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| 18km/sec per 106 light years, increase ain velocity away from us. |
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| Period of Nucleosynthesis |
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| settle in the crust (think LHS of the periodic table) |
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| "iron loving" -> core. second most abundant element (19%) to oxygen (49%). |
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| 10^21 kg of water on earth, need 10^6 comets in .5 Ga. |
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| homogeneous, natuarally occuring, solid substance with definable chemical composition and an ordered internal structure. |
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| Ways to identify a mineral |
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| color, streak, luster, hardness, density, crystal habit, cleavage. |
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donating one electron to another.
NaCl |
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| electrons shared over all atoms |
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| ratio of density with respect to water. |
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| coherent, naturally occuring solid, consisting of an aggregate of minerals or, less commonly, a mass of glass. |
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| Igneous v. Sedimentary v. Metamorphic |
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| Fire - settling - recrystallization at higher pressure or temperature. |
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| light in color due to iron- silicate composition |
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| dark due to magnesium iron composition |
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| little to no silicate present (olivine) |
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| volcanic intrusion parallel to rock bed |
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| intrusion cutting across beds. |
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| high viscosity = low flow. silicates are less flowing (more viscous). |
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| non-viscous, mafic rock (basalt) |
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| a form of weathering which causes cracks due to weather change |
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| leftovers from weathering. composition depends on parent rock, time, and climate |
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| a process which carried weathered rock down wind or slope. |
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| turns sediment into sedimentary rock. |
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| .0625 - 2mm in grain size |
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| set = [siltstone, shale: siltstone > shale] |
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| magnesian limestone, more resistant to erosion. based on dolomite mineral. |
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| precipitate of a silica rich solution |
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| unconsilidated debris which covers bedrock |
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| loose sediment to solid rock. |
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| layering of beds and bedding planes |
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