Late Paleozoic faulting in western Newfoundland

Shifts in late Paleozoic atmospheric circulation over western equatorial Pangea: Insights from pedogenic mineral d18O compositions

The d18O values of pedogenic calcites, phyllosilicates, and iron (oxyhydr)oxides from fossil soils throughout the southwestern United States show systematic paleolatitudinal and temporal trends that indicate a significant change in soil moisture conditions and atmospheric circulation patterns over southwestern Euramerica throughout latest Pennsylvanian and Early Permian time. A progressive depl...

Late Paleozoic continental warming of a cold tropical basin and floristic change in western Pangea

Eccentricity-paced late Paleozoic climate change

Article history: Received 24 April 2011 Received in revised form 7 March 2012 Accepted 10 March 2012 Available online xxxx

A Late Paleozoic climate window of opportunity.

The highest rates of global organic carbon burial (up to 6.5 × 10 mol/Myr) over the past half billion years occurred during the Carboniferous–Permian (330–260 Myr), in large part because of the accumulation and burial of peat in broad tropical lowland basins (1). Atypical rates of organic carbon sequestration led to low atmospheric pCO2 and anomalously high pO2 (Fig. 1), which in turn triggered...

Late Quaternary faulting in the Sevier Desert driven by magmatism

Seismic hazard in continental rifts varies as a function of strain accommodation by tectonic or magmatic processes. The nature of faulting in the Sevier Desert, located in eastern Basin and Range of central Utah, and how this faulting relates to the Sevier Desert Detachment low-angle normal fault, have been debated for nearly four decades. Here, we show that the geodetic signal of extension acr...