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fandomhigh2005-10-05 10:36 am
equalsmcsquared.livejournal.com) wrote in fandomhigh2005-10-05 10:36 am
Entry tags:
Geology
Good morning. I'm not feeling particularly creative today, so I have elected to bore you. *a pleasant smile* Coffee and doughnuts are in the back next to the roll sheet.
Metamorphic rocks are sedimentary or igneous rocks that have been altered by heat and/or pressure. As they are derived from previously existing igneous, sedimentary or even metamorphic rock, their appearance is variable. They are identified by the types of minerals they contain and their texture. Thermally metamorphosed rocks occur bordering igneous intrusions, which altered the surrounding rock originally because of their intense hear, resulting also in the formation of new minerals such as andalusite and garnet. Regionally metamorphosed rocks occur in the roots of mountain ranges, where intense pressures and high temperatures formed platy minerals (e.g. mica) and high-pressure minerals (e.g. staurolite).
In today's lab, you will be listing the individual properties of each sample I'm placing before you. And excellent job on Monday's assignment--these rocks will probably look quite familiar.
Metamorphic rocks are sedimentary or igneous rocks that have been altered by heat and/or pressure. As they are derived from previously existing igneous, sedimentary or even metamorphic rock, their appearance is variable. They are identified by the types of minerals they contain and their texture. Thermally metamorphosed rocks occur bordering igneous intrusions, which altered the surrounding rock originally because of their intense hear, resulting also in the formation of new minerals such as andalusite and garnet. Regionally metamorphosed rocks occur in the roots of mountain ranges, where intense pressures and high temperatures formed platy minerals (e.g. mica) and high-pressure minerals (e.g. staurolite).
In today's lab, you will be listing the individual properties of each sample I'm placing before you. And excellent job on Monday's assignment--these rocks will probably look quite familiar.
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Thomasina's smile brightens at the thought. She doesn't expect to ever not want to spend more time with her equations.
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Well, let's do it, then. At least it shouldn't be a difficult assignment . . .
[OOC: Sorry for disappearing. Other stuff intervened. Also, can remember next to nothing about rock clasification.]
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[OOC: I'm right there with you. ;)]