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Books > Earth & environment > Earth sciences > Geology & the lithosphere > Soil science, sedimentology
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Biochronological Correlations (Paperback, Softcover reprint of the original 1st ed. 1991)
Loot Price: R2,872
Discovery Miles 28 720
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Biochronological Correlations (Paperback, Softcover reprint of the original 1st ed. 1991)
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The object of this book is to explain how to create a synthesis of
complex biostratigraphic data, and how to extract from such a syn
thesis a relative time scale based exclusively on the fossil
content of sedimentary rocks. Such a time scale can be used to
attribute relative ages to isolated fossil-bearing samples. From a
practical point of view, the method described in this book will
particularly interest paleontologists and geologists who must
construct zonations and establish correlations on the basis of bio
stratigraphic data that are both plentiful and apparently contra
dictory. It is well known that the difficulties involved in
constructing bio chronologic scales are largely due to the
discontinuous nature of the fossil record. We know that the
relationships between the first ap pearances (or disappearances) of
different fossil species are rarely constant in stratigraphic
sections that are distant from each other. It if often extremely
difficult to discover datums or sets of species that are useful in
making significant biochronologic correlations on a large scale.
The theoretical model explained here (known as the Unitary As
sociation Method) provides clear solutions to most of these
problems. That method is purely deterministic, as opposed to
statistical and probabilistic analytical techniques producing
"average" ranges. We demonstrate in Chapter 15 why most of these
techniques produce results which are usually not compatible with
the original biostrati graphic observations (i.e., the taxonomic
contents of the studied sam ples are not reproduced in the
outputs).
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