ESS105H1 Lecture Notes - Lecture 1: Sedimentary Rock, Environmental Geology, Igneous Rock
Document Summary
Practical research to ensure quality building surfaces. Internal: radioactive decay of minerals inside the earth. External: sun (not part of the earth) This energy is responsible for many of the functions of earth. Sediments: sand, gravel, mud (used to be rocks and will be rocks again through weathering and erosion) Sedimentary rock: rock formed through compacting and cementing sediments. Metamorphic rock: sedimentary or igneous rock exposed to extreme heat and pressure (not melted) Magma: metamorphic rock (or igneous) to which extreme heat has been continually applied resulting in melting. Igneous: magma that has cooled down to form a rock. **plate tectonics is the most important theory in geology. Mesa/table (rock is continuous and flat in table lands) Butte: weaker parts are worn away leaving only the strongest parts and mountains. Hills and knobs: even more is worn away until there are no flat tables just hills and nobs. Eventually this would erode to spires and then nothing.
