biostratigraphy
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| //Types of Biozones and characteristics of species ranges that help define them. “Highest Occurrence Zones” are often used in industry because using extinction events or “tops” to define biozones mitigates against some of the effects of sample contamination due to “caving”.// | //Types of Biozones and characteristics of species ranges that help define them. “Highest Occurrence Zones” are often used in industry because using extinction events or “tops” to define biozones mitigates against some of the effects of sample contamination due to “caving”.// | ||
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| + | //This diagram illustrates some of the natural factors controlling distribution that can have a significant effect on how a species (and therefore its fossil remains) can be distributed in time and space in rocks during the lifetime **of the species itself**. Other factors after death will also come into play (such as dissolution or weathering) which determine whether the fossil remains are ultimately preserved or not. Consequently we can never be 100% certain if (for example) the highest occurrence of a fossil species in an individual rock section represents its final " | ||
biostratigraphy.1679300552.txt.gz · Last modified: 20/03/2023 08:22 by mike_gss