Extended Data Fig. 3: SEM imaging and mineralogy of IRD grains from the APcomp.
From: Antarctic icebergs reorganize ocean circulation during Pleistocene glacials
a, An SEM image of a quartz grain from site U1475 with an enlarged view of surface microtextures in the inset panel. b–d, SEM images of IRD grains with examples of relative peak intensities for elements derived from EDS point analyses. The images show spectra typical of quartz (b), of garnet (almandine member; c) and of K-feldspar (orthoclase; d). Scale bars are given in white on all SEM images.
