Toward an improved understanding of the marine barium cycle and the application of marine barite as a paleoproductivity proxy
Marine barite (BaSO4) is a relatively ubiquitous, though minor, component of ocean
sediments. Modern studies of the accumulation of barite in ocean sediments have …
sediments. Modern studies of the accumulation of barite in ocean sediments have …
Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition
The first major build-up of Antarctic glaciation occurred in two consecutive stages across the
Eocene–Oligocene transition (EOT): the EOT-1 cooling event at~ 34.1–33.9 Ma and the Oi-1 …
Eocene–Oligocene transition (EOT): the EOT-1 cooling event at~ 34.1–33.9 Ma and the Oi-1 …
Biotic community and landscape changes around the Eocene–Oligocene transition at Shapaja, Peruvian Amazonia: Regional or global drivers?
Since 2012, we have investigated a stratigraphic section encompassing the late Eocene–
earliest Oligocene interval at Shapaja (Tarapoto area, Peruvian Amazonia, ca. 7° S) …
earliest Oligocene interval at Shapaja (Tarapoto area, Peruvian Amazonia, ca. 7° S) …
Middle Eocene to late Oligocene Antarctic glaciation/deglaciation and Southern Ocean productivity
G Villa, C Fioroni, D Persico, AP Roberts… - …, 2014 - Wiley Online Library
Abstract During the Eocene‐Oligocene transition, Earth cooled significantly from a
greenhouse to an icehouse climate. Nannofossil assemblages from Southern Ocean sites …
greenhouse to an icehouse climate. Nannofossil assemblages from Southern Ocean sites …
[HTML][HTML] Marine barite morphology as an indicator of biogeochemical conditions within organic matter aggregates
Marine barite is commonly used as a proxy to reconstruct past ocean productivity. Its
distribution in the water column mirrors organic carbon fluxes since it precipitates within …
distribution in the water column mirrors organic carbon fluxes since it precipitates within …
A revised seawater sulfate S-isotope curve for the Eocene
The sulfur isotope ratio (δ 34 S) recorded in marine barite is commonly used to estimate
secular changes in the sulfur isotopic composition of seawater sulfate (δ 34 S SO4) …
secular changes in the sulfur isotopic composition of seawater sulfate (δ 34 S SO4) …
Accuracy and precision of 88Sr/86Sr and 87Sr/86Sr measurements by MC‐ICPMS compromised by high barium concentrations
HD Scher, EM Griffith… - Geochemistry, Geophysics …, 2014 - Wiley Online Library
Barite (BaSO4) is a widely distributed mineral that incorporates strontium (Sr) during
formation. Mass‐dependent fractionation of Sr isotopes occurs during abiotic precipitation of …
formation. Mass‐dependent fractionation of Sr isotopes occurs during abiotic precipitation of …
Equatorial Pacific productivity changes near the Eocene‐Oligocene boundary
There is general agreement that productivity in high latitudes increased in the late Eocene
and remained high in the early Oligocene. Evidence for both increased and decreased …
and remained high in the early Oligocene. Evidence for both increased and decreased …
Meridional contrasts in productivity changes driven by the opening of Drake Passage
Abstract Changes in atmospheric p CO2 are widely suggested to have played a major role
in both the long‐term deterioration of Cenozoic climate and many superimposed rapid …
in both the long‐term deterioration of Cenozoic climate and many superimposed rapid …
Paleoenvironmental significance of magnetofossils in pelagic sediments in the equatorial Pacific Ocean before and after the Eocene/Oligocene boundary
Magnetotactic bacteria (MTB), sensitive to redox status, leave fossil bacterial magnetite
(magnetofossils) in sediments. The relative contents of cuboctahedral, elongated prismatic …
(magnetofossils) in sediments. The relative contents of cuboctahedral, elongated prismatic …