The large Palaeozoic continent of Laurentia was largely in North America, but included parts
of modern Europe. It was independent from late Neoproterozoic times at about 570Ma until it …

Differing interpretations of geophysical and geologic data have led to debate regarding
continent-scale plate configuration, subduction polarity, and timing of collisional events on …

Abstract The Klamath Mountains gold province is the second most important historical
producer in California, having produced more than 7 Moz of gold from both lode and placer …

Abstract The Upper Jurassic Galice Formation, a metasedimentary unit in the Western
Klamath Mountains, formed within an intra-arc basin prior to and during the Nevadan …

The tectonic significance of early Paleozoic convergent-margin rocks of the Alexander and
Sierran-Klamath terranes is poorly understood. New phengite 40Ar/39Ar and Rb-Sr results …

The geologic history of the Pacific Northwest is as unique as the region itself. Created via
tectonic plate movements and accretionary events, the original terranes were subsequently …

The Qussuk gold occurrence, located in southern West Greenland (North Atlantic Craton), is
a flattened, transposed, and metamorphosed, 20 km long Au±Cu system interpreted as an …

The Klamath Mountains Province of Northern California and southern Oregon, USA, consists
of generally east-dipping terranes assembled via Paleozoic to Mesozoic subduction along …

La Désirade Island in the Cenozoic Lesser Antilles forearc region exposes a pre-Tertiary
complex of oceanic volcanic, plutonic, and dike rocks. Previous work has established the …

At least 75% of gold produced in the State of Oregon came from the Blue Mountains. Most
gold within the Blue Mountains was mined from orogenic gold veins and associated placer …