The previous eight chapters have developed methods for the three-dimensional interpretation of maps. We look now at maps in a further dimension — the geological past. For the outcrop patterns on maps can reveal much of how the rock arrangements evolved through time; they enable interpretations to be made on the geological history of the map area, even the reconstruction of past geological environments. The timings that are derived from maps are usually relative, although reference to an absolute time scale may allow real dates to be assigned together with the establishment of time intervals and some idea of the rates at which events proceeded.
KeywordsGeological History Fault Scarp Marine Transgression Fault Movement Precambrian Rock
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