ESS105H1 Study Guide - Bioturbation, Mudrock, Magnesium
Document Summary
Final - everything from today + plate tectonics. Shortened width of the continent - because increase height. A lot of rocks near surface act in brittle way. Deeper down ductile - rocks fold - 10s of kms down. Know that there are 2 different types of folds. Anticline, syncline - antihill, sink usually true, but sometimes flipped. So true definition - oldest rocks in it"s core. Which way will water run - that"s the dip direction. Cementation - mineral comes out of water (e. g. silica - quartz cement, calcite - carbonate cement, iron - red rocks - iron cement) and glues. Deep seafloor - only fine grains - clays, muds. Skeletons and shells or precip from water - look in textbook!! Limestone is almost pure calcite - mono-mineralic: often formed at reefs. Can see which way prevailing wind was blowing or current. Cross bedding - rock form of dunes from cross section.
