Geology Lab Test 2-Rocks Exam With
100% Correct Answers
breccia - correct answers ✔✔A coarsely clastic rock consisting of relatively large angular
fragments bonded in a matrix of finer particles; a rudaceous rock consisting of sharp fragments
embedded in clay or sand. {SED}
conglomerate - correct answers ✔✔A sedimentary rock composed of rounded gravel-size
particles. {SED}
quartz sandstone - correct answers ✔✔Rock Type: Sedimentary
Type: clastic
Texture: medium sized particles
Composition: sand sized particles
Environment of Deposition: near shore, sandstone in which more than 90% of the grains are
quartz, oft rounded, cemented by calcite, iron oxide, or secondary quartz {SED}
graywacke - correct answers ✔✔gray to dark gray sandstones, with find grained matrices {SED}
arkose - correct answers ✔✔sandstone w/ more than 25% feldspar (potassium) has a peachy
(orthoclase) appearance) {SED}
coquina - correct answers ✔✔organic sedimentary rock formed from cemented pieces of shell.
{SED}
shale - correct answers ✔✔A fine-grained clastic rock composed of silt plus a significant
component of clay, which causes it to break readily along bedding planes. {SED}
, chert - correct answers ✔✔variety of silica containing micro-crystalline quartz {SED} our
specimen is tan, predominately
coal - correct answers ✔✔fossil fuel consisting of carbonized vegetable matter deposited in the
Carboniferous period {SED}
oolitic limestone - correct answers ✔✔limestone with small rounded areas. white or gray.
Three questions for the rock test - correct answers ✔✔1. To what group does this rock belong?
2. What texture does this rock exhibit?
3. Name that rock.
igneous textures - correct answers ✔✔crystalline, glassy, aphanitic (fine grained), phaneritic
(course grained), porphyritic (majority aphanitic, some phaneritic), vesicular (void spaces),
amygdaloidal (vesicular plus precipitation), pyroclastic
sedimentary rocks are formed by: - correct answers ✔✔precipitation or lithification
most common rocks on the earth's surface - correct answers ✔✔sedimentary
two types of weathering - correct answers ✔✔mechanical, chemical
mechanical weathering - correct answers ✔✔abrasion, biological action, frost wedge, force
chemical weathering - correct answers ✔✔chemical reactions
100% Correct Answers
breccia - correct answers ✔✔A coarsely clastic rock consisting of relatively large angular
fragments bonded in a matrix of finer particles; a rudaceous rock consisting of sharp fragments
embedded in clay or sand. {SED}
conglomerate - correct answers ✔✔A sedimentary rock composed of rounded gravel-size
particles. {SED}
quartz sandstone - correct answers ✔✔Rock Type: Sedimentary
Type: clastic
Texture: medium sized particles
Composition: sand sized particles
Environment of Deposition: near shore, sandstone in which more than 90% of the grains are
quartz, oft rounded, cemented by calcite, iron oxide, or secondary quartz {SED}
graywacke - correct answers ✔✔gray to dark gray sandstones, with find grained matrices {SED}
arkose - correct answers ✔✔sandstone w/ more than 25% feldspar (potassium) has a peachy
(orthoclase) appearance) {SED}
coquina - correct answers ✔✔organic sedimentary rock formed from cemented pieces of shell.
{SED}
shale - correct answers ✔✔A fine-grained clastic rock composed of silt plus a significant
component of clay, which causes it to break readily along bedding planes. {SED}
, chert - correct answers ✔✔variety of silica containing micro-crystalline quartz {SED} our
specimen is tan, predominately
coal - correct answers ✔✔fossil fuel consisting of carbonized vegetable matter deposited in the
Carboniferous period {SED}
oolitic limestone - correct answers ✔✔limestone with small rounded areas. white or gray.
Three questions for the rock test - correct answers ✔✔1. To what group does this rock belong?
2. What texture does this rock exhibit?
3. Name that rock.
igneous textures - correct answers ✔✔crystalline, glassy, aphanitic (fine grained), phaneritic
(course grained), porphyritic (majority aphanitic, some phaneritic), vesicular (void spaces),
amygdaloidal (vesicular plus precipitation), pyroclastic
sedimentary rocks are formed by: - correct answers ✔✔precipitation or lithification
most common rocks on the earth's surface - correct answers ✔✔sedimentary
two types of weathering - correct answers ✔✔mechanical, chemical
mechanical weathering - correct answers ✔✔abrasion, biological action, frost wedge, force
chemical weathering - correct answers ✔✔chemical reactions
