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Fig. 6. Cyclostratigraphy interpretation of the Guandao sections and projection via magnetostratigraphy to Chaohu in upper Spathian and lowest Anisian. Pink shading denotes intervals that are dominated by reddish-colored facies in each section. Lower Guandao: Chrono-, magneto- and litho-stratigraphy and radiometric dating are from Lehrmann et al. (2006, 2015). The brown band shows residual maximal horizon of overlapping conodont ranges for Gladigondolella carinata and Ch. timorensis for the base of the Olenekian-Anisian transition (OAB interval) while the pink band indicates residual maximal horizon of overlapping Gd. tethydis and Tr. homeri for the top of the Olenekian-Anisian transition following the scheme of Goudemand et al. (2012). Guandao 3 (Mingtang): The lower part of the Guandao 3 section is correlated with the Lower Guandao section using the distinctive thick reddish-colored beds and the conodont biostratigraphy of the 171-207 m interval (Sun et al., 2015), and using volcanic ash beds and facies patterns in its upper part. GR and filtered 17-m cycles (Gauss filter, passband of 0.06 + 0.03 cycles/m) have 3 tuning options to eccentricity as discussec in Section 3.3. Upper Chaohu: Features of the Lower Guandao and Guandao 3 sections that may have correlative features to the Chaohu section (Fig. 3) are the conodont datums and reddish beds in the lower part, and magnetostratigraphy plus general GR signal and lithology patterns in the middle and upper parts (details in Appendi» Section A.4.2). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
Fig. 6. Cyclostratigraphy interpretation of the Guandao sections and projection via magnetostratigraphy to Chaohu in upper Spathian and lowest Anisian. Pink shading denotes intervals that are dominated by reddish-colored facies in each section. Lower Guandao: Chrono-, magneto- and litho-stratigraphy and radiometric dating are from Lehrmann et al. (2006, 2015). The brown band shows residual maximal horizon of overlapping conodont ranges for Gladigondolella carinata and Ch. timorensis for the base of the Olenekian-Anisian transition (OAB interval) while the pink band indicates residual maximal horizon of overlapping Gd. tethydis and Tr. homeri for the top of the Olenekian-Anisian transition following the scheme of Goudemand et al. (2012). Guandao 3 (Mingtang): The lower part of the Guandao 3 section is correlated with the Lower Guandao section using the distinctive thick reddish-colored beds and the conodont biostratigraphy of the 171-207 m interval (Sun et al., 2015), and using volcanic ash beds and facies patterns in its upper part. GR and filtered 17-m cycles (Gauss filter, passband of 0.06 + 0.03 cycles/m) have 3 tuning options to eccentricity as discussec in Section 3.3. Upper Chaohu: Features of the Lower Guandao and Guandao 3 sections that may have correlative features to the Chaohu section (Fig. 3) are the conodont datums and reddish beds in the lower part, and magnetostratigraphy plus general GR signal and lithology patterns in the middle and upper parts (details in Appendi» Section A.4.2). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
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