Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system

Luca Lanci; E. Zanella; L. Jovane; Simone Galeotti; Montserrat Alonso-García; Carlos A. Alvarez-Zarikian; Nagender Nath Bejugam; Christian Betzler; Or M. Bialik; Clara L. Blättler; Gregor P. Eberli; Junhua Adam Guo; Sébastien Haffen; S. Horozal; Mayuri Inoue; Dick Kroon; Juan Carlos Laya; Anna Ling Hui Mee; Thomas Lüdmann; Masatoshi Nakakuni; K. Niino; Loren M. Petruny; Santi D. Pratiwi; John J.G. Reijmer; Jesús Reolid; Angela L. Slagle; Craig R. Sloss; X. Su; Peter K. Swart; James D. Wright; Zhengquan Yao; Jeremy R. Young

doi:10.1016/j.palaeo.2019.109283

Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system

Luca Lanci, E. Zanella, L. Jovane, Simone Galeotti, Montserrat Alonso-García, Carlos A. Alvarez-Zarikian, Nagender Nath Bejugam, Christian Betzler, Or M. Bialik, Clara L. Blättler, Gregor P. Eberli, Junhua Adam Guo, Sébastien Haffen, S. Horozal, Mayuri Inoue, Dick Kroon, Juan Carlos Laya, Anna Ling Hui Mee, Thomas Lüdmann, Masatoshi NakakuniK. Niino, Loren M. Petruny, Santi D. Pratiwi, John J.G. Reijmer, Jesús Reolid, Angela L. Slagle, Craig R. Sloss, X. Su, Peter K. Swart, James D. Wright, Zhengquan Yao, Jeremy R. Young

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

We report a study of the magnetic stratigraphy and the anisotropy of isothermal remanent magnetization of Pliocene sediments from International Ocean Discovery Program (IODP) Site U1467 drilled in the Maldives platform (Indian Ocean) during Exp. 359. Magnetic stratigraphy gives a precise record of geomagnetic reversals of the early Pliocene from approximately 5.3 Ma to 3.1 Ma providing a detailed age model in an interval where the biostratigraphic record is scarce. We use the anisotropy of isothermal remanent magnetization (AIRM) to investigate the statistical orientation of fine magnetic particles and provide data on the strength and direction of bottom currents during the early Pliocene. The strength of bottom currents recorded by the AIRM, shows a prominent increase at the top of Chron C3n.1n (about 4.2 Ma), and the current direction (NE - SW) is consistent with that of modern instrumental measurements. Since bottom currents in the Maldives are driven by the monsoon, we speculate that the 4.2 Ma increase of bottom currents could mark the onset of the present-day setting, probably related to the coeval uplift phase of the Himalayan plateau.

Original language	English
Article number	109283
Journal	Palaeogeography, Palaeoclimatology, Palaeoecology
Volume	533
DOIs	https://doi.org/10.1016/j.palaeo.2019.109283
Publication status	Published - Nov 1 2019

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Keywords

Anisotropy of isothermal remanent magnetization
Currents strength
Monsoon
Paleomagnetism
Pliocene magnetic stratigraphy

ASJC Scopus subject areas

Oceanography
Ecology, Evolution, Behavior and Systematics
Earth-Surface Processes
Palaeontology

Cite this

Lanci, L., Zanella, E., Jovane, L., Galeotti, S., Alonso-García, M., Alvarez-Zarikian, C. A., Bejugam, N. N., Betzler, C., Bialik, O. M., Blättler, C. L., Eberli, G. P., Guo, J. A., Haffen, S., Horozal, S., Inoue, M., Kroon, D., Laya, J. C., Mee, A. L. H., Lüdmann, T., ... Young, J. R. (2019). Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system. Palaeogeography, Palaeoclimatology, Palaeoecology, 533, [109283]. https://doi.org/10.1016/j.palaeo.2019.109283

Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system. / Lanci, Luca; Zanella, E.; Jovane, L.; Galeotti, Simone; Alonso-García, Montserrat; Alvarez-Zarikian, Carlos A.; Bejugam, Nagender Nath; Betzler, Christian; Bialik, Or M.; Blättler, Clara L.; Eberli, Gregor P.; Guo, Junhua Adam; Haffen, Sébastien; Horozal, S.; Inoue, Mayuri; Kroon, Dick; Laya, Juan Carlos; Mee, Anna Ling Hui; Lüdmann, Thomas; Nakakuni, Masatoshi; Niino, K.; Petruny, Loren M.; Pratiwi, Santi D.; Reijmer, John J.G.; Reolid, Jesús; Slagle, Angela L.; Sloss, Craig R.; Su, X.; Swart, Peter K.; Wright, James D.; Yao, Zhengquan; Young, Jeremy R.

In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 533, 109283, 01.11.2019.

Research output: Contribution to journal › Article

Lanci, L, Zanella, E, Jovane, L, Galeotti, S, Alonso-García, M, Alvarez-Zarikian, CA, Bejugam, NN, Betzler, C, Bialik, OM, Blättler, CL, Eberli, GP, Guo, JA, Haffen, S, Horozal, S, Inoue, M, Kroon, D, Laya, JC, Mee, ALH, Lüdmann, T, Nakakuni, M, Niino, K, Petruny, LM, Pratiwi, SD, Reijmer, JJG, Reolid, J, Slagle, AL, Sloss, CR, Su, X, Swart, PK, Wright, JD, Yao, Z & Young, JR 2019, 'Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system', Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 533, 109283. https://doi.org/10.1016/j.palaeo.2019.109283

Lanci, Luca ; Zanella, E. ; Jovane, L. ; Galeotti, Simone ; Alonso-García, Montserrat ; Alvarez-Zarikian, Carlos A. ; Bejugam, Nagender Nath ; Betzler, Christian ; Bialik, Or M. ; Blättler, Clara L. ; Eberli, Gregor P. ; Guo, Junhua Adam ; Haffen, Sébastien ; Horozal, S. ; Inoue, Mayuri ; Kroon, Dick ; Laya, Juan Carlos ; Mee, Anna Ling Hui ; Lüdmann, Thomas ; Nakakuni, Masatoshi ; Niino, K. ; Petruny, Loren M. ; Pratiwi, Santi D. ; Reijmer, John J.G. ; Reolid, Jesús ; Slagle, Angela L. ; Sloss, Craig R. ; Su, X. ; Swart, Peter K. ; Wright, James D. ; Yao, Zhengquan ; Young, Jeremy R. / Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system. In: Palaeogeography, Palaeoclimatology, Palaeoecology. 2019 ; Vol. 533.

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title = "Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system",

abstract = "We report a study of the magnetic stratigraphy and the anisotropy of isothermal remanent magnetization of Pliocene sediments from International Ocean Discovery Program (IODP) Site U1467 drilled in the Maldives platform (Indian Ocean) during Exp. 359. Magnetic stratigraphy gives a precise record of geomagnetic reversals of the early Pliocene from approximately 5.3 Ma to 3.1 Ma providing a detailed age model in an interval where the biostratigraphic record is scarce. We use the anisotropy of isothermal remanent magnetization (AIRM) to investigate the statistical orientation of fine magnetic particles and provide data on the strength and direction of bottom currents during the early Pliocene. The strength of bottom currents recorded by the AIRM, shows a prominent increase at the top of Chron C3n.1n (about 4.2 Ma), and the current direction (NE - SW) is consistent with that of modern instrumental measurements. Since bottom currents in the Maldives are driven by the monsoon, we speculate that the 4.2 Ma increase of bottom currents could mark the onset of the present-day setting, probably related to the coeval uplift phase of the Himalayan plateau.",

keywords = "Anisotropy of isothermal remanent magnetization, Currents strength, Monsoon, Paleomagnetism, Pliocene magnetic stratigraphy",

author = "Luca Lanci and E. Zanella and L. Jovane and Simone Galeotti and Montserrat Alonso-Garc{\'i}a and Alvarez-Zarikian, {Carlos A.} and Bejugam, {Nagender Nath} and Christian Betzler and Bialik, {Or M.} and Bl{\"a}ttler, {Clara L.} and Eberli, {Gregor P.} and Guo, {Junhua Adam} and S{\'e}bastien Haffen and S. Horozal and Mayuri Inoue and Dick Kroon and Laya, {Juan Carlos} and Mee, {Anna Ling Hui} and Thomas L{\"u}dmann and Masatoshi Nakakuni and K. Niino and Petruny, {Loren M.} and Pratiwi, {Santi D.} and Reijmer, {John J.G.} and Jes{\'u}s Reolid and Slagle, {Angela L.} and Sloss, {Craig R.} and X. Su and Swart, {Peter K.} and Wright, {James D.} and Zhengquan Yao and Young, {Jeremy R.}",

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AU - Lanci, Luca

AU - Zanella, E.

AU - Jovane, L.

AU - Galeotti, Simone

AU - Alonso-García, Montserrat

AU - Alvarez-Zarikian, Carlos A.

AU - Bejugam, Nagender Nath

AU - Betzler, Christian

AU - Bialik, Or M.

AU - Blättler, Clara L.

AU - Eberli, Gregor P.

AU - Guo, Junhua Adam

AU - Haffen, Sébastien

AU - Horozal, S.

AU - Inoue, Mayuri

AU - Kroon, Dick

AU - Laya, Juan Carlos

AU - Mee, Anna Ling Hui

AU - Lüdmann, Thomas

AU - Nakakuni, Masatoshi

AU - Niino, K.

AU - Petruny, Loren M.

AU - Pratiwi, Santi D.

AU - Reijmer, John J.G.

AU - Reolid, Jesús

AU - Slagle, Angela L.

AU - Sloss, Craig R.

AU - Su, X.

AU - Swart, Peter K.

AU - Wright, James D.

AU - Yao, Zhengquan

AU - Young, Jeremy R.

PY - 2019/11/1

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N2 - We report a study of the magnetic stratigraphy and the anisotropy of isothermal remanent magnetization of Pliocene sediments from International Ocean Discovery Program (IODP) Site U1467 drilled in the Maldives platform (Indian Ocean) during Exp. 359. Magnetic stratigraphy gives a precise record of geomagnetic reversals of the early Pliocene from approximately 5.3 Ma to 3.1 Ma providing a detailed age model in an interval where the biostratigraphic record is scarce. We use the anisotropy of isothermal remanent magnetization (AIRM) to investigate the statistical orientation of fine magnetic particles and provide data on the strength and direction of bottom currents during the early Pliocene. The strength of bottom currents recorded by the AIRM, shows a prominent increase at the top of Chron C3n.1n (about 4.2 Ma), and the current direction (NE - SW) is consistent with that of modern instrumental measurements. Since bottom currents in the Maldives are driven by the monsoon, we speculate that the 4.2 Ma increase of bottom currents could mark the onset of the present-day setting, probably related to the coeval uplift phase of the Himalayan plateau.

AB - We report a study of the magnetic stratigraphy and the anisotropy of isothermal remanent magnetization of Pliocene sediments from International Ocean Discovery Program (IODP) Site U1467 drilled in the Maldives platform (Indian Ocean) during Exp. 359. Magnetic stratigraphy gives a precise record of geomagnetic reversals of the early Pliocene from approximately 5.3 Ma to 3.1 Ma providing a detailed age model in an interval where the biostratigraphic record is scarce. We use the anisotropy of isothermal remanent magnetization (AIRM) to investigate the statistical orientation of fine magnetic particles and provide data on the strength and direction of bottom currents during the early Pliocene. The strength of bottom currents recorded by the AIRM, shows a prominent increase at the top of Chron C3n.1n (about 4.2 Ma), and the current direction (NE - SW) is consistent with that of modern instrumental measurements. Since bottom currents in the Maldives are driven by the monsoon, we speculate that the 4.2 Ma increase of bottom currents could mark the onset of the present-day setting, probably related to the coeval uplift phase of the Himalayan plateau.

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KW - Paleomagnetism

KW - Pliocene magnetic stratigraphy

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10.1016/j.palaeo.2019.109283