Results 41 to 50 of about 24,816 (230)
Overturn of ilmenite‐bearing cumulates in a rheologically weak lunar mantle [PDF]
, 2019 ©2019. American Geophysical UnionThe crystallization of the lunar magma ocean (LMO) determines the initial structure of the solid Moon. Near the end of the LMO crystallization, ilmenite‐bearing cumulates (IBC) form beneath the plagioclase crust.
Breuer, Doris +5 more
core +2 more sources
Microspherules Formed by Lightning Strikes
Meteoritics &Planetary Science, EarlyView.Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley +1 more source
pyMelt: An extensible Python engine for mantle melting calculations
Volcanica, 2022 Modelling the melting of Earth’s mantle is crucial for understanding the distribution of volcanic activity on Earth and for testing models of mantle convection and mantle lithological heterogeneity.
Simon Matthews +2 more
doaj +1 more source
, 2007 New Theory of the Earth is an interdisciplinary advanced textbook on all aspects of the interior of the Earth and its origin, composition, and evolution: geophysics, geochemistry, dynamics, convection, mineralogy, volcanism, energetics and thermal ...
Anderson, Don L.
core +2 more sources
P and S Wave Anisotropic Tomography of the Banda Subduction Zone
Geophysical Research Letters, 2023 In subduction zones with slab‐slab interactions, the pattern of mantle convection is very complex and still unclear. In this study, we jointly invert a large number of P and S wave arrival time data of local earthquakes for 3‐D isotropic and anisotropic ...
Yuanyuan Hua, Dapeng Zhao, Yi‐Gang Xu
doaj +1 more source
Geodynamo and mantle convection simulations on the Earth Simulator using the Yin-Yang grid
, 2005 We have developed finite difference codes based on the Yin-Yang grid for the geodynamo simulation and the mantle convection simulation. The Yin-Yang grid is a kind of spherical overset grid that is composed of two identical component grids. The intrinsic
Akira Kageyama +14 more
core +1 more source
Top-driven asymmetric mantle convection [PDF]
, 2015 The role of decoupling in the low-velocity zone is crucial for understanding plate tectonics and mantle convection. Mantle convection models fail to integrate plate kinematics and thermodynamics of the mantle. In a first gross estimate, we computed at >300 km3/yr the volume of the plates lost along subduction zones. Mass balance predicts that slabs are
DOGLIONI, Carlo, D. L. Anderson
openaire +3 more sources
Mantle convection and diamonds
LITHOSPHERE (Russia), 2023 Research subject. The present evolutionary stage of geodynamic theory is associated with the idea of thermochemical convection of various levels in the Earth's mantle, where the centrifugal branches are represented by plumes, and the centripetal - by subduction zones. Aim.
V. N. Puchkov, D. A. Zedgenizov
openaire +1 more source
Implementation and application of adaptive mesh refinement for thermochemical mantle convection studies [PDF]
, 2011 Numerical modeling of mantle convection is challenging. Owing to the multiscale nature of mantle dynamics, high resolution is often required in localized regions, with coarser resolution being sufficient elsewhere.
Leng, Wei, Zhong, Shijie
core
Thermal and electrical conductivity of iron at Earth's core conditions [PDF]
, 2012 The Earth acts as a gigantic heat engine driven by decay of radiogenic isotopes and slow cooling, which gives rise to plate tectonics, volcanoes, and mountain building.
A Jackson +41 more
core +2 more sources