Monday, November 4, 2013

Soils & Rocks



12 Soil Orders of the World
1. Gelisols-soils with permafrost within 2m of the surface
2. Histosols-organic soils
3. Spodosols-acid forest soils with a subsurface accumulation of metal-humus complexes
4. Andisols-soils formed in volcanic ash
5. Oxisols-intensely weathered soils of tropical and subtropical environments
6. Vertisols-clayey soils with high shrink/swell capacity
7. Aridisols-CaCO3 containing soils of arid environments with subsurface horizon development
8. Ultisols-strongly leached soils with a subsurface zone of clay accumulation and <35% base saturation
9. Mollisols-grasslands soils with high base status
10. Alfisols-moderately leached soils with a subsurface zone of clay accumulation and >35% base saturation
11. Inceptisols-soils with weakly developed subsurface horizons
12. Entisols-soils with little or no morphological development

http://www.cals.uidaho.edu/soilorders/orders.htm

Soil Types of Georgia
Sand, clay and loam make up the three main soil types of Georgia.  There are, however, combinations of these three with various additives, such as salt, rock and various sediments.
Georgia's primary soil order is ultisols.  Within this order there are 5 suborders: Aquults, Humults, Udults, Ustults, and Xerults.

Micaceous Schist (Metamorphic Rock)
Mica Schist is mostly composed of more than 50% tabular and elongated minerals with grain sized coarse enough to be visible to the unaided eye.  Schists have a developed tendency to split into layers.  It is made up of many layers and if this rock is struck it will break along a particular cleavage; thus the word schist is derived from the Greek word meaning 'to split'.

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