From the early 19th century through the Civil War, caves in Kentucky, Tennessee, Virginia, West Virginia, Alabama, Georgia, Arkansas, and Missouri were important sources of nitrates, an essential ingredient of gun powder. Surface or near-surface accumulations of nitrate salts form coatings on rock...
but also the age and duration of it," said study lead author Brandi MacDonald of the University of Missouri. "We rarely, if ever, get to observe such clear evidence of ochre pigment mining of Paleoindian age in North America, so to get to explore and interpret this is an incredible opp...
The role of extreme floods in shaping bedrock channels V.R. Baker et al. Flood geomorphology of the Katherine Gorge, Northern Territory, Australia Geological Society of America Bulletin (1987) P.G. Blumberg et al. Experimental and theoretical studies of dissolution roughness Journal of Fluid Mechan...
Limestone relief from Longmen cavesEmpress as Donor with Attendants, limestone relief with traces of color, from Binyang cave, Longmen, Henan province, China,c.522, Bei (Northern) Wei dynasty; in the Nelson Atkins Museum of Art, Kansas City, Missouri. ...
Courtesy of the Nelson-Atkins Museum of Art, Kansas City, Missouri (Nelson Fund) Stone sculptures in the Binyang cave, Longmen, Henan province, China, from the Northern... Jimbunkagaku Kenkyusho, Kyoto, Japan Longmen caves: disciples of Buddha ...