Continuous evolution of oceanic crustal structure following an eruption at Axial Seamount, Juan de Fuca Ridge
Sediment dynamics across gravel-sand transitions: Implications for river stability and floodplain recycling
What lies beneath? Reconstructing the primitive magmas fueling voluminous silicic volcanism using olivine-hosted melt inclusions
COVER: Cambrian Tonto Group exposed near Palisades Canyon in eastern Grand Canyon, USA. Thumbnail image here shows units exposed: PCd—lower Dox Formation of the Mesoproterozoic Unkar Group; Cambrian Tonto Group consists of: Ct—Tapeats Sandstone, Cb—Bright Angel Formation, Cm—Muav Formation, and Cfm—Frenchman Mountain Dolostone (Sixtymile Formation is missing here); DTb—Devonian Temple Butte Formation, Mr—Mississippian Redwall Limestone. Next red cliffs are the Pennsylvanian/Permian Supai Group; the rim of Grand Canyon is the Permian Aubrey Group.
Photo by: Laura J. Crossey
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