Results 151 to 160 of about 2,667 (222)

Magnetotelluric evidence for the deep causes of different eruptive styles of Changbaishan Tianchi and Longgang volcanoes. [PDF]

Sci Rep
Zhao L, Zhan Y, Kiyan D, Xu J, Hu Y, Tang J, Sun X, Wang Q, Cao C.   +8 more
europepmc   +1 more source

Melt–Rock Interaction Experiments Reveal Rapid Microstructural and Chemical Changes at Lower Crustal Conditions

Journal of Metamorphic Geology, Volume 43, Issue 4, Page 341-358, May 2025.
ABSTRACT The reactive flow of melt through the mantle or crust triggers chemical disequilibrium, driving reactions that significantly alter the mineral assemblages and physical properties of host rocks. However, the degrees of chemical difference required to initiate these reactions and their timescale remain poorly understood.
Robyn L. Gardner, Nathan R. Daczko, Sandra Piazolo, John Adam, Uvana Meek   +4 more
wiley   +1 more source

Terrane accretion explains thin and hot ocean-continent back-arcs. [PDF]

Sci Adv
Erdős Z, Huismans RS, Wolf SG, Faccenna C.   +3 more
europepmc   +1 more source

A New UHP‐HP Tectono‐Metamorphic Architecture for the Southern Dora‐Maira Massif Nappe Stack (Western Alps) Based on Petrological and Microstructural Evidence

Journal of Metamorphic Geology, Volume 43, Issue 4, Page 359-383, May 2025.
ABSTRACT The southern Dora‐Maira Massif, where coesite was first discovered 40 years ago, is among the most studied and better known example of high/ultra‐high‐pressure (HP/UHP) terranes. Previous to this study, the Polymetamorphic Basement Complex of the southern Dora‐Maira Massif has been defined as a nappe stack consisting of three juxtaposed ...
Chiara Groppo, Simona Ferrando, Fabrizio Tursi, Franco Rolfo   +3 more
wiley   +1 more source

Sm-Nd Isotope Data Compilation from Geoscientific Literature Using an Automated Tabular Extraction Method. [PDF]

Sci Data
Guo Z, Wang T, Wang C, Zhou J, Zheng G, Wang X, Zhou C.   +6 more
europepmc   +1 more source

Equilibrium Silicon Isotope Fractionation in Eclogites and Granites Constrained by Single Crystal X‐Ray Diffraction and the Force Constants Approach

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Using our recently developed X‐ray diffraction based force constants approach, we have determined the equilibrium Si isotope fractionation between omphacite/garnet, quartz/kyanite, and quartz/zircon at temperatures relevant to the petrogenesis. We find that Na strongly affects the Si isotope fractionation between omphacite and garnet.
Dongzhou Zhang, Jingui Xu, Przemyslaw K. Dera, Bin Chen, Ming Chen   +4 more
wiley   +1 more source

Seismic imaging of a basaltic Lesser Antilles slab from ancient tectonics. [PDF]

Nature
Yang X, Xie Y, Rychert CA, Harmon N, Goes S, Rietbrock A, Lynch L, Members of the VoiLA Working Group.   +7 more
europepmc   +1 more source

Grain Boundary Diffusion of Ferropericlase: Implications for the Core‐Mantle Interaction

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Geophysical observations indicate that iron enrichment of various spatial scales may be present in the lowermost mantle. Various mechanisms have been proposed to explain the process of iron infiltration from the core to the mantle, each with its own inherent limitations.
Yihang Peng, Pierre Hirel, Philippe Carrez, Jie Deng   +3 more
wiley   +1 more source

Inefficient melt mixing below a fast-spreading ridge revealed by Hess Deep lower gabbros (ODP Leg 147 and IODP Expedition 345). [PDF]

Sci Adv
Basch V, Sanfilippo A, Genske F, Böhnke M, Zanetti A, Stracke A.   +5 more
europepmc   +1 more source

Formula for the Chandler Period (Free Wobble of Planetary Bodies)

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract If the rotational equilibrium of a planetary body is disturbed, the rotation pole responds with a cyclical motion. The duration of one cycle is referred to as the Chandler period, and, when viewed from space, the body wobbles. Because planets are not rigid, the wobble period differs from the Euler period by the factor 1−kX/kf $\left(1-{k}_ ...
V. Patočka, M. Walterová
wiley   +1 more source