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<datestamp>2018-01-11</datestamp>
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<title lang=en>Palaeointensity determinations and rock magnetic properties on basalts from Shatsky Rise: new evidence for aMesozoic dipole low</title>
<creator>Carvallo, C.</creator>
<creator>Camps, P.</creator>
<creator>Ooga, M.</creator>
<creator>Fanjat, G.</creator>
<creator>Sager, W.W. </creator>
<contributor>Institut de minéralogie et de physique des milieux condensés (IMPMC) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Manteau et Interfaces ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Doshisha University ; Doshisha University</contributor>
<contributor>Department of Oceanography, Texas A&M University ; Department of Oceanography</contributor>
<description>International audience</description>
<source>ISSN: 0956-540X</source>
<source>EISSN: 1365-246X</source>
<source>Geophysical Journal International</source>
<publisher>Oxford University Press (OUP)</publisher>
<identifier>hal-00795491</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00795491</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00795491</source>
<source>Geophysical Journal International, Oxford University Press (OUP), 2013, 192, pp.986-999. 〈10.1093/gji/ggs100〉</source>
<identifier>DOI : 10.1093/gji/ggs100</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggs100</relation>
<language>en</language>
<subject lang=en>Palaeointensity</subject>
<subject lang=en>Rock and mineral magnetism</subject>
<subject lang=en>Ocean drilling</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>IODP Expedition 324 cored igneous rocks from Shatsky Rise, an oceanic plateau in the northwest Pacific Ocean that formed mainly during late Jurassic and Early Cretaceous times. We selected 60 samples from 3 different holes for Thellier-Thellier palaeointensity determinations. Induced and remanent magnetization curves measured at low- and high-temperature suggest a diverse and complex magnetic mineralogy, with large variations in Ti content and oxidation state. Hysteresis and FORC measurements show that most samples contain singledomain magnetic grains. After carrying out the palaeointensity determinations, only 9 samples satisfied all reliability criteria. These gave palaeointensity values between 16.5 and 21.5 μT, which correspond to average VDM values of (4.9 ± 0.2) × 1022 Am2 for an estimated age of 140-142 Ma. This value is lower than that for the recent field, which agrees with the hypothesis of a Mesozoic Dipole Low.</description>
<date>2013</date>
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