GEOL 150Lg Lecture Notes - Lecture 7: Longwave, Mudcrack, Evaporite
Document Summary
- equatorial winds blow from east to west. - build deep reservoir of warm water. Less long wave radiation is getting out. They both affect the amount of long wave radiation which affects the the temperature of the entire earth. Impact: climate change is uncertain, they have a global impact, el nino releases energy, la nina stores energy. - much longer time scale (20-130 years) than enso. We can see signs of ancient climate change in many places: early geologists discovered evidence of past glaciations in u-shaped valleys. Glacial erosion takes out rock from mountains and leaves a you shaped valley. Sedimentary structures: ripple marks (running water), size, shape, and patterns can: - determine the strength of ancient currents. Alluvual fans: provide evidence of tectonic activity, undergo rapid erosion, draw down co2 from the atmosphere. Coal deposits: provide evidence of luxuriant vegetation, are major carbon sinks, lower the level of co2.
