Barham, M. Murray, J. Joachimski, M. M. Williams, D. M. The onset of the Permo-Carboniferous glaciation: reconciling global stratigraphic evidence with biogenic apatite δ<sup>18</sup>O records in the late Visean <p>The δ<sup>18</sup>O values of phosphatic microfossils recovered from NW Ireland are used to determine the timing and magnitude of cooling associated with the onset of the Carboniferous glaciation. Microfossil fish δ<sup>18</sup>O<sub>apatite</sub> demonstrates a +2.4‰ (V-SMOW) shift, which, once corrected for δ<sup>18</sup>O<sub>seawater</sub> changes owing to evolving ice volumes, equates to an approximate 4.5 °C reduction in equatorial sea surface temperature between the earliest Asbian and the mid-Brigantian (late Visean). Both conodont and microfossil fish δ<sup>18</sup>O<sub>apatite</sub> indicate stabilization of an ‘icehouse’ climate during the Brigantian and into the Serpukhovian. Substantial late Visean cooling identified herein is in good agreement with global glacioeustatic records. </p> biogenic apatite δ 18 O records;NW Ireland;δ 18 O values;Carboniferous glaciation;Microfossil fish δ 18 O apatite;onset;ice volumes;phosphatic microfossils;Visean cooling;sea surface temperature;glacioeustatic records;stratigraphic evidence;Geology 2016-06-21
    https://geolsoc.figshare.com/articles/journal_contribution/The_onset_of_the_Permo-Carboniferous_glaciation_reconciling_global_stratigraphic_evidence_with_biogenic_apatite_sup_18_sup_O_records_in_the_late_Visean/3453008
10.6084/m9.figshare.3453008.v1