abundant rock
fragments (>15%), sand sized quartz and minerals grains
Lithic Sandstone
Sedimentary detrital, clay grain size, characterized by mostly clay minerals
Shale
A sedimentary rock that forms from the chemical activities of organisms
Biochemical sedimentary rocks
Sedimentary rock that has undergone some form of chemical alteration (ex.
precipitate from a solution or settle from a suspension)
chemical sedimentary rock
Sedimentary, biochemical chemical, composed of mainly calcite (CaCO3),
fossilized shell in a fine grained matrix
Fossiliferous Limestone
test questions and answers
rocks that form from the accumulation of materials that originate and are
transported as solid particles derived from both mechanical and chemical
weathering.
Detrital Sedimentary Rocks
no visible quartz grains
Difference between diorite and granite?
repetitive layering or grain alignment
foliated metamorphic rock
metamorphic rock that does not exhibit a banded or layered appearance
Non-Foliated Metamorphic Rock
marble, quartzite, serpentinite, hornfels, anthracite coal
Metamorphic rocks that are non-foliated
slate, phyllite, schist, gneiss
Metamorphic rocks that are foliated
granite pegmatite, granite, rholite and pumice, obsidian and volcanic tuff can be
What are the felsic composition igneous rocks?
peridotite
What igneous rock is ultramafic?
Cleavage patterns in minerals
,granite pegmatite, diorite pegmatite and gabbro pegmatite
What igneous rocks have pegmatitic texture?
granite, diorite, gabbro and peridotite
What igneous rocks have phaneritic texture?
granite, diorite, gabbro, rhyolite, andesite and basalt
What igneous rocks can have porphyritic texture?
rhyolite, andesite and basalt
What igneous rocks have aphanitic texture?
obsidian
What igneous rocks have glassy texture?
pumice and vesicular basalt
What igneous rocks have vesicular texture?
Gabbro pegmatit, gabbro, basalt, vesicular basalt and obsidian and volcanic tuff
can be
What are the mafic composition igneous rocks?
diorite pegmatite, diorite, andesite, and pumice, obsidian and volcanic tuff can be
What are the intermediate igneous rocks?
Sedimentary Detrital, grain size: gravel (> 2mm) has rounded rock fragments and
mineral grains
conglomerate
Sedimentary detrital, grain size: gravel (> 2mm), angular grains
Breccia
Sedimentary detrital, sand grain size, characterized by abundant feldspar (>15%),
rock fragments and mineral grains
, Arkose Sandstone
Sedimentary detrital(clastic), sand grain size, characterized by mostly q grains
(>90%), grains often rounded
Quartz Sandstone
Sedimentary detrital (clastic), sand grain size, characterized by abundant rock
fragments (>15%), sand sized quartz and minerals grains
Lithic Sandstone
Sedimentary detrital, clay grain size, characterized by mostly clay minerals
Shale
A sedimentary rock that forms from the chemical activities of organisms
Biochemical sedimentary rocks
Sedimentary rock that has undergone some form of chemical alteration (ex.
precipitate from a solution or settle from a suspension)
chemical sedimentary rock
Sedimentary, biochemical chemical, composed of mainly calcite (CaCO3),
fossilized shell in a fine grained matrix
Fossiliferous Limestone
