Fig. 2: South Pacific Last Glacial Maximum fine fraction samples in Nd-Sr isotope space.
From: A circumpolar dust conveyor in the glacial Southern Ocean
Remote open ocean samples in green and locations at/near the continental margins in gray. Last Glacial Maximum (LGM) data points and error bars represent averages and their 2 SD across the LGM interval (~18‒24 ka BP). See Supplementary Fig. 1 and Supplementary Tables 2 and 3 for details and references to terrestrial source area data. a Overview of potential source area compositions in the Southern Hemisphere. West Antarctic and Ross Sea shelf data obtained from < 63 µm fractions50,96. SB: Sulzberger Bay. b Detailed view with South American and Australian source areas subdivided into individual provinces. Average values for Antarctic ice cores calculated from LGM age samples at Dome B and C (εNd = −2.0 ± 1.5, 87Sr/86Sr = 0.7087 ± 0.0006, 2 SD, n = 9)31,44. Ross Sea shelf average96 is indicative of the composition of ice-rafted detritus exported into the South Pacific47. Note the isotopic difference of Southwest Pacific location PS75/091-3 relative to the remaining open ocean data (see Supplementary Note 5 and Supplementary Fig. 6 for further details).
