Chapter 2 - Key Terms, Part 1 of 5

Website Notes: This exercise requires Netscape Navigator 4.x (or greater) or Internet Explorer 4.x (or greater).
This exercise asks you to match the key term in the left-hand column with its correct definition in the right-hand column. Do this by typing the number of the key term in the box beside its correct definition.

Press Check answers to see if you have answered correctly
Press Continue to advance to the next group of key terms.
Press Try again to clear all the checkboxes on the page.
1. Anhydrite   Unconsolidated sediment that consists primarily of carbonate minerals, usually aragonite or calcite.
2. Aragonite needles   A sedimentary rock that contains large amounts of angular gravel.
3. Aragonite   A form of calcium carbonate that precipitates from watery solutions in nature and is secreted by some organisms to form a skeleton. It forms tiny, needle-shaped crystals.
4. Arkose   Sediment consisting of mineral grains that were once part of organisms.
5. Banded iron formations   The mineral that consists of calcium sulfate, or the rock composed of that mineral.
6. Basalt   Slender crystals of the mineral aragonite that constitute most carbonate muds in the modern ocean.
7. Biogenic sediment   A mineral in which the basic building block is a carbon atom linked to three oxygen atoms.
8. Boulder   A siliciclastic sedimentary rock consisting primarily of sand-sized particles of feldspar.
9. Breccia   A sedimentary rock that consists primarily of carbonate minerals.
10. Burial metamorphism   A piece of gravel larger than 256 millimeters in diameter.
11. Calcite   Complex sedimentary rocks that consist of oxides, sulfides, or carbonates of iron interlayered with thin beds of chert.
12. Carbonate mineral   An accumulation of aragonite needles formed when calcareous skeletons collapse or when aragonite precipitates directly from shallow tropical seas. A major component of sediments that harden to form limestone.
13. Carbonate mud   Metamorphism produced when rocks are buried so deeply that they are exposed to temperatures and pressures high enough to change their chemical composition.
14. Carbonate rock   A form of calcium carbonate that precipitates from watery solutions in nature and is secreted by some organisms to form a skeleton. It forms blocky crystals.
15. Carbonate sediment   A fine-grained, extrusive, mafic igneous rock.

   

[CH 2 OSG]