Measuring Pre-historic Climate
Pre-historic climate conditions are inferred by analyzing tree rings, sediment layers, ice cores, and corals. Each of these contain annual layers whose characteristics depend in part on the climate conditions that existed during the creation of each layer. These characteristics include chemical composition, color, texture, and thickness. The following sections describe how these characteristics are used to piece together the record of ancient climate variations.
Tree Cores
Sediment Cores
Ice Cores
Coral Cores
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