ANTC17H3 Lecture Notes - Thermoluminescence
Document Summary
Hydrogen prefer to bond with o16 when it"s cold and o18 when it"s warm. Introduces error because of varying intensity of winters. Can use the data to get the idea of temperature throughout history. Glacial and interclacial periods (cold and not cold) Marine protein but only if there are no. Nitrogen can tell trophic level or where it is on the food chain. Measured in negative because of the choice of standard. Delta 13c = ratio of c13 to c12. Plants trees and bushes (c3) get values between -33 and -21; average of -26. C4 = -7 and -14; average of -14. Because they don"t overlap you can figure out what kind of plant. Delta 13c = -26, plant is a tree or bush. Delta13c = -12, plant is a tropical grass. Get values that correlate to their diet of plants. Delta c13 = -21 = -21 3c consumer.
