[
    {
        "id": "authors:bf159-jcb30",
        "collection": "authors",
        "collection_id": "bf159-jcb30",
        "cite_using_url": "https://authors.library.caltech.edu/records/bf159-jcb30",
        "type": "book_section",
        "title": "Santa Barbara Basin Flood Layers: Impact on Sediment Diagenesis",
        "book_title": "From the Mountains to the Abyss: The California Borderland as an Archive of Southern California Geologic Evolution",
        "author": [
            {
                "family_name": "Berelson",
                "given_name": "William M.",
                "clpid": "Berelson-William-M"
            },
            {
                "family_name": "Morine",
                "given_name": "Laura",
                "clpid": "Morine-Laura"
            },
            {
                "family_name": "Sessions",
                "given_name": "Alex L.",
                "orcid": "0000-0001-6120-2763",
                "clpid": "Sessions-A-L"
            },
            {
                "family_name": "Rollins",
                "given_name": "Nick",
                "clpid": "Rollins-Nick"
            },
            {
                "family_name": "Fleming",
                "given_name": "John C.",
                "clpid": "Fleming-John-C"
            },
            {
                "family_name": "Schwalbach",
                "given_name": "Jon",
                "clpid": "Schwalbach-Jon"
            }
        ],
        "abstract": "<p>The presence of gray layers, representing flood deposits, has previously been well documented in sediments obtained from Santa Barbara Basin, California. We studied geochemical aspects of these layers, in particular the carbon and sulfur contents and isotopic compositions, and found evidence of rapid pyrite formation. The data are consistent with complete (or nearly complete) sulfate consumption within the pore waters of a gray layer. This requires sulfate reduction rates (SRRs) that exceed the rate of resupply by diffusion, thus on the order of milimolar per day. The apparent rapidity of this diagenetic reaction is addressed. The net result is the precipitation of authigenic pyrite crystals enriched in&nbsp;<sup>34</sup>S that become part of the sediment record. Thus, any interpretation of S isotope fluctuations in the marine sedimentary rock record obtained from pyrite must take into account the phenomena we describe and document here.</p>",
        "doi": "10.2110/sepmsp.110.11",
        "isbn": "9781565763548",
        "publisher": "Society for Sedimentary Geology",
        "place_of_publication": "Tulsa, Oklahoma",
        "publication_date": "2019-01-01",
        "pages": "233-240"
    },
    {
        "id": "authors:mh1tm-brq97",
        "collection": "authors",
        "collection_id": "mh1tm-brq97",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160801-104531843",
        "type": "book_section",
        "title": "Development and Initial Biogeochemical Applications of Compound-Specific Sulfur Isotope Analysis",
        "book_title": "Principles and Practice of Analytical Techniques in Geosciences",
        "author": [
            {
                "family_name": "Greenwood",
                "given_name": "P. F.",
                "clpid": "Greenwood-P-F"
            },
            {
                "family_name": "Amrani",
                "given_name": "A.",
                "clpid": "Amrani-A"
            },
            {
                "family_name": "Sessions",
                "given_name": "A.",
                "orcid": "0000-0001-6120-2763",
                "clpid": "Sessions-A-L"
            },
            {
                "family_name": "Raven",
                "given_name": "M. R.",
                "clpid": "Raven-M-R"
            },
            {
                "family_name": "Holman",
                "given_name": "A.",
                "clpid": "Holman-A"
            },
            {
                "family_name": "Dror",
                "given_name": "G.",
                "clpid": "Dror-G"
            },
            {
                "family_name": "Grice",
                "given_name": "K.",
                "clpid": "Grice-K"
            },
            {
                "family_name": "McCulloch",
                "given_name": "M. T.",
                "clpid": "McCulloch-M-T"
            },
            {
                "family_name": "Adkins",
                "given_name": "J. F.",
                "orcid": "0000-0002-3174-5190",
                "clpid": "Adkins-J-F"
            }
        ],
        "contributor": [
            {
                "family_name": "Grice",
                "given_name": "Kliti",
                "clpid": "Grice-K"
            }
        ],
        "abstract": "Compound-specific isotope analysis (CSIA) has been extended to the ^(32)S and ^(34)S stable isotopes of sulfur (\u03b4^(34)S) through the combination of gas chromatography (GC) and multi-collector inductively coupled mass spectrometry (ICPMS). The molecular level resolution of sulfur-CSIA is greatly expanding the biogeochemical applications of existing sulfur isotope methods, particularly with respect to organic sulfur compounds. Sulfur participates in a variety of important biogeochemical and redox processes, with distinctive isotopic fractionations accompanying many of these. For example, hydrogen sulfide produced during microbial sulfate reduction can be strongly depleted in ^(34)S (up to 66\u2030 in \u03b4^(34)S) compared to the source sulfate. An improved understanding of sulfur biogeochemistry at the molecular level will assist in the interpretation of studies of sulfur cycling associated with the modern and paleo-environments. A comparison of \u03b434S values between organic and inorganic sulfur species may help to illuminate the complex role of sulfur in sedimentary organic diagenesis and the pathways of organic sulfur formation. The \u03b4^(34)S values of individual organic sulfur compounds from natural settings can be currently measured by GC-ICPMS with impressive accuracy, precision (&lt;0.5\u2030) and sensitivity (\u226520 pmol S) over a broad range of analyte volatility. The new sulfur-CSIA capability has already been used to study pathways of early diagenetic organic sulfurisation, volatile sulfur emission from the oceans, oil correlations, thermochemical sulfate reduction of petroleum hydrocarbons, and the relationship between OSCs and mineralising sulfides of large metal deposits.",
        "doi": "10.1039/9781782625025-00285",
        "isbn": "978-1-84973-649-7",
        "publisher": "Royal Society of Chemistry",
        "place_of_publication": "Cambridge",
        "publication_date": "2014-09-11",
        "pages": "285-312"
    }
]