Article
Geochemistry & Geophysics
Jianqiang Kang, Jiangtao Han, Rui Gao, Lijia Liu, Zhonghua Xin, Fanwen Meng, Zhenyu Guo, Tianqi Wang
Summary: This study reveals the presence of large-scale conductive anomalies and a rheological channel beneath the Jinsha River suture in the northern Tibetan Plateau. The convergence of the Indian and Asian plates may be the driving mechanism for the reactivation of this suture, resulting in enhanced convection in the mantle and subsequent melting of the crust. These findings provide valuable insights into the geodynamic evolution of the northern Tibetan Plateau and contribute to our understanding of continental convergence processes.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Multidisciplinary Sciences
Amane Tajika, Naoki Morimoto, Neil H. Landman
Summary: Assessing the taxonomic importance of the suture line in shelled cephalopods is crucial for understanding their diversity. The study on Nautilus and Allonautilus reveals that conch geometry is useful in distinguishing species and genetically distinct populations can be identified based on this feature. The results are applicable to closely related fossil cephalopods but may not extend to more distantly related forms like ammonoids.
SCIENTIFIC REPORTS
(2021)
Article
Geology
Keith Priestley, Tak Ho, Dan McKenzie
Summary: New evidence from seismic tomography indicates a unique mineral fabric in the thick mantle lithosphere beneath ancient continental cratons, shedding light on the formation of these structures. This mineral fabric, revealed through surface-wave tomography, suggests a vertical alignment of olivine crystals at depths of -150 km within cratonic continental-lithosphere roots, likely a remnant from craton formation. Geochemical and petrological studies further support the stability of cratonic mantle roots due to reduced density caused by melt removal at shallower depths. This seismological fabric at -150 km provides evidence of the shortening event that created the cratonic roots.
Article
Multidisciplinary Sciences
Simon L. Klemperer, Ping Zhao, Colin J. Whyte, Thomas H. Darrah, Laura J. Crossey, Karl E. Karlstrom, Tianze Liu, Carmen Winn, David R. Hilton, Lin Ding
Summary: This study uses helium isotope data to reveal the geometry between the crustal plate and mantle in the continental collision of the Himalaya and Tibetan Plateau, answering the question of whether the crustal plate underplates or subducts into the mantle. The results show that the crustal plate underplates and comes into contact with the mantle at greater depths. The study also identifies a helium isotope boundary between the Indian crust and the Tibetan Plateau, which helps explain conflicting seismic interpretations.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geology
Yuxiao Chen, Ying Cui, Shuguang Song, Kai Wu, Weidong Sun, Tangfu Xiao
Summary: This study presents data on the middle to late Cambrian Tuole and Dabaishitou granitic plutons in the western segment of the North Qilian suture zone, showing that these granitoids crystallized at around 509-492 Ma and were mainly derived from slab-derived fluids and asthenospheric mantle melts prior to melting. The mineralogical, petrological, and geochemical features of the granitoids provide insights into the crust-mantle interaction during subduction processes.
INTERNATIONAL GEOLOGY REVIEW
(2021)
Article
Geochemistry & Geophysics
F. Salajegheh, J. C. Afonso
Summary: Geoid anomalies provide crucial information about the Earth's internal density structure. Researchers have developed a representative upper mantle geoid model using spherical harmonic analysis, showing significant contributions from degrees 5 and 6.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geosciences, Multidisciplinary
Sonia Ouadahi, Abderrahmane Bendaoud, Jean-Louis Bodinier, Jean-Marie Dautria, Alain Vauchez, El-Hocine Fettous, Olivier Alard
Summary: This study investigates the assembly of the West Gondwana supercontinent and provides evidence for the formation of the Hoggar shield. Petro-geochemical and geochronological analyses of serpentinite lenses and metasomatic chloritite reveal the formation mechanisms and ages of these rocks. The findings support the existence of a significant suture zone, contributing to our understanding of the evolution of the Gondwana supercontinent.
PRECAMBRIAN RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Haiying Gao, Cong Li
Summary: A high-resolution shear velocity model of eastern North America was constructed using full-wave ambient noise simulation and inversion integrating onshore and offshore seismic datasets, revealing large lateral variations of lithosphere thickness, strong low-velocity anomalies underneath the thinner lithosphere, and multiple low-velocity layers within the continental lithosphere. The results suggest that multiple tectonic processes and metasomatism have played significant roles in the formation and modification of the present mantle lithosphere beneath eastern North America.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
David J. Peterman, Kathleen A. Ritterbush, Charles N. Ciampaglio, Erynn H. Johnson, Shinya Inoue, Tomoyuki Mikami, Thomas J. Linn
Summary: The study shows that the relationship between septal complexity of ammonoids and liquid retention capacity through surface tension provides a simple yet powerful functional explanation for buoyancy manipulation.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
Junji Yamamoto, Mark D. Kurz
Summary: The study investigates mantle noble gas abundance ratios by analyzing data from mid-ocean ridge basalts (MORB) and high 3He/4He ocean island basalts (OIB), suggesting that the OIB source may have less degassed primitive material compared to the MORB source. The contrast in He/Ne abundance ratios between MORB and OIB sources is a key constraint on mantle evolution models, reflecting multiple diffusive fractionation stages in Earth history.
PHYSICS OF THE EARTH AND PLANETARY INTERIORS
(2022)
Article
Dentistry, Oral Surgery & Medicine
R. Xu, Y. Liu, Y. Zhou, W. Lin, Q. Yuan, X. Zhou, Y. Yang
Summary: This study investigates the role of the Gnas gene in calvaria development in mice and reveals that loss of Gnas leads to craniosynostosis and activation of Hedgehog signaling is associated with cartilage ossification. Reduction of Hedgehog signaling could be a potential intervention to reduce skull deformity in craniosynostosis.
JOURNAL OF DENTAL RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Hideharu Kuwahara, Shoichi Itoh, Akimasa Suzumura, Ryoichi Nakada, Tetsuo Irifune
Summary: The study suggests that the carbon contents in Earth's mantle, higher than experimental predictions, may have been established during the main accretion phase from a magma ocean made of chondritic materials.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Biodiversity Conservation
Amane Tajika, Neil H. Landman, Hiromichi Koyasu, Amy Broussard, Lian Anderson, Kenji Ikuno
Summary: This study documents 24 specimens of Rhyncholites and 12 specimens of Conchorhynchs from the Upper Cretaceous Mount Laurel Formation in Delaware. Morphometric analysis reveals that some morphological parameters in Rhyncholites are correlated with size, and the specimens exhibit high intraspecific variation.
AMERICAN MUSEUM NOVITATES
(2023)
Article
Geochemistry & Geophysics
Yangfan Deng, Yi-Gang Xu, Yun Chen
Summary: Gravity lineaments are well recognized along plate boundaries and in the interiors of oceanic plates, but the formation mechanism of intracontinental gravity lineaments remains poorly understood. This study on the North-South Gravity Lineament (NSGL) reveals that crustal thickness is the dominant factor in its formation, with lithospheric composition also playing a role. The eastern part of the North China Craton experienced lithospheric thinning and mantle replacement during the late Mesozoic due to the subduction of the Paleo-Pacific plate, leading to the persistence of the NSGL.
Article
Multidisciplinary Sciences
Wenzhong Wang, Jiachao Liu, Feng Zhu, Mingming Li, Susannah M. Dorfman, Jie Li, Zhongqing Wu
Summary: Recent studies have shown that the presence of Fe3+-rich bridgmanite in the lowermost mantle can explain the formation of LLSVPs and have significant implications for the storage of redox-sensitive elements in the deep Earth.
NATURE COMMUNICATIONS
(2021)
Article
Biology
Shigeru Kondo
JOURNAL OF THEORETICAL BIOLOGY
(2017)
Article
Cell Biology
Risa Sawada, Toshihiro Aramaki, Shigeru Kondo
Article
Developmental Biology
Haruhiko Adachi, Keisuke Matsuda, Teruyuki Niimi, Yasuhiro Inoue, Shigeru Kondo, Hiroki Gotoh
MECHANISMS OF DEVELOPMENT
(2018)
Article
Multidisciplinary Sciences
Ryo Mizuuchi, Hiroshi Kawase, Hirofumi Shin, Daisuke Iwai, Shigeru Kondo
SCIENTIFIC REPORTS
(2018)
Article
Developmental Biology
Toshihiro Aramaki, Shigeru Kondo
DEVELOPMENTAL BIOLOGY
(2020)
Article
Anatomy & Morphology
Misaki Sakashita, Mao Sato, Shigeru Kondo
JOURNAL OF MORPHOLOGY
(2019)
Article
Developmental Biology
Yuu Usui, Toshihiro Aramaki, Shigeru Kondo, Masakatsu Watanabe
Article
Cell Biology
Junpei Kuroda, Takeshi Itabashi, Atsuko H. Iwane, Toshihiro Aramaki, Shigeru Kondo
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2020)
Article
Biology
Shin-Ichiro Ei, Hiroshi Ishii, Shigeru Kondo, Takashi Miura, Yoshitaro Tanaka
Summary: The proposed method simplifies complex reaction-diffusion networks into effective equations with reduced integral kernels, showing the potential for different systems to exhibit similar spatial and temporal patterns.
JOURNAL OF THEORETICAL BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Keisuke Matsuda, Hiroki Gotoh, Haruhiko Adachi, Yasuhiro Inoue, Shigeru Kondo
Summary: The study reveals that the morphology of beetle horns is encoded in the primordial folding pattern, with different regions contributing to branching, elongation, and angular change. Computational methods used in the research can be applied to the study of morphology in other exoskeletal animals.
SCIENTIFIC REPORTS
(2021)
Article
Developmental Biology
Hibiki Nakagawa, Junpei Kuroda, Toshihiro Aramaki, Shigeru Kondo
Summary: Actinotrichia play a crucial role in the formation of fish caudal fins by providing physical support in the dorsal-ventral direction. Lack of actinotrichia results in disordered fin tip shape and oval-shaped fish body.
DEVELOPMENTAL BIOLOGY
(2022)
Article
Biochemical Research Methods
Misaki Sakashita, Shintaro Yamasaki, Kentaro Yaji, Atsushi Kawamoto, Shigeru Kondo
Summary: The shape of bones adapts to external loads, with increased loads inducing bone synthesis and decreased loads inducing bone resorption. Simulation using topology optimization can successfully reproduce the internal trabecular structure of bones, aiding in the study of bone diseases. Few attempts have been made to simulate the external structure of bones, but it can be achieved through topology optimization, with cells forming both internal and external bone structures.
PLOS COMPUTATIONAL BIOLOGY
(2021)
Review
Multidisciplinary Sciences
Shigeru Kondo, Masakatsu Watanabe, Seita Miyazawa
Summary: Skin patterns are the first example of Turing patterns in living organisms, with research revealing principles of pattern formation at molecular and cellular levels. Contrary to classical reaction-diffusion models, real skin patterns are established by autonomous migration and proliferation of pigment cells mediated through direct cell-cell interactions. Various studies are underway to adapt mathematical models to experimental findings in skin pattern research for potential applications in other autonomous pattern formation phenomena.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Editorial Material
Developmental Biology
Shigeru Kondo
Summary: The Turing model, a mathematical model that explains autonomy in the morphogenesis of organisms, has gained acceptance among experimental embryologists. It has been used to conceptualize and experimentally explore biological phenomena, as well as being incorporated into complex 3D models.
Article
Multidisciplinary Sciences
Haruhiko Adachi, Keisuke Matsuda, Teruyuki Niimi, Shigeru Kondo, Hiroki Gotoh
SCIENTIFIC REPORTS
(2020)