ERRATUM: Sub-arc xenolith Fe-Li-Pb isotopes and textures tell tales of their journey through the mantle wedge and crust
Near-seafloor magnetic signatures unveil serpentinization dynamics at ultramafic-hosted hydrothermal sites
COVER: Wave ripples exposed during low tide at Sea Rim State Park on the Gulf coast of east Texas, USA. The average size and spacing of wave ripples are widely used to reconstruct past coastal environments. New research shows how defects in rippled beds—deviations from straight, evenly spaced ripple crests—are distinctive signatures of transient wave conditions. See “Ancient record of changing flows from wave ripple defects” by Perron et al., p. 875–878 in the October issue of Geology.
Photo by: Zoltan Sylvester
Cover design by: Heather L. Sutphin
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