Résultats préliminaires sur la sédimentation pélagique de l'Atlantique tropical au Crétacé et au Tertiaire (plateau de Demerara, Leg ODP 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

Résultats préliminaires sur la sédimentation pélagique de l'Atlantique tropical au Crétacé et au Tertiaire (plateau de Demerara, Leg ODP 207)

Translated title of the contribution: 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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

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.

Translated title of the contribution	Preliminary results on Cretaceous-Tertiary tropical Atlantic pelagic sedimentation (Demerara Rise, ODP Leg 207)
Original language	French
Pages (from-to)	609-616
Number of pages	8
Journal	Comptes Rendus. Ge´oscience
Volume	337
Issue number	6
DOIs	https://doi.org/10.1016/j.crte.2005.01.011
Publication status	Published - 1 Apr 2005
Externally published	Yes

Keywords

Black shales
Cretaceous
Demerara
Tertiary
Tropical Atlantic

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.crte.2005.01.011Licence: CC BY

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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). Résultats préliminaires sur la sédimentation pélagique de l'Atlantique tropical au Crétacé et au Tertiaire (plateau de Demerara, Leg ODP 207). Comptes Rendus. Ge´oscience, 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, 'Résultats préliminaires sur la sédimentation pélagique de l'Atlantique tropical au Crétacé et au Tertiaire (plateau de Demerara, Leg ODP 207)', Comptes Rendus. Ge´oscience, vol. 337, no. 6, pp. 609-616. https://doi.org/10.1016/j.crte.2005.01.011

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title = "R{\'e}sultats pr{\'e}liminaires sur la s{\'e}dimentation p{\'e}lagique de l'Atlantique tropical au Cr{\'e}tac{\'e} et au Tertiaire (plateau de Demerara, Leg ODP 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",

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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

PY - 2005/4/1

Y1 - 2005/4/1

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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U2 - 10.1016/j.crte.2005.01.011

DO - 10.1016/j.crte.2005.01.011

M3 - Article

AN - SCOPUS:20244372546

SN - 1631-0713

VL - 337

SP - 609

EP - 616

JO - Comptes Rendus. Ge´oscience

JF - Comptes Rendus. Ge´oscience

IS - 6

ER -

Résultats préliminaires sur la sédimentation pélagique de l'Atlantique tropical au Crétacé et au Tertiaire (plateau de Demerara, Leg ODP 207)

Abstract

Keywords

UN SDGs

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