GSA Today
Volume 27, Number 10 (October 2017)

Cover image

About the cover:
The Chicxulub peak ring in 83-mm-diameter core is composed of granitic rocks crosscut with cataclastic and hydrothermal veins and has also been shock-metamorphosed as illustrated with planar deformation features with ~5 micron spacing in quartz (inset, with field of view 245 microns wide). See related article, p. 4–8.

doi: 10.1130/GSATG352A.1

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