Abstract West and East Ganderia in the northern Appalachians and Caledonides,
respectively, represent a Gondwanan superterrane situated along the Tornquist margin of …

Abstract The Iapetus Ocean was the first ancient ocean to be identified following the
development of plate tectonics; its history has been fundamental in relating orogenesis and …

The spatial coverage and temporal resolution of the Early Paleozoic paleoclimate record are
limited, primarily due to the paucity of well-preserved skeletal material commonly used for …

On multimillion-year time scales, Earth has experienced warm ice-free and cold glacial
climates, but it is unknown whether transitions between these background climate states …

Abstract The Ordovician of Scandinavia (ie Denmark, Norway and Sweden) has been
investigated for over two centuries and, through time, various chronostratigraphic schemes …

The Earth's climate cooled through the Ordovician Period leading up to the Hirnantian
glaciation. Increased weatherability of silicate rocks associated with topography generated …

The deformed margin of the Laurentian craton, preserved within the Appalachian-
Caledonide Orogen, is one of Earth's best studied ancient continental margins. Within the …

Oceanic hotspots with extreme enriched mantle radiogenic isotopic signatures—including
low 143Nd/144Nd indicative of subducted continental crust—are linked to plume conduits …

Neoproterozoic to Cambrian isolation of Laurentia during the breakup of Rodinia was
associated with multiple large igneous provinces, protracted multiphase rifting, and variable …

U-Pb dates on magmatic and detrital zircon from samples in the hinterland of the Taconic
orogen place new constraints on the timing and plate tectonic geometry of terrane accretion …