Results 81 to 90 of about 1,707 (195)

Thermochemical Controls on the X, 410, and 660 Discontinuities in the Central Mediterranean

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract The mantle beneath the Central Mediterranean is thermally and compositionally heterogeneous, as indicated by fragmented and locally stagnant slabs in tomographic images and HIMU‐like anorogenic magmatism. Mantle discontinuities are sensitive to both temperature and composition, and thus provide a way to quantify these heterogeneities.
Luciana Bonatto, Stephen Monna, Caterina Montuori, Claudia Piromallo, Vernon Cormier   +4 more
wiley   +1 more source

Double volcanic tracks at Hawaii caused by bridgmanite-enriched primordial mantle blobs

Nature Communications
Mantle plumes, rising from Earth’s deep interior, are expected to produce a single age-progressive hotspot track. However, Hawaiian volcanoes younger than ~7 million years form two subparallel volcanic chains, the Loa and Kea trends. The mechanism behind
Hao Liu, Xin Deng, Wei Leng, Zhongqing Wu, Risheng Chu, Xin Wang   +5 more
doaj   +1 more source

Comparing Monte Carlo Models of Impact Alteration of Planetary Atmospheres

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract One process that affects atmospheric surface pressure is impact bombardment. The evolution of a planet's atmosphere under impact bombardment is an open question. We use a Monte Carlo method to evolve a range (0.006–92.5 bar) of initial atmospheres at Mars, Earth, and Venus under bombardment of 5×106 $5\times 1{0}^{6}$ impactors using seven ...
M. R. Huffman, D. A. Brain, K. N. Singer, J. C. Johnston, C. A. Caldwell   +4 more
wiley   +1 more source

Influence of the Hainan Plume on the Deep Thermal Structure and Shallow Geothermal Field of Southeastern Coastal China

Journal of Marine Science and Engineering
Thermal anomalies within the lithosphere are an important manifestation of mantle plume–lithosphere interaction. Early studies primarily concentrated on the presence of the Hainan plume and its surface responses, with comparatively little research ...
Huihui Zhang, Lijuan He, Yaqi Wang
doaj   +1 more source

Eocene to Miocene U‐Pb Geochronology Evolution of the Rio Grande Rise, Southwestern Atlantic: A Paleoceanographic Approach

Paleoceanography and Paleoclimatology, Volume 41, Issue 8, August 2026.
Abstract The Rio Grande Rise (RGR) is a major submarine feature in the South Atlantic that plays an important role in regional oceanographic dynamics. This study presents new U‐Pb geochronology of sedimentary rocks from the RGR, offering direct age constraints on carbonate and apatite embedded within Fe‐Mn crusts and associated foraminifera fossils ...
Giovanna Orletti Del Rey, Roberto Ventura Santos, Lucieth Cruz Vieira, Isabela Moreno Cordeiro Sousa, Antônio Cosme Del Rey, Guilherme de Oliveira Gonçalves, Elton Luiz Dantas, Paola Ferreira Barbosa, Eugênio Pires Frazão   +8 more
wiley   +1 more source

Inversion by Intrusion: Magma‐Driven Shortening in the Turkana Rift (East Africa)

Tectonics, Volume 45, Issue 8, August 2026.
Abstract Late Pliocene to Pleistocene inversion in the Turkana Rift, observed on seismic reflection data and in outcrop, presents a tectonic paradox by indicating local shortening in an overall extensional setting. Previous studies attributed this inversion either to the reactivation of obliquely oriented structural weaknesses or to reorientation of ...
Ameha A. Muluneh, Chris K. Morley, Sascha Brune, Sibiao Liu, Anne C. Glerum, Rene Gassmöller, Marta Pérez‐Gussinyé   +6 more
wiley   +1 more source

Anatomy of the Emeishan Mantle Plume Head: Insights From New Geochronologic, Geochemical, and Geologic Data

Geochemistry, Geophysics, Geosystems
The link between mantle plumes and the formation of large igneous provinces (LIPs) is well established although the anatomy of these remains equivocal. Recent experimental studies and geophysical data suggest that the mantle plume head is more likely to ...
Hongbo Li, Zhaochong Zhang, Ran Liu, Marc K. Reichow, Jiang Zhu, Richard Ernst, M. Santosh, Wei Wang, Changquan Li, Botong Li   +9 more
doaj   +1 more source

Kamafugite Magma Pathways and Lava‐Flow Paleotopography From Three‐Dimensional Audiomagnetotelluric Imaging Constrained by Borehole Data

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract An audiomagnetotelluric (AMT) survey was conducted within the Alto Paranaíba Igneous Province, southeastern Brazil, to delineate shallow occurrences of kamafugite, a rare ultrapotassic volcanic rock worldwide. A dense grid of AMT stations was deployed, allowing the construction of a high‐resolution 3D electrical resistivity model ...
Lucca M. Franco, Emanuele F. La Terra, Liliane P. Panetto, Adevilson O. Alves, Miguel A. Tupinambá, Sergio L. Fontes, Emin U. Ulugergerli   +6 more
wiley   +1 more source

Non-mantle-plume process caused the initial spreading of the South China Sea. [PDF]

Sci Rep, 2020
Yu X, Liu Z.
europepmc   +1 more source

Dynamics of mantle plumes [PDF]

, 2016
Mantle plumes are a link between different scales in the Earth’s mantle: They are an important part of large-scale mantle convection, transporting material and heat from the core-mantle boundary to the surface, but also affect processes on a smaller scale, such as melt generation and transport and surface magmatism.
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