Results 121 to 130 of about 29,761 (295)

Fundamental studies in geodynamics [PDF]

Research in fundamental studies in geodynamics continued in a number of fields including seismic observations and analysis, synthesis of geochemical data, theoretical investigation of geoid anomalies, extensive numerical experiments in a number of ...
Anderson, D. L., Hager, B. H., Kanamori, H.   +2 more
core   +1 more source

Magnetostratigraphy and Source Characterisation Across the Early Miocene Unconformity, Northern Rocky Mountains, USA

Terra Nova, Volume 38, Issue 1, Page 1-8, February 2026.
ABSTRACT The early Miocene unconformity (EMU) formed during a transition in the tectonic regime of western North America that coincided with faunal diversification. The Railroad Canyon section in the northern Rocky Mountains provides a complete geologic record around this event. Our new magnetostratigraphic study in combination with published U‐Pb ages
Dieke Gerritsen, Stuart A. Gilder, Alina L. Ludat, Michael R. Wack   +3 more
wiley   +1 more source

Automatic Analysis of Hydroacoustic Signals Related to the Activity of the Fani Maoré Submarine Volcano

Geochemistry, Geophysics, Geosystems
Due to the properties of sound propagation underwater, including the existence of the SOFAR channel, sounds in the ocean can propagate over large distances with little attenuation.
Pierre‐Yves Raumer, Sara Bazin, Romain Safran, Dorian Cazau, Jean‐Yves Royer   +4 more
doaj   +1 more source

New Geochronological Constraints on the Late Palaeozoic Tarija Basin, Southern Bolivia: Tectonic and Palaeoclimatic Implications

Terra Nova, Volume 38, Issue 1, Page 9-18, February 2026.
ABSTRACT The Carboniferous‐Permian Tarija basin of southern Bolivia evolved under major tectonic and climatic influence. The timing of transition from glacially influenced to arid conditions, after the Gondwanide tectonic event, has been based mainly on palynological correlations.
Felipe R. Ferroni, Peter G. DeCelles, Jaime Oller Veramendi, Juan Andrés Dahlquist, Mercedes di Pasquo   +4 more
wiley   +1 more source

Expanding the Ichnofacies Model to Tidal Straits: Testing Predictions and Assessing Anomalies

Terra Nova, Volume 38, Issue 1, Page 19-26, February 2026.
ABSTRACT Trace fossils are instrumental in facies analysis, but some depositional environments remain underexplored. Cenozoic deposits in Italy have been studied to evaluate the ichnology of tidal straits. These comprise four zones: (1) strait centre, (2) dune‐bedded strait zone, (3) strait end and (4) strait margin.
Luis A. Buatois, M. Gabriela Mángano, Valentina M. Rossi, Sergio G. Longhitano, Julio Leva Lopez, Marcello Gugliotta, Domenico Chiarella   +6 more
wiley   +1 more source

Editorial: Towards Improved Forecasting of Volcanic Eruptions

Frontiers in Earth Science, 2020
Corentin Caudron, Lauriane Chardot, Társilo Girona, Yosuke Aoki, Nico Fournier   +4 more
doaj   +1 more source

P‐T‐t‐d Evolution of Low‐Grade Metamorphic Xenotime, Eastern Alps (Austria)

Terra Nova, Volume 38, Issue 1, Page 65-76, February 2026.
ABSTRACT In situ LA‐ICP‐MS U‐Pb dating of xenotime was used to establish the age of low‐grade metamorphism in Permian metasediments of the Austroalpine Unit (Eastern Alps, Austria). Complexly zoned xenotime in chloritoid‐bearing metasedimentary samples possesses distinct MREE‐rich domains. In the eastern sample, this domain yielded a date of c. 135 Ma,
M. S. Hollinetz, B. Huet, C. R. M. McFarlane, D. A. Schneider, B. Grasemann   +4 more
wiley   +1 more source

Ionospheric seismology and volcanology

, 2023
Kosuke Heki
openalex   +1 more source

Seismological Evidence of Multiple Crustal Magma Reservoirs Beneath Mt. Wrangell in Southcentral Alaska

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Recent studies have challenged the classical view of magma chambers as ephemeral, melt‐rich bodies confined to shallow depths beneath arc volcanoes at subduction zones. Instead, increasing evidence supports the existence of long‐lived, vertically extensive magmatic systems with persistent partial melts within the crust. Nevertheless, the depth
Qili Andy Dai, Haiying Gao, Sahria Nayon, Zane Michael Cleghorn, Cong Li   +4 more
wiley   +1 more source

Abnormally Large Magma Flux Does Not Lead to Eruption in Subduction Zone Calderas: The 2022–2023 Episode of Uplift of Aniakchak Crater (Aleutians)

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Observations of ground deformation provide insights on the triggering mechanisms of eruptions. At Aniakchak Crater (Aleutians) InSAR measured ∼ ${\sim} $72 cm of uplift in less than 7 months between 2022 and 2023. The uplift can be explained by the inflation of a point pressure source at a depth of 3.2 km.
Francisco Delgado
wiley   +1 more source