Issues

COVER: Symmetrical folds from hinge of large-scale E-vergent recumbent fold in thin-bedded metagreywacke from the Franciscan Complex, ~100 m below the Log Spring thrust beneath the South Fork Mountain Schist, Thomes Creek, northern California Coast Ranges. Folding was accommodated predominantly by pressure solution at ~280°C under lawsonite-albite facies conditions, during transition from underplating to exhumation in the Early Cretaceous subduction zone along the western margin of North America. See “Subduction, accretion, and exhumation of coherent Franciscan blueschist-facies rocks, northern Coast Ranges, California” by William L. Schmidt and John P. Platt, https://doi.org/10.1130/L697.1.

PHOTO BY: John P. Platt

COVER DESIGN BY: Heather L. Sutphin