Although marine productivity is a key parameter in the global carbon cycle, reliable
estimation of productivity in ancient marine systems has proven difficult. In this study, we …

Marine barite (BaSO4) is a relatively ubiquitous, though minor, component of ocean
sediments. Modern studies of the accumulation of barite in ocean sediments have …

Extraction of natural gas by hydraulic fracturing of the Middle Devonian Marcellus Shale, a
major gas-bearing unit in the Appalachian Basin, results in significant quantities of produced …

Abstract Changes in marine productivity and redox conditions during the end-Ordovician
(Hirnantian) glaciation and Ordovician–Silurian transition were investigated through Mo …

Breakthroughs in shale gas exploration in the Upper Ordovician-Lower Silurian strata of the
Upper Yangtze Platform have attracted interest in its sedimentary-tectonic evolution, but the …

The consequences of global warming for fisheries are not well understood, but the
geological record demonstrates that carbon cycle perturbations are frequently associated …

A perturbation of the carbon cycle and biosphere, linked to globally increased temperatures
about 55.9 million years ago, characterized the Palaeocene–Eocene Thermal Maximum. Its …

Barite dissolution and precipitation rates were investigated in closed system reactors, in
which total aqueous NaCl concentrations ranged from 0 to 1.5 molal, pH from 2 to 9, and …

The Paleocene–Eocene Thermal Maximum (PETM,~ 56 Ma) was a~ 200 kyr episode of
global warming, associated with massive injections of 13 C-depleted carbon into the ocean …

Anthropogenic global warming affects marine ecosystems in complex ways, and declining
ocean oxygenation is a growing concern. Forecasting the geographical and bathymetric …