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--- thermal_maturity_2 [11/05/2023 09:33] – mike_gss
+++ thermal_maturity_2 [11/05/2023 10:10] (current) – mike_gss
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-A summary of microfossil groups and their uses in maturity studies
+//A summary of microfossil groups and their uses in maturity studies. Numbers refer to particular biological events in Earth history (after Hartkopf-Froder et al., 2015).//
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+//Spore Colour Index (SCI) is one of the most widely used techniques as increasing thermal maturity imparts a progressive, cumulative, irreversible colour change which can be measured objectively using photometers.//
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+//Diffused carbon within the phosphatic mineral that makes up conodont fossils becomes more fixed with increasing thermal maturity resulting in a colour change. Visual comparisons are made with standard colour charts.//
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+//Similar fixation occurs in ostracod shells but some colour may also be imparted by the surrounding sediments.//
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+//Similar fixation occurs in foram shells and is particularly sensitive to colour change at lower temperatures associated with oil generation.//
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+//Thermal maturity parameters using vitrintie and microfossils (after Hartkopf-Froder et al., 2015)//
+{{:maturity12.jpg?nolink|}}