Paleoproductivity of the Indian Ocean during the Tertiary Period

  title={Paleoproductivity of the Indian Ocean during the Tertiary Period},
  author={William G. Siesser},
  • W. G. Siesser
  • Published 1 June 1995
  • Geography, Environmental Science
Middle to Late Eocene Changes of the Ocean Carbonate Cycle
Sedimentary records show that calcium carbonate (CaCO3) preservation fluctuated during the Eocene. These fluctuations are well documented for the equatorial Pacific. However, data from other basins
Mid‐Miocene paleoproductivity in the Atlantic Ocean and implications for the global carbon cycle
[1] A prominent, middle Miocene (17.5–13.5 Ma) carbon isotope excursion ubiquitously recorded in carbonate sediments has been attributed to enhanced marine productivity and sequestration of 13C
Opal sedimentation shifts in the World Ocean over the last 15 Myr
Barium and the Late Paleocene δ13C maximum: Evidence of increased marine surface productivity
Deep-sea sediment Ba* (Ba/Al2O3(sample) × 15% - Ba(aluminosilicate) records show increasing values synchronous with the evolution of the late Paleocene global δ13C maximum, reflecting an increase in
Meridional Contrasts in Productivity Changes Driven by the Opening of Drake Passage
Changes in atmospheric pCO2 are widely suggested to have played a major role in both the long‐term deterioration of Cenozoic climate and many superimposed rapid climate perturbations such as the
Quaternary primary productivity in Porcupine Seabight, NE North Atlantic
Biogenic opal and calcium carbonate contents in the Quaternary fine-grained sediments in the deep sea coral mound area (Hole U1317E and Hole U1318B drilled by IODP Expedition 307) in Porcupine


Paleoproductivity of Oceanic Upwelling and the Effect on Atmospheric C02 and Climatic Change during Deglaciation Times
In addition to variations in the Earth’s orbit, changes in atmospheric pC02 represent an important factor in creating global climatic and ice volume changes. Atmospheric pC02 fluctuations are largely
On the Late Pleistocene ocean geochemistry and circulation
A box model of the atmosphere and ocean was developed to investigate how geochemical distributions extant during the late Pleistocene may have come about. The model simulates the regional
Eocene-Oligocene Climatic and Biotic Evolution
The transition from the Eocene to the Oligocene epoch was the most significant event in Earth history since the extinction of dinosaurs. As the first Antarctic ice sheets appeared, major extinctions
Abrupt Climate Change and Transient Climates during the Paleogene: A Marine Perspective
It is investigated the possibility that sudden reorganizations in ocean and/or atmosphere circulation during these abrupt transitions generated short-term positive feedbacks that briefly sustained these transient climatic states.
Productivity of the glacial ocean: Discussion of the iron hypothesis
An increase in the productivity of the glacial-age Southern Ocean has been postulated to explain the decrease in pC0, of the atmosphere observed in ice cores. A plausible mechanism has been proposed
Pelagic sedimentation of aragonite: its geochemical significance.
Aragonite and high-magnesium calcite transported laterally from shallow-water regions, upon dissolution during settling into deeper water, may contribute to the neutralization of excess anthropogenic carbon dioxide added to the oceans.