Rocks, Mining, and Sustainable Use

Apuntes

Environmental Management Unit 1 Rocks Unit 1.1 (Formation of Rocks) ★ Structure of the Earth (core is the lightest) ★ Types: ○ Igneous: made during a volcanic process ○ Sedimentary: formed from material derived from the weathering of other rocks or accumulation of dead plants and animals ○ Metamorphic: formed from existing rocks due to pressure and heat Igneous Sedimentary Metamorphic From liquid magma From other rocks segments From existing rocks Magma cools and forms solid rock Rock fragments become buried and increased pressure forms rocks and build up after some time Original form is changed by heat and pressure Mineral crystals sometimes (when solutions cannot absorb any more minerals, more if they don’t reach the surface and cool rapidly) Crystals absent Mineral crystals present No fossils Fossil sometimes No fossils Granite Limestone Slate 1 Environmental Management (UNITS 6,7,8) Unit 1.2 (Extraction) ★ Ore: rock worth the mining ★ Searching for Minerals ○ Prospecting: looking carefully at the surface of rocks ○ Remote Sensing: with satellites or planes ■ Taking photos ■ Sending signals and analyzing the reflections ■ Good because it covers large areas quickly ○ Geochemical ...