Gilhooly, William Patrick, III; Macko, Stephen A.; Flemings, Peter B. (2006): Data report; Isotope compositions of sedimentary organic carbon and total nitrogen from Brazos-Trinity Basin IV (Sites U1319 and U1320) and Ursa Basin (Sites U1322 and U1324), deepwater Gulf of Mexico. IODP Management International, Washington, DC, United States, In: Flemings, Peter B., Behrmann, Jan H., John, Cedric M., Iturrino, Gerardo J., Aizawa, Yasutaka, Nguyen Thi Thanh Binh, De Silva, Neil, Dugan, Brandon, Edeskaer, Tommy M., Franke, Christine, Gay, Aurelien, Gilhooly, William Patrick, III, Gutierrez-Pastor, Julia, Jiang Shao Yong, Li Qianyu, Long, Hui, Moore, J. Casey, Nunoura, Takuro, Pirmez, Carlos, Reichow, Marc, Sawyer, Derek E., Schneider, Julia, Shumnyk, Anatoliy V., Suzuki, Takahiro, Takano, Yoshinori, Urgeles, Roger, Yamamoto, Yuzuru, Zampetti, Valentina, Proceedings of the Integrated Ocean Drilling Program; expedition reports; Gulf of Mexico hydrogeology; Expedition 308 of the riserless drilling platform from Mobile Alabama, to Balboa, Panama; Sites U1319-U1324, 30 May-8 July 2005, 308, 1-11, georefid:2008-116955

Abstract:
Organic carbon and total nitrogen stable isotopes are reported for sediments drilled during Integrated Ocean Drilling Program Expedition 308. Brazos-Trinity Basin IV sediments exhibited a broad range in organic carbon delta (super 13) C ranging between -27 per mil and -20 per mil (delta (super 13) C average = -24.1 per mil) compared to Ursa Basin sediments that are generally more depleted in (super 13) C (delta (super 13) C average = -25.7 per mil). Bulk delta (super 15) N values across all basins ranged from -2.7 per mil to 8.2 per mil (delta (super 15) N average = 3.7 per mil) and showed no obvious trend. The relative contribution of marine and terrestrial detrital material deposited within these sediments was inferred by comparing isotopic compositions to C/N values. The significant contribution of inorganic nitrogen (N (sub bound) average nearly equal 75%), as estimated from total organic carbon/total nitrogen plots, likely lowered the observed C/N values.
Coverage:
West: -94.2400 East: -89.0100 North: 28.0600 South: 27.1600
Relations:
Expedition: 308
Site: 308-U1319
Site: 308-U1320
Site: 308-U1322
Site: 308-U1324
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=10.2004/iodp.proc.308.208.2008 (c.f. for more detailed metadata)
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