EESC 1174 Lecture Notes - Lecture 3: Moraine, Thorium, Foraminifera
20 Jun 2016
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A. 2. a) only 100 years of information measured: 4 reason to use paleoclimate. B. 4. a) what if temperature over the past 1000 years showed different measures: earth is. C. 2. h) moon - jan 5 bacteria - march 26. C. 3. a) only watch 100 years, only . 68 seconds of history: proxies - reading the past. D. 1. we generally don"t have actual records of temperature far back in time. We have records of something that responds to nature i. e. a proxy indicator. D. 2. a) when sediment layers are created younger sediment is always deposited on top of older sediment. D. 2. c) young stuff is layered on top of old stuff. Paleoclimate relies on layered archives (d. 2. c. 1) (d. 2. c. 2) tree rings, ice cores, coral all of these things have stratigraphy (d. 2. c. 2. a) tree rings - hundreds/thousand (d. 2. c. 2. b) ice cores - million (d. 2. c. 2. c) mud piling on sea floor - millions of years. D. 3. a) two kinds of water (d. 3. a. 1) normal (d. 3. a. 1. a) oxygen 16 which is lighter.
