Page 189 - Laboratory Manual in Physical Geology
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An undisturbed succession of beds of rock strata can know what happened over a given portion of geologic
be divided into units of different color, composition, and history for the site where the stratigraphic sequence is
texture. The succession of such units, one on top of the located. This order of oldest on the bottom and youngest
other, is called a stratigraphic sequence. If you interpret on the top is the definition of the Law of Superposition,
each rock unit of the stratigraphic sequence in order, from one of the geologic principles that will be discussed in
oldest (at the base) to youngest (at the top), then you will detail in Chapter 8 .
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