The paleocene eocene thermal Maximum Events t associated by several minerological and chemical changes .The Sr 86/87 ratio may clarify that.
In Dabdaiba section from Eygpt auch phenomena have been cheked.
In kurdistan region such boundary associated by Incised valley deposits and apperance of Giant Gastropods.
Dear Fadhil
According to Pearce et al., 2012 which show that changes in the flux of Sr to the oceans during the PETM can be accounted for using the radiogenic Sr isotope system (87Sr/86Sr), enabling variations in δ88/86Sr to be attributed to shifts in the carbonate output flux. New δ88/86Sr, 87Sr/86Sr and Sr/Ca data from the PETM are presented from well-preserved planktonic foraminifera collected from Shatsky Rise in the Pacific Ocean. Foraminiferal calcite has been demonstrated to preserve the δ88/86Sr composition of seawater7, and all samples were handpicked to ensure that only specific species and size fractions were analysed. The new data is compared to previously reported variations in Sr/Ca ratios from the Pacific Ocean, Southern Ocean and Tropical Atlantic 3.
Gleason et al., 2001 suggest comparison of the 87^Sr/86^Sr isotopic ratio of fossil fish teeth (ichthyoliths) with the global seawater Sr curve should provide a highly accurate method for dating pelagic clay cores. This is potentially useful for deep sea red clay cores that are rich in ichthyolith material but barren of other fossils. The strontium component of the fish teeth is assumed to have grown in isotopic equilibrium with seawater.
However PETM can correspond with bio-event along Paleocene/Eocene boundary.
Regards
Massih
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