EARTHSC 1G03 Study Guide - Final Guide: Nonconformist, Siltstone, Arkose
Document Summary
Anticline: rolls up, then down, like a wave. Syncline: rolls down, then up, like a bowl. Basement: bottom of basin e. g. michigan basin / escarpment. Relative: age relative to other objects / events. Cross-cutting: feature that cuts across another older feature (cid:470). Usually you use many dating methods on the same sample. Stratigraphic correlation: if a fossil is found above another in one region, youdll know the relative age and that if you find it in another region, it will still have the same relative age. Index fossil: existed for short time interval, but wide geographic distribution. Radioactive dating using half life to determine proportion of remaining amount of a radioactive isotope (cid:539)parent(cid:540) to the isotope it decomposes to (cid:539)daughter(cid:540) Di iculties: pretty di icult a er (cid:470)(cid:469)^th^ half-life detecting daughter if half-life too big. Geologic resource: something that came from the lithosphere vnot water!w. Reserve: where thereds oil that isndt worth getting.