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Stack #1705242
| Question | Answer |
|---|---|
| lava | magma that flows out onto Earths surfaced |
| igneous rock | form when lava or magma cools and minerals crystallize |
| partial meltin | the process whereby some minerals melt and relatively low temperatures while other minerals remain solid |
| Bowens reaction series | magma cools and crystallizes, minerals form in predictable patterns in a process now known |
| Fractional crystallization | similar to partial melting in that the composition of magma can change |
| intrusive rock | when magma cools and crystallizes below Earth's surface |
| extrusive rocks | magma that cools and crystallizes on Earth's surface |
| Basaltic rocks | such as gabbro, are dark-colored, have lower silica contents, and contain mostly plagioclase and pyroxene. |
| Granitic rocks | light-colored, have high silica contents and contain mostly quartz, potassium feldspar, and plagioclase feldspar. |
| texture | refers to the size, shape and distribution of the crystals or grains that make up a rock. |
| porphyritic texture | which is characterized by large, well-formed crystals surrounded by finer-grained crystals of the same or different minerals |
| vesicular texture | magma contains dissolved gases that escape when the pressure on the magma lessens. |
| Pegmatites | veins of extremely large-grained minerals |
| kimberlites | unbasic rocks |
Created by:
lvaughn941