GEOLOGY 105 LAB FINAL EXAM
Sedimentary rocks are classified by their ___
texture
shale
forms in rivers, clastic, fine grained
sandstone
forms in lakes, rivers, or ocean floor, clastic
siltstone
forms in low energy environments (lakes, marshes, deep oceans), clastic
conglomerate
forms in alluvial fans and/or braided streams, clastic
, What type of sorting is sediment with multiple grain sizes?
poorly sorted
What type of sorting is sediment with one grain size?
well sorted
Fossiliferous Limestone
forms in shallow waters or nearshore, contains obvious and abundant fossils
Coquina
composed of mainly broken shell debris and is formed high energy environments by
wave action
Clastic rocks
sedimentary rocks that form from the broken fragments of other rocks
inorganic sedimentary rocks
originate as dissolved minerals that precipitate out of water due non- biological
processes
organic sedimentary rock
forms from the remains of once-living plants and animals
graded bedding
caused by changes in flow velocity during a debris flow
Sedimentary rocks are classified by their ___
texture
shale
forms in rivers, clastic, fine grained
sandstone
forms in lakes, rivers, or ocean floor, clastic
siltstone
forms in low energy environments (lakes, marshes, deep oceans), clastic
conglomerate
forms in alluvial fans and/or braided streams, clastic
, What type of sorting is sediment with multiple grain sizes?
poorly sorted
What type of sorting is sediment with one grain size?
well sorted
Fossiliferous Limestone
forms in shallow waters or nearshore, contains obvious and abundant fossils
Coquina
composed of mainly broken shell debris and is formed high energy environments by
wave action
Clastic rocks
sedimentary rocks that form from the broken fragments of other rocks
inorganic sedimentary rocks
originate as dissolved minerals that precipitate out of water due non- biological
processes
organic sedimentary rock
forms from the remains of once-living plants and animals
graded bedding
caused by changes in flow velocity during a debris flow
