Microstructural and geochemical perspectives on planktic foraminiferal preservation: “Glassy” versus “Frosty”
نویسندگان
چکیده
منابع مشابه
Microstructural and geochemical perspectives on planktic foraminiferal preservation: Glassy versus Frosty
[1] In recent years it has become apparent that the ‘‘cool tropic paradox’’ of Paleogene and Cretaceous ‘‘greenhouse’’ climates arises because of the diagenetic alteration of tropical planktic foraminiferal calcite near the seafloor, yielding artificially high dO values. Because the Mg/Ca compositions of foraminiferal and inorganic calcite are thought to be quite different, Mg/Ca measurements s...
متن کاملGlobal prediction of planktic foraminiferal fluxes
Global prediction of planktic foraminiferal fluxes from hydrographic and productivity data S. Žarić, M. Schulz, and S. Mulitza DFG Research Center Ocean Margins, University of Bremen, P. O. Box 330440, 28334 Bremen, Germany Received: 13 June 2005 – Accepted: 27 June 2005 – Published: 22 July 2005 Correspondence to: S. Žarić ([email protected]) © 2005 Author(s). This work is licensed under a C...
متن کاملAssessing the impact of diagenesis on 11B, 13C, 18O, Sr/Ca and B/Ca values in fossil planktic foraminiferal calcite
The geochemical composition of foraminiferal tests is a valuable archive for the reconstruction of paleo-climatic, -oceanographic and -ecological changes. However, dissolution of biogenic calcite and precipitation of inorganic calcite (overgrowth and recrystallization) at the seafloor and in the sediment column can potentially alter the original geochemical composition of the foraminiferal test...
متن کاملAssessing the impact of diagenesis on dB, dC, dO, Sr/Ca and B/Ca values in fossil planktic foraminiferal calcite
The geochemical composition of foraminiferal tests is a valuable archive for the reconstruction of paleo-climatic, -oceanographic and -ecological changes. However, dissolution of biogenic calcite and precipitation of inorganic calcite (overgrowth and recrystallization) at the seafloor and in the sediment column can potentially alter the original geochemical composition of the foraminiferal test...
متن کاملGeochemical Perspectives on Coral Mineralization
Corals open an exceptional window into many phenomena of geological, geochemical, climatic, and paleontological interest. From the Paleozoic to the present, corals provide some of the finest high-resolution archives of marine conditions. Corals are likewise exceptional for chronometric purposes, and even the terrestrial C timescale has now been calibrated against coral Th/U. Corals also represe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geochemistry, Geophysics, Geosystems
سال: 2006
ISSN: 1525-2027
DOI: 10.1029/2006gc001291