Now showing items 1-6 of 6
Evidence for methanogenesis on slope sites during the late Paleocene and early Eocene: Carbonate concretions from the Dukla Nappe, outer Carpathians, Poland
The late Paleocene to early Eocene was a prolonged period of global warming punctuated by abrupt intervals of rapid temperature rise. These hyperthermal events, especially including the Paleocene-Eocene thermal maximum, ...
Regulation of fluorine chemistry and carbonate fluorapatite stability in deep sediments beneath the Peruvian upwelling zone
Fluorine is abundant in the oceans, and carbonate fluorapatite precipitation in marine sediment is a significant removal mechanism. A paucity of data has led to several misconceptions of fluorine geochemistry and carbonate ...
Laurentide ice sheet meltwater influences and millennial-scale climate oscillations on the northwestern slope of the Gulf of Mexico during Marine Isotope Stage 6 and Termination II
Sub-Milankovitch climate oscillations are well documented phenomena in the Gulf of Mexico during Marine Isotope Stage (MIS) 3 and Termination I, however very little is known about equivalent events during older time ...
A mantle xenolith window into the Grenville orogeny of Southern Laurentia
The nature of the lithospheric mantle beneath orogenic belts is incompletely understood due to the paucity of mantle xenolith-bearing basaltic magmas in such regions. One such place where we are afforded the opportunity ...
Barium cycling in shallow sediment above active mud volcanoes in the Gulf of Mexico
Two mud volcanoes in the Gulf of Mexico were examined to understand barium cycling in shallow seafloor sediment at regions of intense methane expulsion. Due to anaerobic oxidation of methane and sulfate reduction, barium ...
Fluid relationships in the Northern Gulf of Mexico using dissolved ion concentrations and strontium isotopes
Pore fluids from the slope in the Gulf of Mexico demonstrate specific ion enrichment and a range in concentration. Dissolved metal and halogen fluid concentrations and strontium isotope ratios from ten sites on the Gulf ...