GGR101H1 Lecture Notes - Lecture 3: Radiocarbon Dating, Willard Libby, Absolute Dating
20 Apr 2016
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Document Summary
Chronology is the study of how we organize and date events: two kinds of time measurements in the past. Events in a logical sequence or ordering strata and stratification: based on a number of basic geological principles related to, first developed in geology, but now also used in geography, archaeology, etc, uniformitarianism. What we see happening today is the same as what happened in the past. The present is the key to the past: original horizontality. Sediment is laid down in horizontal layers (called strata) When it isn"t exactly horizontal, but still holds order of strata. Syncline (low part of the fold: law of superposition. Strata are normally laid down in chronological order. Oldest strata are at the base of the sequence. Younger strata at top and older at the bottom: lateral continuity. If separated, they can be assumed to be continuous: faunal succession if there is a split.
