Question

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: Recall sedimentary - rock knowledge

Siltstone has a grain - size range of 0.004 - 0.0625 mm.

Step2: Identify shale particle size

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

Step3: Determine rock - salt mineral

Rock salt is composed of the mineral halite.

Step4: Identify limestone mineral

Limestone is composed of the mineral calcite (usually calcium carbonate).

Step5: Determine coal element

Coal is primarily composed of the element carbon.

Step6: List chemical - precipitate rocks

Four rocks that form from chemical precipitates and evaporates are rock salt, gypsum, anhydrite, and limestone.

Step7: Identify rock with rounded fragments

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

Step8: Identify clay - based clastic rock

The clastic rock made of clay is shale.

Step9: List sedimentary rocks with biologic material

Coal and limestone can contain biologic material.

Step10: Identify quartz rock with angular fragments

A clastic rock made of quartz with angular fragments could be sandstone.

Step11: List particle sizes

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

Answer:

1. The grain - size range of siltstone is 0.004 - 0.0625 mm.
2. Shale is made up of particles smaller than 0.004 mm.
3. Rock salt is composed of halite.
4. Limestone is composed of calcite.
5. Coal is primarily composed of carbon.
6. Four rocks that form from chemical precipitates and evaporates are rock salt, gypsum, anhydrite, limestone.
7. Conglomerate has rounded fragments among the described clastic - textured rocks.
8. Shale is the clastic rock made of clay.
9. Coal and limestone contain biologic material.
10. A clastic rock made of quartz with angular fragments could be sandstone.
11. The six particle sizes are boulder, cobble, pebble, sand, silt, clay.