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Leg 199 summary

Leg 199 summary
Leg 199 summary
Ocean Drilling Program (ODP) Leg 199, "The Paleogene Equatorial Transect" (Sites 1215-1222), was designed to study the evolution of the equatorial Pacific current and wind system as Earth went from maximum Cenozoic warmth to initial Antarctic glaciations. The drilling program was primarily devoted to a transect along the 56- to 57-Ma crust, old enough to capture the Paleocene/Eocene boundary in the basal, more carbonate-rich sediments. The Leg 199 transect extends from a paleolatitude of ~4°N- ~4°S to encompass a relatively thick lower Eocene sediment section perhaps 8° north of the paleoequator. One site (1218) was also drilled on ~40-Ma crust to collect a near-equatorial sediment sequence from the middle Eocene to the Oligocene in order to investigate the transition in global climate from the Eocene "greenhouse" to Oligocene "icehouse."
The Pacific plate has drifted northward through Cenozoic time transporting biogenic sediments deposited under the high-productivity equatorial belt into a zone of extremely slow sediment (red clay) accumulation. Thus, the central tropical North Pacific Ocean is an ideal region in which to sample shallowly buried Paleogene sequences of equatorially deposited biogenic sediments. The thin Neogene cover of red clay in the area means that the entire Paleogene sediment section is potentially drillable by ODP advanced piston coring and extended core barrel methods.
ISSN10962158
87pp
Texas A & M University Ocean Drilling Program (CDROM)
Backman, J.
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Busch, W.H.
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Coxall, H.K.
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Faul, K.
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Gaillot, P.A.
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Hovan, S.A.
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Janecek, T.R.
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Knoop, P.
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Kruse, S.
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Lanci, L.
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Lear, C.H.
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Lyle, M.
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Moore, T.C.
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Nigrini, C.A.
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Nishi, H.
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Nomura, R.
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Norris, R.D.
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Pälike, H.
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Parés, J.M.
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Raffi, I.
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Rea, D.K.
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Steiger, T.H.
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Tripati, A.K.
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Vanden Berg, M.D.
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Wade, B.S.
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Wilson, P.A.
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Lyle, M.
Wilson, P.A.
Janecek, T.R.
Backman, J.
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Busch, W.H.
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Coxall, H.K.
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Faul, K.
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Gaillot, P.A.
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Hovan, S.A.
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Janecek, T.R.
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Lanci, L.
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Lear, C.H.
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Lyle, M.
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Moore, T.C.
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Nigrini, C.A.
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Nishi, H.
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Nomura, R.
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Norris, R.D.
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Pälike, H.
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Parés, J.M.
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Quintin, L.
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Raffi, I.
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Rea, D.K.
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Steiger, T.H.
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Tripati, A.K.
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Vanden Berg, M.D.
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Wade, B.S.
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Wilson, P.A.
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Wilson, P.A.
Janecek, T.R.

Backman, J., Busch, W.H., Coxall, H.K., Faul, K., Gaillot, P.A., Hovan, S.A., Janecek, T.R., Knoop, P., Kruse, S., Lanci, L., Lear, C.H., Lyle, M., Moore, T.C., Nigrini, C.A., Nishi, H., Nomura, R., Norris, R.D., Pälike, H., Parés, J.M., Quintin, L., Raffi, I., Rea, B.R., Rea, D.K., Steiger, T.H., Tripati, A.K., Vanden Berg, M.D., Wade, B.S. and Wilson, P.A. (2002) Leg 199 summary. Lyle, M., Wilson, P.A. and Janecek, T.R. (eds.) In Proceedings of the Ocean Drilling Program, Initial Reports. Vol. 199. Paleogene Equatorial Transect. Covering Leg 199 of the cruises of the Drilling Vessel "Joides Resolution", Honolulu, Hawaii, to Honolulu, Hawaii, Sites 1215-1222, 23 Oct-16 Dec 2001. Texas A & M University Ocean Drilling Program (CDROM). 87pp . (doi:10.2973/odp.proc.ir.199.101.2002).

Record type: Conference or Workshop Item (Paper)

Abstract

Ocean Drilling Program (ODP) Leg 199, "The Paleogene Equatorial Transect" (Sites 1215-1222), was designed to study the evolution of the equatorial Pacific current and wind system as Earth went from maximum Cenozoic warmth to initial Antarctic glaciations. The drilling program was primarily devoted to a transect along the 56- to 57-Ma crust, old enough to capture the Paleocene/Eocene boundary in the basal, more carbonate-rich sediments. The Leg 199 transect extends from a paleolatitude of ~4°N- ~4°S to encompass a relatively thick lower Eocene sediment section perhaps 8° north of the paleoequator. One site (1218) was also drilled on ~40-Ma crust to collect a near-equatorial sediment sequence from the middle Eocene to the Oligocene in order to investigate the transition in global climate from the Eocene "greenhouse" to Oligocene "icehouse."
The Pacific plate has drifted northward through Cenozoic time transporting biogenic sediments deposited under the high-productivity equatorial belt into a zone of extremely slow sediment (red clay) accumulation. Thus, the central tropical North Pacific Ocean is an ideal region in which to sample shallowly buried Paleogene sequences of equatorially deposited biogenic sediments. The thin Neogene cover of red clay in the area means that the entire Paleogene sediment section is potentially drillable by ODP advanced piston coring and extended core barrel methods.

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Published date: 2002

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Local EPrints ID: 41902
URI: http://eprints.soton.ac.uk/id/eprint/41902
ISBN: ISSN10962158
PURE UUID: 80a296de-babe-4b02-bae7-46da9645507c

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Date deposited: 16 Oct 2006
Last modified: 23 Jul 2020 16:48

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Contributors

Author: J. Backman
Author: W.H. Busch
Author: H.K. Coxall
Author: K. Faul
Author: P.A. Gaillot
Author: S.A. Hovan
Author: T.R. Janecek
Author: P. Knoop
Author: S. Kruse
Author: L. Lanci
Author: C.H. Lear
Author: M. Lyle
Author: T.C. Moore
Author: C.A. Nigrini
Author: H. Nishi
Author: R. Nomura
Author: R.D. Norris
Author: H. Pälike
Author: J.M. Parés
Author: L. Quintin
Author: I. Raffi
Author: B.R. Rea
Author: D.K. Rea
Author: T.H. Steiger
Author: A.K. Tripati
Author: M.D. Vanden Berg
Author: B.S. Wade
Author: P.A. Wilson
Editor: M. Lyle
Editor: P.A. Wilson
Editor: T.R. Janecek

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