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From GHN

A 1901 photo of a a survey geologist in Nome, Alaska examining gravel with possible gold pieces-Image by U.S. Geological Survey

Topics dealing with the earth's crust and composition

Subcategories

• Land surface - the area of the surface of a particular land mass or plot
• Land surface temperature - the real temperature of the ground
• Sediments - naturally occurring material that is broken down by the process of weathering and is later transported
• Soil - a natural body consisting of layers of minerals of variable thickness resulting from their interactions with plants
• Soil moisture - the quantity of water held in a given piece of soil
• Soil properties - properties of soil such as its density and composition
• Soil texture - a qualitative evaluation tool that estimates the composition of soil based on its proportions of clay, sand, and silt