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Petrology is the study of rock and its formation. The major classes of rocks are igneous, sedimentary, and metamorphic. The study of soils, or pedology, also belongs in this category, most closely allied to sedimentary rock. |
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This is derived from igneous and sedimentary rock when these become buried in the earth's crust, subjected to heat and pressure, and later resurface.
This is derived from igneous (and metamorphic) rock as the rsult of weathering proceses in which minerals are separated from parent rocks and reorganized as sediments, which then solidify and become rock.This also includes study of soils.
This is the basic, most fundamental kind of rock. It orinates when magma, or melted rock from the earth's interior makes its way into the upper levels of the earth's surface and cools. Igneous rocks are largely classified according to mineral composition and texture. Mafic rocks (from Magnesium and Iron) largely formed from magmas rich in mangesium and Iron, and are principally associated with oceanic crust. Sialic rocks largely formed from magmas rich in silicon and aluminum, and are principally associated with continental crust. Coarse grained rocks have fairly large, even visible crystal structures, which result from slow cooling. Finer grained rocks have small, even invisible crystal structures which result from rapid cooling.
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This will be connected to personal studies, anthropology, culture, social institutions, sociology, and history as the site develops further. |
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This will be connected to other areas of science including physics, chemistry, astronomy, other areas of earth science, and biology. |
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