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Progress in Earth and Planetary Science
Fig. 6 | Progress in Earth and Planetary Science

Fig. 6

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

Fig. 6

Selected downcore records of regional and global proxies compared with data from IODP Sites U1461 and U1463. The gray band indicates a regional precipitation maximum on the NWS (Hallenberger et al. 2019; Ishiwa et al. 2019). (a) Carbonate ion concentration calculated from δ13C values of pteropods. (b) Atmospheric CO2 concentration determined from the Dome Concordia (Antarctica) ice core (Monnin et al. 2001). (c) Limacina dissolution index (LDX) for pteropods from Sites U1461 and U1463. (d) The log ratio of Ti/Ca, which is a proxy for arid (low values) and humid (high values) conditions in northwestern Australia. Site U1461 (Hallenberger et al. 2019) records the onset of humid conditions after ca. 10 ka

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