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Recent Advances in Geo-, Paleo- and Rock- Magnetism

This special issue is based on Session S-EM18 "General Contributions in Geomagnetism, Paleomagnetism, and Rock magnetism" held during the Japan Geoscience Union – American Geophysical Union (JpGU-AGU) 2017 Meeting (20 – 25 May in Chiba, Japan). Vast and accelerating developments seen in current Earth science investigations could not be realized without knowledge of Earth's magnetic field. Recent advances in rock magnetism have facilitated new findings in paleomagnetism. This issue focuses especially on rock magnetism and paleomagnetism as a means of understanding the past variation of Earth’s magnetic field. We welcome contributions related to the geodynamo, present and past geomagnetic behavior, fundamental rock magnetic properties, and paleoclimatic change and tectonic processes revealed by magnetic methods. We also encourage contributions related to new methods, software and instruments that are useful for the above mentioned studies.

Edited by: John Tarduno, Hirokuni Oda, Yuhji Yamamoto, Chuang Xuan, Ioan Lascu, Koji Fukuma

  1. Content type: Full paper

    The Kairei (KHF) and Yokoniwa hydrothermal fields (YHF) are hosted in mafic as well as ultramafic rocks distributed at an off-axis volcanic knoll of the Central Indian Ridge. Despite intensive investigations, ...

    Authors: Masakazu Fujii and Kyoko Okino

    Citation: Earth, Planets and Space 2018 70:188

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  2. Content type: Technical report

    Chemical demagnetization is not preferred as a demagnetizing method in paleomagnetism because strong acids are cumbersome to handle and require considerable time compared to alternating field and thermal demag...

    Authors: Chisato Anai, Nobutatsu Mochizuki and Hidetoshi Shibuya

    Citation: Earth, Planets and Space 2018 70:184

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  3. Content type: Frontier letter

    Investigations of superchrons are the key to understanding long-term changes of the geodynamo and the mantle’s controlling role. Granitic rocks could be good recorders of deep-time geomagnetic field behavior, ...

    Authors: Chie Kato, Masahiko Sato, Yuhji Yamamoto, Hideo Tsunakawa and Joseph L. Kirschvink

    Citation: Earth, Planets and Space 2018 70:176

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  4. Content type: Express Letter

    Hydrogenetic ferromanganese crusts (hereafter referred to as “crusts”) on Pacific seamounts are formed by the precipitation of iron–manganese oxides from seawater on volcanic and biogenic substrate rocks. As c...

    Authors: Hirokuni Oda, Yoshio Nakasato and Akira Usui

    Citation: Earth, Planets and Space 2018 70:165

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  5. Content type: Full paper

    Previous studies have compiled relative paleointensity data for the last 2–3 Ma from individual paleomagnetic records obtained from marine sediment cores. These records have mostly been obtained by pass-throug...

    Authors: Yuhji Yamamoto, Toshitsugu Yamazaki and Toshiya Kanamatsu

    Citation: Earth, Planets and Space 2018 70:160

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  6. Content type: Full paper

    Magnetic mineral inclusions in silicates are widespread in sediments as well as in igneous rocks. Because they are isolated from surrounding environment, they have potential to preserve original magnetic signa...

    Authors: Yoichi Usui, Takaya Shimono and Toshitsugu Yamazaki

    Citation: Earth, Planets and Space 2018 70:153

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  7. Content type: Full paper

    Paleomagnetic information reconstructed from archeological materials can be utilized to estimate the archeological age of excavated relics, in addition to revealing the geomagnetic secular variation and core d...

    Authors: Yu Kitahara, Yuhji Yamamoto, Masao Ohno, Yoshihiro Kuwahara, Shuichi Kameda and Tadahiro Hatakeyama

    Citation: Earth, Planets and Space 2018 70:79

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  8. Content type: Full paper

    Paleomagnetic and rock magnetic investigations were performed on a 64-cm-thick section of nonmarine unconsolidated muddy sediment from the Gosan Formation on Jeju Island, Korea. This sediment was recently date...

    Authors: Hyeon-Seon Ahn, Young Kwan Sohn, Jin-Young Lee and Jin Cheul Kim

    Citation: Earth, Planets and Space 2018 70:78

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  9. Content type: Full paper

    Geomagnetic excursions during Brunhes epoch have been brought to the forefront topic in paleomagnetic study, as they provide key information about Earth’s interior dynamics and could serve as another tool for ...

    Authors: Guanhua Li, Dunsheng Xia, Erwin Appel, Youjun Wang, Jia Jia and Xiaoqiang Yang

    Citation: Earth, Planets and Space 2018 70:44

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