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Fig. 5 | Progress in Earth and Planetary Science

Fig. 5

From: The pteropod species Heliconoides inflatus as an archive of late Pleistocene to Holocene environmental conditions on the Northwest Shelf of Australia

Fig. 5

Water temperature proxies at Sites U1461 and U1463 as compared with regional data. The gray band indicates a precipitation maximum on the NWS (Hallenberger et al. 2019; Ishiwa et al. 2019). (a) Paleo-water depth at both studied sites based on the sea-level curve of Lambeck et al. (2014). The relative sea level at Sites U1461 and U1463 was not corrected for isostatic deformation. (b) Water temperature based on the δ18O values of H. inflatus. (c) Water temperature calculated from δ18O data for Uvigerina spp. at Site U1463. (d) δ18O data for the planktic foraminifera G. menardii (Courtillat et al. 2020) used to calculate past changes in upper thermocline water temperatures at Site U1461. (e) Past variations in thermocline water temperatures based on the Mg/Ca ratio of P. obliquiloculata at Site MD01-2378 (Xu et al. 2008). (f) Water temperature record from the North West Cape of Australia (MD-2361) at 100 and 150 m depth based on the modern analogue technique (Spooner et al. 2011). (g) Sea surface temperature changes based on the Mg/Ca ratios of G. ruber in the Timor Sea (Site SO257-18548) and offshore of northwestern Australia (Site SO257-18571; Pei et al., 2021b)

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