Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207)

Taniel Danelian; Laurence Le Callonnec; Jochen Erbacher; David C. Mosher; Mitchell J. Malone; Debora Berti; Karen L. Bice; Helen Bostock; Hans Jürgen Brumsack; Astrid Forster; Felix Heidersdorf; Jorijntje Henderiks; Thomas J. Janecek; Christopher Junium; Ken MacLeod; Philip A. Meyers; Jörg H. Mutterlose; Hiroshi Nishi; Richard D. Norris; James G. Ogg; Matthew A. O'Regan; Brice Rea; Philip Sexton; Helen Sturt-Fredricks; Yusuke Suganuma; Jürgen W. Thurow; Paul A. Wilson; Sherwood W. Wise; Christine Glatz

doi:10.1016/j.crte.2005.01.011

Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207)

Taniel Danelian, Laurence Le Callonnec, Jochen Erbacher, David C. Mosher, Mitchell J. Malone, Debora Berti, Karen L. Bice, Helen Bostock, Hans Jürgen Brumsack, Astrid Forster, Felix Heidersdorf, Jorijntje Henderiks, Thomas J. Janecek, Christopher Junium, Ken MacLeod, Philip A. Meyers, Jörg H. Mutterlose, Hiroshi Nishi, Richard D. Norris, James G. OggMatthew A. O'Regan, Brice Rea, Philip Sexton, Helen Sturt-Fredricks, Yusuke Suganuma, Jürgen W. Thurow, Paul A. Wilson, Sherwood W. Wise, Christine Glatz

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Abstract

Five sites located on a bathymetric transect of the distal Demerara Rise were studied by ODP Leg 207. Albian sediments of essentially terrigenous nature (clay, siltstone, sandstone) are the oldest drilled stratigraphic levels and form apparently the top of the synrift sequence. They are overlain by Cenomanian to Santonian finely laminated black shales, rich in organic matter of marine origin, which accumulated on a thermally subsiding ramp. Early Campanian hiatuses are thought to be the result of final disjunction of Demerara Rise (South America) from Africa and the onset of deep water communication between the two Atlantic basins (south and central). The overlying Uppermost Cretaceous-Oligocene chalk includes rich and diversified calcareous plankton assemblages, as well as two radiolarian-rich intervals (Late Campanian and Middle Eocene). A complex erosional surface developed during the Late Oligocene-Early Miocene. Sedimentation was impeded since then on the intermediate and deep sites of Demerara Rise, possibly due to the action of deep submarine currents.

Original language	English (US)
Pages (from-to)	609-616
Number of pages	8
Journal	Comptes Rendus - Geoscience
Volume	337
Issue number	6
DOIs	https://doi.org/10.1016/j.crte.2005.01.011
State	Published - Apr 2005
Externally published	Yes

Keywords

Black shales
Cretaceous
Demerara
Tertiary
Tropical Atlantic

ASJC Scopus subject areas

Global and Planetary Change
General Earth and Planetary Sciences

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10.1016/j.crte.2005.01.011

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Danelian, T., Le Callonnec, L., Erbacher, J., Mosher, D. C., Malone, M. J., Berti, D., Bice, K. L., Bostock, H., Brumsack, H. J., Forster, A., Heidersdorf, F., Henderiks, J., Janecek, T. J., Junium, C., MacLeod, K., Meyers, P. A., Mutterlose, J. H., Nishi, H., Norris, R. D., ... Glatz, C. (2005). Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207). Comptes Rendus - Geoscience, 337(6), 609-616. https://doi.org/10.1016/j.crte.2005.01.011

Danelian, T, Le Callonnec, L, Erbacher, J, Mosher, DC, Malone, MJ, Berti, D, Bice, KL, Bostock, H, Brumsack, HJ, Forster, A, Heidersdorf, F, Henderiks, J, Janecek, TJ, Junium, C, MacLeod, K, Meyers, PA, Mutterlose, JH, Nishi, H, Norris, RD, Ogg, JG, O'Regan, MA, Rea, B, Sexton, P, Sturt-Fredricks, H, Suganuma, Y, Thurow, JW, Wilson, PA, Wise, SW & Glatz, C 2005, 'Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207)', Comptes Rendus - Geoscience, vol. 337, no. 6, pp. 609-616. https://doi.org/10.1016/j.crte.2005.01.011

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title = "Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207)",

abstract = "Five sites located on a bathymetric transect of the distal Demerara Rise were studied by ODP Leg 207. Albian sediments of essentially terrigenous nature (clay, siltstone, sandstone) are the oldest drilled stratigraphic levels and form apparently the top of the synrift sequence. They are overlain by Cenomanian to Santonian finely laminated black shales, rich in organic matter of marine origin, which accumulated on a thermally subsiding ramp. Early Campanian hiatuses are thought to be the result of final disjunction of Demerara Rise (South America) from Africa and the onset of deep water communication between the two Atlantic basins (south and central). The overlying Uppermost Cretaceous-Oligocene chalk includes rich and diversified calcareous plankton assemblages, as well as two radiolarian-rich intervals (Late Campanian and Middle Eocene). A complex erosional surface developed during the Late Oligocene-Early Miocene. Sedimentation was impeded since then on the intermediate and deep sites of Demerara Rise, possibly due to the action of deep submarine currents.",

keywords = "Black shales, Cretaceous, Demerara, Tertiary, Tropical Atlantic",

author = "Taniel Danelian and {Le Callonnec}, Laurence and Jochen Erbacher and Mosher, {David C.} and Malone, {Mitchell J.} and Debora Berti and Bice, {Karen L.} and Helen Bostock and Brumsack, {Hans J{\"u}rgen} and Astrid Forster and Felix Heidersdorf and Jorijntje Henderiks and Janecek, {Thomas J.} and Christopher Junium and Ken MacLeod and Meyers, {Philip A.} and Mutterlose, {J{\"o}rg H.} and Hiroshi Nishi and Norris, {Richard D.} and Ogg, {James G.} and O'Regan, {Matthew A.} and Brice Rea and Philip Sexton and Helen Sturt-Fredricks and Yusuke Suganuma and Thurow, {J{\"u}rgen W.} and Wilson, {Paul A.} and Wise, {Sherwood W.} and Christine Glatz",

note = "Funding Information: Cette {\'e}tude a {\'e}t{\'e} r{\'e}alis{\'e}e avec des {\'e}chantillons et/ou des donn{\'e}es mises {\`a} notre disposition par l'Ocean Drilling Program (ODP). L'ODP est financ{\'e} par la US National Science Foundation (NSF) et les pays adh{\'e}rents des Joint Oceanographic Institutions, Inc. (JOI). ODP-France a financ{\'e} la participation des embarquants fran{\c c}ais. H. Chamley est remerci{\'e} pour ses remarques constructives et A. Lethiers pour son aide dans la mise en forme des dessins.",

year = "2005",

month = apr,

doi = "10.1016/j.crte.2005.01.011",

language = "English (US)",

volume = "337",

pages = "609--616",

journal = "Comptes Rendus - Geoscience",

issn = "1631-0713",

publisher = "Academie des sciences",

number = "6",

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TY - JOUR

T1 - Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207)

AU - Danelian, Taniel

AU - Le Callonnec, Laurence

AU - Erbacher, Jochen

AU - Mosher, David C.

AU - Malone, Mitchell J.

AU - Berti, Debora

AU - Bice, Karen L.

AU - Bostock, Helen

AU - Brumsack, Hans Jürgen

AU - Forster, Astrid

AU - Heidersdorf, Felix

AU - Henderiks, Jorijntje

AU - Janecek, Thomas J.

AU - Junium, Christopher

AU - MacLeod, Ken

AU - Meyers, Philip A.

AU - Mutterlose, Jörg H.

AU - Nishi, Hiroshi

AU - Norris, Richard D.

AU - Ogg, James G.

AU - O'Regan, Matthew A.

AU - Rea, Brice

AU - Sexton, Philip

AU - Sturt-Fredricks, Helen

AU - Suganuma, Yusuke

AU - Thurow, Jürgen W.

AU - Wilson, Paul A.

AU - Wise, Sherwood W.

AU - Glatz, Christine

N1 - Funding Information: Cette étude a été réalisée avec des échantillons et/ou des données mises à notre disposition par l'Ocean Drilling Program (ODP). L'ODP est financé par la US National Science Foundation (NSF) et les pays adhérents des Joint Oceanographic Institutions, Inc. (JOI). ODP-France a financé la participation des embarquants français. H. Chamley est remercié pour ses remarques constructives et A. Lethiers pour son aide dans la mise en forme des dessins.

PY - 2005/4

Y1 - 2005/4

N2 - Five sites located on a bathymetric transect of the distal Demerara Rise were studied by ODP Leg 207. Albian sediments of essentially terrigenous nature (clay, siltstone, sandstone) are the oldest drilled stratigraphic levels and form apparently the top of the synrift sequence. They are overlain by Cenomanian to Santonian finely laminated black shales, rich in organic matter of marine origin, which accumulated on a thermally subsiding ramp. Early Campanian hiatuses are thought to be the result of final disjunction of Demerara Rise (South America) from Africa and the onset of deep water communication between the two Atlantic basins (south and central). The overlying Uppermost Cretaceous-Oligocene chalk includes rich and diversified calcareous plankton assemblages, as well as two radiolarian-rich intervals (Late Campanian and Middle Eocene). A complex erosional surface developed during the Late Oligocene-Early Miocene. Sedimentation was impeded since then on the intermediate and deep sites of Demerara Rise, possibly due to the action of deep submarine currents.

AB - Five sites located on a bathymetric transect of the distal Demerara Rise were studied by ODP Leg 207. Albian sediments of essentially terrigenous nature (clay, siltstone, sandstone) are the oldest drilled stratigraphic levels and form apparently the top of the synrift sequence. They are overlain by Cenomanian to Santonian finely laminated black shales, rich in organic matter of marine origin, which accumulated on a thermally subsiding ramp. Early Campanian hiatuses are thought to be the result of final disjunction of Demerara Rise (South America) from Africa and the onset of deep water communication between the two Atlantic basins (south and central). The overlying Uppermost Cretaceous-Oligocene chalk includes rich and diversified calcareous plankton assemblages, as well as two radiolarian-rich intervals (Late Campanian and Middle Eocene). A complex erosional surface developed during the Late Oligocene-Early Miocene. Sedimentation was impeded since then on the intermediate and deep sites of Demerara Rise, possibly due to the action of deep submarine currents.

KW - Black shales

KW - Cretaceous

KW - Demerara

KW - Tertiary

KW - Tropical Atlantic

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Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207)

Abstract

Keywords

ASJC Scopus subject areas

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