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  • Articles  (30)
  • Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu  (21)
  • American Association for the Advancement of Science (AAAS)  (9)
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  • Articles  (30)
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  • 1
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    Sulfur isotopic composition of cenozoic seawater sulfate (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-20
    Description: A continuous seawater sulfate sulfur isotope curve for the Cenozoic with a resolution of approximately 1 million years was generated using marine barite. The sulfur isotopic composition decreased from 19 to 17 per mil between 65 and 55 million years ago, increased abruptly from 17 to 22 per mil between 55 and 45 million years ago, remained nearly constant from 35 to approximately 2 million years ago, and has decreased by 0.8 per mil during the past 2 million years. A comparison between seawater sulfate and marine carbonate carbon isotope records reveals no clear systematic coupling between the sulfur and carbon cycles over one to several millions of years, indicating that changes in the burial rate of pyrite sulfur and organic carbon did not singularly control the atmospheric oxygen content over short time intervals in the Cenozoic. This finding has implications for the modeling of controls on atmospheric oxygen concentration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paytan -- Kastner -- Campbell -- Thiemens -- New York, N.Y. -- Science. 1998 Nov 20;282(5393):1459-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉A. Paytan, M. Kastner, and D. Campbell are in the Geosciences Research Division, Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093, USA. M. H. Thiemens is in the Chemistry Department, University of California, San Dieg.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9822370" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Sulfate clues for the early history of atmospheric oxygen (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-05-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paytan, A -- New York, N.Y. -- Science. 2000 Apr 28;288(5466):626-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geological and Environmental Sciences, Stanford University, Braun Hall, Building 320, Stanford, CA 94305, USA. apaytan@pangea.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10798999" target="_blank"〉PubMed〈/a〉
    Keywords: *Atmosphere ; *Evolution, Chemical ; Geologic Sediments/*chemistry ; Iron/chemistry ; Oxidation-Reduction ; *Oxygen ; Seawater ; Sulfates/*chemistry/metabolism ; Sulfides/chemistry/metabolism ; Sulfur Isotopes ; Sulfur-Reducing Bacteria/metabolism ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    A dynamic marine calcium cycle during the past 28 million years (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-12-17
    Description: Multiple lines of evidence have shown that the isotopic composition and concentration of calcium in seawater have changed over the past 28 million years. A high-resolution, continuous seawater calcium isotope ratio curve from marine (pelagic) barite reveals distinct features in the evolution of the seawater calcium isotopic ratio suggesting changes in seawater calcium concentrations. The most pronounced increase in the delta44/40Ca value of seawater (of 0.3 per mil) occurred over roughly 4 million years following a period of low values around 13 million years ago. The major change in marine calcium corresponds to a climatic transition and global change in the carbon cycle and suggests a reorganization of the global biogeochemical system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Griffith, Elizabeth M -- Paytan, Adina -- Caldeira, Ken -- Bullen, Thomas D -- Thomas, Ellen -- New York, N.Y. -- Science. 2008 Dec 12;322(5908):1671-4. doi: 10.1126/science.1163614.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geological and Environmental Sciences, Stanford University, Building 320, Room 118, Stanford, CA 94305, USA. egriffith@ucsc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19074345" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Barium Sulfate/chemistry ; Calcium/*analysis/metabolism ; Calcium Carbonate/analysis ; Calcium Isotopes/analysis ; Climate ; Geologic Sediments/chemistry ; Seawater/*chemistry ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Gender differences and performance in science (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-02-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muller, Carol B -- Ride, Sally M -- Fouke, Janie -- Whitney, Telle -- Denton, Denice D -- Cantor, Nancy -- Nelson, Donna J -- Plummer, Jim -- Busch-Vishniac, Ilene -- Meyers, Carolyn -- Rosser, Sue V -- Schiebinger, Londa -- Roberts, Eric -- Burgess, David -- Beeson, Craig -- Metz, Susan Staffin -- Sanders, Lucinda -- Watford, Bevlee A -- Ivey, Elizabeth S -- Frank Fox, Mary -- Wettack, Sheldon -- Klawe, Maria -- Wulf, William A -- Girgus, Joan -- Leboy, Phoebe S -- Babco, Eleanor L -- Shanahan, Betty -- Didion, Catherine -- Chubin, Daryl E -- Frize, Monique -- Ganter, Susan L -- Nalley, E Ann -- Franz, Judy -- Abruna, Hector D -- Strober, Myra H -- Zimmer Daniels, Jane -- Carter, Emily A -- Rhodes, Jean H -- Schrijver, Iris -- Zakian, Virginia A -- Simons, Barbara -- Martin, Ursula -- Boaler, Jo -- Jolluck, Katherine Rose -- Mankekar, Purnima -- Gray, Robert M -- Conkey, Margaret W -- Stansky, Peter -- Xie, Aihua -- Martin, Pino -- Katehi, Linda P B -- Miller, Jo Anne -- Tess Thornton, Amelia -- Lapaugh, Andrea -- Rhode, Deborah L -- Gelpi, Barbara C -- Harrold, Mary Jean -- Spencer, Cherrill M -- Schlatter Ellis, Carla -- Lord, Susan -- Quinn, Helen -- Murnane, Margaret -- Jones, Patricia P -- Hellman, Frances -- Wight, Gail -- O'hara, Ruth -- Pickering, Mary -- Sheppard, Sheri -- Leith, David -- Paytan, Adina -- Sommer, Matthew H -- Shafer, Audrey -- Grusky, David -- Yennello, Sherry -- Madan, Ashima -- Johnson, Denise L -- Yanagisako, Sylvia -- Chou-Green, Jennifer M -- Robinson, Sandra -- New York, N.Y. -- Science. 2005 Feb 18;307(5712):1043.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15718449" target="_blank"〉PubMed〈/a〉
    Keywords: *Career Choice ; Female ; Humans ; Male ; *Science ; *Sex Characteristics ; Social Change
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Seawater sulfur isotope fluctuations in the Cretaceous (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-12
    Description: The exogenic sulfur cycle is tightly coupled with the carbon and oxygen cycles, and therefore a central component of Earth's biogeochemistry. Here we present a high-resolution record of the sulfur isotopic composition of seawater sulfate for the Cretaceous. The general enrichment of isotopically light sulfur that prevailed during the Cretaceous may have been due to increased volcanic and hydrothermal activity. Two excursions toward isotopically lighter sulfur represent periods of lower rates of pyrite burial, implying a shift in the location of organic carbon burial to terrestrial or open-ocean settings. The concurrent changes in seawater sulfur and inorganic carbon isotopic compositions imply short-term variability in atmospheric oxygen partial pressure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paytan, Adina -- Kastner, Miriam -- Campbell, Douglas -- Thiemens, Mark H -- New York, N.Y. -- Science. 2004 Jun 11;304(5677):1663-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geological and Environmental Sciences, Stanford University, Stanford CA 94305-2115, USA. apaytan@pangea.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15192227" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Glacial to Interglacial Fluctuations in Productivity in the Equatorial Pacific as Indicated by Marine Barite (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-22
    Description: An empirical correlation between marine barite (BaSO4) accumulation rate in core-top sediment samples from two equatorial Pacific transects (at 140°W and 110°W) and the estimated primary productivity of the overlying water column were used to evaluate glacial to interglacial changes in productivity. Fluctuations in barite accumulation rates down-core indicate that during glacial periods of the past 450,000 years, the productivity in the central and eastern equatorial Pacific was about two times that during intervening interglacial periods. This result is consistent with other evidence that productivity was high in the eastern and central equatorial Pacific during the last glacial.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paytan -- Kastner -- Chavez -- New York, N.Y. -- Science. 1996 Nov 22;274(5291):1355-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉A. Paytan and M. Kastner, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093-0212, USA. E-mail: apaytan@ucsd.edu F. P. Chavez, MBARI, Post Office Box 628, 7700 Sandholdt Road, Moss Landing, CA 95039-0628, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8910271" target="_blank"〉PubMed〈/a〉
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  • 7
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    Geochemistry. Mountains, weathering, and climate (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-01-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paytan, Adina -- New York, N.Y. -- Science. 2012 Feb 17;335(6070):810-1. doi: 10.1126/science.1218342. Epub 2012 Jan 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Earth and Planetary Sciences Department, University of California, Santa Cruz, CA 95064, USA. apaytan@ucsc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22282474" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Rapid variability of seawater chemistry over the past 130 million years (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-07-24
    Description: Fluid inclusion data suggest that the composition of major elements in seawater changes slowly over geological time scales. This view contrasts with high-resolution isotope data that imply more rapid fluctuations of seawater chemistry. We used a non-steady-state box model of the global sulfur cycle to show that the global delta(34)S record can be explained by variable marine sulfate concentrations triggered by basin-scale evaporite precipitation and dissolution. The record is characterized by long phases of stasis, punctuated by short intervals of rapid change. Sulfate concentrations affect several important biological processes, including carbonate mineralogy, microbially mediated organic matter remineralization, sedimentary phosphorous regeneration, nitrogen fixation, and sulfate aerosol formation. These changes are likely to affect ocean productivity, the global carbon cycle, and climate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wortmann, Ulrich G -- Paytan, Adina -- New York, N.Y. -- Science. 2012 Jul 20;337(6092):334-6. doi: 10.1126/science.1220656.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geobiology Isotope Laboratory, Department of Geology, University of Toronto, Toronto, ON M5S 3B1, Canada. uli.wortmann@utoronto.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22822148" target="_blank"〉PubMed〈/a〉
    Keywords: *Carbon Cycle ; Carbonates/chemistry ; Climate ; Geologic Sediments/analysis/*chemistry ; Minerals/chemistry ; Nitrogen Fixation ; Phosphorus ; Seawater/analysis/*chemistry ; Sulfates/chemistry ; Sulfur/analysis/*chemistry ; Time Factors
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Large-scale ocean deoxygenation during the Paleocene-Eocene Thermal Maximum (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-08-24
    Description: The consequences of global warming for fisheries are not well understood, but the geological record demonstrates that carbon cycle perturbations are frequently associated with ocean deoxygenation. Of particular interest is the Paleocene-Eocene Thermal Maximum (PETM), where the carbon dioxide input into the atmosphere was similar to the IPCC RCP8.5 emission scenario. Here we present sulfur-isotope data that record a positive 1 per mil excursion during the PETM. Modeling suggests that large parts of the ocean must have become sulfidic. The toxicity of hydrogen sulfide will render two of the largest and least explored ecosystems on Earth, the mesopelagic and bathypelagic zones, uninhabitable by multicellular organisms. This will affect many marine species whose ecozones stretch into the deep ocean.
    Keywords: Geochemistry, Geophysics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Solution 31P NMR spectra files from sediment samples collected during R/V JOIDES Resolution cruise JRES-336 (IODP336, North Pond) to the western flank of the mid-Atlantic Ridge in November of 2011 (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-05-26
    Description: Dataset: NMR FID files
    Description: Solution 31P nuclear magnetic resonance (NMR) spectra files from sediment samples collected during R/V JOIDES Resolution cruise JRES-336 (IODP336, North Pond) to the western flank of the mid-Atlantic Ridge in November of 2011. Samples were analyzed in 2016. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/816623
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-0939564
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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