Hikaru Iwamori

Nonuniform Mantle Suture Beneath Northern Tibet Revealed by Helium Isotopes and Attention‐Based Machine Learning: Implications for Crustal Rheology and Growth of the Tibetan Plateau

Yue Wang, Xintian Li, Shuang Liao, Yi Wang et autres

Abstract The tectonic evolution of northern Tibet is crucial for unraveling the uplift and growth mechanisms of the Qinghai–Tibet Plateau. However, inconsistent geophysical observations have led to long‐standing controversies over whether the Asian lithosphere beneath northern Tibet is undergoing underthrusting or southward …

cn, jp, us, fr, gb (code pays fourni par la source)

Changes in crater lake chemistry after the 2021 eruption at Aso Volcano, Japan: insights from UAV-based hot water sampling

Hitomi Nakamura, Akihiko Yokoo, Hikaru Iwamori, Tatsuji Nishizawa et autres

• Development and application of a novel UAV-based hot lake water sampling technique. • High-temperature crater lake water chemistry at Aso Volcano soon after the 2021 eruption. • Anion and isotope variations indicate rapid transitions in the hydrothermal system. Several volcanoes in …

jp (code pays fourni par la source)

Large-scale polymetallic mineralization driven by long-lived magmatic-hydrothermal activity and subducted sediment influx: A case study from Toyoha, NE Japan

Mizuki Ishida, Yuki Hieda, Shuhei Araki, Koichiro Fujinaga et autres

Although there is increasing recognition that long-lived magmatic-hydrothermal systems are essential components of large-scale mineralization, relatively little is known about the source processes that enable such activity, especially in areas of average crustal thickness. To address this issue, we investigated the sources …

gb, jp (code pays fourni par la source)

Shallow Tectonic Tremors Reveal the Beginning of the Slab Window at the Chilean Triple Junction

Kellen Azúa, Satoshi Ide, Seiya Yano, Sergio Ruiz et autres

Abstract The subduction of active spreading centers is an unusual phenomenon along subduction zones. In southern Chile, the Nazca‐Antarctic spreading system (Chile Rise) subducts beneath the South America plate at the Chile Triple Junction (CTJ), forming the Patagonian slab window. The beginning …

cl, jp (code pays fourni par la source)

Geochemical Variations in Sedimentary Records of Oxygen‐Depleted Marine Environments in Representative Geological Periods: New Perspectives From an Independent Component Analysis

Masafumi Yano, Kazutaka Yasukawa, Kentaro Nakamura, Junichiro Kuroda et autres

Abstract Throughout the Phanerozoic, the oceans repeatedly became oxygen depleted and deposited marine sediments called black shales. The mechanisms responsible for the compositional variability of black shales deposited at different times and places, however, are not yet fully understood. Here, we performed …

jp (code pays fourni par la source)

Relationships Between Seismic Velocity Structures and Seismogenic Zone Decoded by Interpretable Machine Learning

Chunjie Zhang, Usui Yoshiya, B.T. Thomas Yeo, Aitaro Kato et autres

Seismic velocities, particularly P-wave (Vp) and S-wave (Vs) are critical for imaging the Earth's interior and understanding geodynamic processes. While the basic spatial relationships between seismic velocity structures and seismogenic zones have been extensively discussed, they are often described in a simplistic …

us, jp (code pays fourni par la source)

Long-Lived Magmatic-Hydrothermal Activity of the Toyoha Polymetallic Intermediate-Sulfidation Deposit, Japan Assisted by the Extra Sediment Input

Mizuki Ishida, Yuki Hieda, Shuhei Araki, Koichiro Fujinaga et autres

gb, jp (code pays fourni par la source)

Role of slab bending in the epithermal gold mineralization of South Kyushu, Japan

Mizuki Ishida, Ryuichi Shinjo, Masataka Aizawa, Hikaru Iwamori et autres

Bayesian Inversion of Lithology and Liquid Phase Parameters From Seismic Velocity and Electrical Conductivity in the Crust and Uppermost Mantle

Tatsu Kuwatani, Kenji Nagata, Toshimoto Sakai, Hikaru Iwamori

Abstract To deeply understand various geodynamic processes, including volcanic activities and earthquakes, it is essential to extract detailed information about Earth materials, such as lithology and geofluid, from geophysical, petrological, and geochemical observations of Earth's interior. We developed a Bayesian probabilistic framework …

jp (code pays fourni par la source)

High‐Dimensional Chemostratigraphy of Pelagic Clay in the Western North Pacific Ocean Revealed via an Unsupervised Clustering Approach

Kazutaka Yasukawa, Erika Tanaka, Takashi Miyazaki, Bogdan Stefanov Vaglarov et autres

Abstract Pelagic clay constitutes massive and apparently uniform lithology that limits the stratigraphic correlation between neighboring sediment core samples. Recent studies on the pelagic clay in the western North Pacific Ocean demonstrated that the bulk chemical composition of sediments constitutes multielemental chemostratigraphy, …

us, jp (code pays fourni par la source)

Compilation of the chemical composition data of pelagic clay around Minamitorishima Island in the western North Pacific Ocean

Kazutaka Yasukawa, Erika Tanaka, Takashi Miyazaki, Bogdan Stefanov Vaglarov et autres

A compilation of bulk chemical composition data of pelagic clay around Minamitorishima Island in the western North Pacific Ocean. Original data were published in the cited articles (shown in Data source column). This is a supplementary dataset for "High-dimensional chemostratigraphy of pelagic …

jp (code pays fourni par la source)

Compilation of the chemical composition data of pelagic clay around Minamitorishima Island in the western North Pacific Ocean

Kazutaka Yasukawa, Erika Tanaka, Takashi Miyazaki, Bogdan Stefanov Vaglarov et autres

A compilation of bulk chemical composition data of pelagic clay around Minamitorishima Island in the western North Pacific Ocean. Original data were published in the cited articles (shown in Data source column). This is a supplementary dataset for "High-dimensional chemostratigraphy of pelagic …

jp (code pays fourni par la source)