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

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
	Lanci, Luca 1,2; Zanella, Elena 2,3; Jovane, Luigi 4; Galeotti, Simone ; Alonso-Garcia, Montserrat 5,6; Alvarez-Zarikian, Carlos A.7; Bejugam, Nagender Nath 19; Betzler, Christian 8; Bialik, Or M.9; Blattler, Clara L.10
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2019-11
卷号	533
关键词	Paleomagnetism Pliocene magnetic stratigraphy Anisotropy of isothermal remanent magnetization Currents strength Monsoon
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2019.109283
英文摘要	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.
WOS关键词	INDIAN-OCEAN ; POLAR WANDER ; SUSCEPTIBILITY ; ORIENTATION ; ANISOTROPY ; REMANENCE ; CURRENTS ; UPLIFT ; FLOW
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000487174100027
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/30142]
专题	自然资源部第一海洋研究所
通讯作者	Lanci, Luca
作者单位	1.Univ Urbino, Dept Pure & Appl Sci, Via S Chiara 27, I-61029 Urbino, Italy 2.Alpine Lab Paleomagnetism ALP CIMaN, Via GU Massa 6, I-12016 Peveragno, Italy 3.Univ Turin, Dept Earth Sci, Via Valperga Caluso 35, I-10125 Turin, Italy 4.Univ Sao Paulo, Inst Oceanog, Praca Oceanog 191, BR-05508120 Selo Paulo, SP, Brazil 5.IPMA, Div Geol & Georecursos Marinhos, Avenida Brasilia 6, P-1449006 Lisbon, Portugal 6.Univ Algarve, Ctr Ciencias Mar CCMAR, Faro, Portugal 7.Texas A&M Univ, Int Ocean Discovery Program, 1000 Discovery Dr, College Stn, TX 77845 USA 8.Univ Hamburg, CEN, Inst Geol, Bundesstr 55, D-20146 Hamburg, Germany 9.Univ Haifa, Leon H Chamey Sch Marine Sci, Dr Moses Strauss Dept Marine Geosci, IL-31905 Carmel, Israel 10.Univ Chicago, Dept Geophys Sci, 5734 S Ellis Ave, Chicago, IL 60637 USA
推荐引用方式 GB/T 7714	Lanci, Luca,Zanella, Elena,Jovane, Luigi,et al. Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,533.
APA	Lanci, Luca.,Zanella, Elena.,Jovane, Luigi.,Galeotti, Simone.,Alonso-Garcia, Montserrat.,...&Young, Jeremy R..(2019).Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,533.
MLA	Lanci, Luca,et al."Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 533(2019).