Question

part 4: sedimentary rock practice. use the earth science reference table below to help answer the questions below. scheme for sedimentary rock identification. inorganic land - derived sedimentary rocks. texture, grain size, composition, comments, rock name, map symbol. details of texture, grain - size, composition, comments, rock name and map symbol for different inorganic land - derived sedimentary rocks. chemically and/or organically formed sedimentary rocks. texture, grain size, composition, comments, rock name, map symbol. details of texture, grain - size, composition, comments, rock name and map symbol for different chemically and/or organically formed sedimentary rocks. what is the grain size range of siltstone? what size particles make up shale? what mineral is rock salt composed of? what mineral is limestone composed of? what element comprises coal? what four rocks form from chemical precipitates and evaporates? a. b. c. d. two clastic textured rocks have mixed pieces from clay to boulders. which has rounded fragments? which clastic rock is made of clay? (hint: find clay in grain size, then look at the rock name). which two sedimentary rocks contain biologic material? you have a clastic rock made of quartz with angular fragments. what rock could this be? what are the six particle sizes? a. b. c. d. e. f.

Explanation:

Step1: Identify from the table

From the "Inorganic Land - Derived Sedimentary Rocks" section of the table, the grain - size range of siltstone is 0.004 to 0.0625 cm.

Step2: Identify from the table

Shale is made up of particles smaller than 0.004 cm (clay - sized particles).

Step3: Identify from the table

Rock salt is composed of halite.

Step4: Identify from the table

Limestone is composed of calcite.

Step5: Identify from knowledge

Coal is composed mainly of carbon.

Step6: Identify from the table

The four rocks that form from chemical precipitates and evaporates are rock salt, rock gypsum, dolostone, and limestone.

Step7: Identify from the table

Among the clastic textured rocks with mixed pieces from clay to boulders, conglomerate has rounded fragments.

Step8: Identify from the table

The clastic rock made of clay is shale.

Step9: Identify from the table

The two sedimentary rocks that contain biologic material are limestone (from remains of living organisms) and bituminous coal.

Step10: Identify from the table

A clastic rock made of quartz with angular fragments is breccia.

Step11: Identify from the table

The six particle sizes are boulder, cobble, pebble, sand, silt, and clay.

Answer:

• The grain - size range of siltstone is 0.004 to 0.0625 cm.
• Shale is made up of particles smaller than 0.004 cm.
• Rock salt is composed of halite.
• Limestone is composed of calcite.
• Coal is composed mainly of carbon.
• The four rocks that form from chemical precipitates and evaporates are rock salt, rock gypsum, dolostone, limestone.
• The clastic textured rock with rounded fragments (among those with mixed pieces from clay to boulders) is conglomerate.
• The clastic rock made of clay is shale.
• The two sedimentary rocks that contain biologic material are limestone and bituminous coal.
• A clastic rock made of quartz with angular fragments is breccia.
• The six particle sizes are boulder, cobble, pebble, sand, silt, clay.