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Alkenones in sediments of Middle Valley, Leg 139 : application as thermal sensors Public Deposited

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  • The shallow sections of most holes drilled during Ocean Drilling Program Leg 139 contain alkenones derived from prymnesiophyte algae. The alkenones indicate a paleotemperature of the photic zone in the upper ocean during primary carbon fixation of 7°-15°C, with an average of 10.7°C. Based on laboratory hydrous pyrolyses these alkenones are altered to unknown products around 200°C and are thus useful as thermal probes. The disappearance of the alkenones occurs at various depths below seafloor in accordance with observed heat flows.
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  • Simoneit, B. R. T., Prahl, F. G., Leif, R. N., Mao, S. Z., (1994). Alkenones in sediments of Middle Valley, leg 139 : application as thermal sensors. Proceedings of the Ocean Drilling Program, Scientific Results, 139, 479-484.
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  • Proceedings of the Ocean Drilling Program, Scientific Results
  • description.provenance : Submitted by Mary Phan (mpscanner@gmail.com) on 2010-01-22T19:26:33Z No. of bitstreams: 1 sr139_26.pdf: 1488384 bytes, checksum: 4f3d96d2a0f3947977b789ee5ed4bd51 (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-01-25T15:22:56Z (GMT) No. of bitstreams: 1 sr139_26.pdf: 1488384 bytes, checksum: 4f3d96d2a0f3947977b789ee5ed4bd51 (MD5)
  • Vol. 139 (1994)
  • description.provenance : Made available in DSpace on 2010-01-25T15:22:56Z (GMT). No. of bitstreams: 1 sr139_26.pdf: 1488384 bytes, checksum: 4f3d96d2a0f3947977b789ee5ed4bd51 (MD5) Previous issue date: 1994

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