High mantle seismic P-wave speeds as a signature for gravitational spreading of superplumes

• Main Authors: Stern, Tim, Lamb, Simon, Moore, James Daniel Paul, Okaya, David, Hochmuth, Katharina
• 其他作者: Earth Observatory of Singapore
• 格式: Article
• 語言: English
• 出版: 2020
• 主題: Science::Geology; Anisotropy; Superplumes
• 在線閱讀: https://hdl.handle.net/10356/144978
• 機構: Nanyang Technological University

New passive- and active-source seismic experiments reveal unusually high mantle P-wave speeds that extend beneath the remnants of the world’s largest known large igneous province, making up the 120-million-year-old Ontong-Java-Manihiki-Hikurangi Plateau. Sub-Moho Pn phases of ~8.8 ± 0.2 km/s are res...