Vol. 320, Issue 10, 2020

Science Paper
Reconstruction of the Original Extent of the Tertiary Pre-Volcanic Gravels in the Northern Sierra Nevada (CA): Implications for the Range’s Paleotopography
Christina M. TippEmmanuel J. Gabet
The ancient auriferous gravels that helped spawn the California Gold Rush have figured prominently in investigations of the Cenozoic history of the Sierra Nevada. These fluvial sediments, scattered throughout the...
Science Paper
Zn2±Pb2±doped Calcite Shrub Fabrics: Abiotic Morphogenesis of Travertine-Like Dripstone Encrustation at the Jersey Zinc Mine, Southeastern British Columbia
Paul L. Broughton
A cm-thick calcite dripstone on the floor of the abandoned Jersey Zinc Mine in southeastern British Columbia, western Canada, consists of a mixture of shrub and radial fibrous elongated columnar...