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Mining and Resource depletion

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Information about Mining and Resource depletion

Published on February 18, 2009

Author: coachsteg

Source: slideshare.net

Description

Terminology regarding mining issues
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Geology and nonrenewable mineral resources terms

Geology Study of the earth's dynamic geologic history.

Study of the earth's dynamic geologic history.

Earths layers 2 kinds: Oceanic, Continental

Rock Types Caused by heat and pressure Caused by heat and then cooling Caused by weathering of rocks then compaction (pressure) Weathering Melting, then cooling Weathering Melting and pressure

Plate Tectonics (Plates)

Plate Boundries Convergent Transform Divergent Subduction Zone Earthquakes Along Fault

Magma/Lava Magma Lava Composite Volcano

Depletion Time (80%) Time frame in which usually 80% of mineral resource is predicted to be depleted-other 20% costs too much

Time frame in which usually 80% of mineral resource is predicted to be depleted-other 20% costs too much

Erosion

High grade Ore Ore containing large amounts of the pure desired mineral That’s some high quality H2O

Ore containing large amounts of the pure desired mineral

Mixture One or more elements or compounds…duh

One or more elements or compounds…duh

Mineral Naturally occurring, inorganic, crystalline

Naturally occurring, inorganic, crystalline

Mineral resources: Metallic, Nonmetallic

Subsurface mining/Surface mining Subsurface Surface

Strip Mining (area and contour)

Mountain top removal Primarily for Coal Spoils-Unwanted material from the removal of the mineral

Primarily for Coal

Open Pit Mining

Ore Mixture of mineral and impurities mined from ground-Various processes used to purify

Smelting

Subsidence (Due to mining mostly)

Tailings

Issues Resource depletion Destruction of natural resources (land, forest, mountains) Erosion of land after mining Hazardous waste tailings in ground and water

Resource depletion

Destruction of natural resources (land, forest, mountains)

Erosion of land after mining

Hazardous waste tailings in ground and water

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