John C. Jackson

TL;DR: In this article, a multi-proxy paleoredox investigation of previously unanalyzed strata of the late Paleoproterozoic Animikie Basin using drill cores through the ~1.85 Ga Stambaugh Formation (Paint River Group) in the Iron River-Crystal Falls district of the Upper Peninsula of Michigan, USA is presented.

TL;DR: In this article, metal cycling via physical and chemical weathering of discrete sources (copper mines) and regional (non-point) sources (sulfide-rich shale) is evaluated by examining the mineralogy and chemistry of weathering products in Great Smoky Mountains National Park, Tennessee, and North Carolina, USA.

TL;DR: A shock-induced polymorph (TiO2 II) of anatase and rutile has been identified in breccias from the late Eocene Chesapeake Bay impact structure as discussed by the authors.

TL;DR: In this paper, the authors examined the mineralogy and geochemistry of 11 older ignimbrite strata by optical petrography, electron microprobe, scanning electron microscope, X-ray diffraction, and various whole-rock geochemical techniques.

TL;DR: The ICDP-USGS Eyreville coreholes in the late Eocene Chesapeake Bay impact structure (CBIS) were drilled during 2005-2006 on the Delmarva Peninsula 7 km northeast of the town of Cape Charles, Virginia as discussed by the authors.