Results 41 to 50 of about 388 (174)

PALEOTECTONIC AND PALEOGEOGRAPHIC CONDITIONS FOR THE ACCUMULATION OF THE LOWER RIPHEAN AI FORMATION IN THE BASHKIR UPLIFT (SOUTHERN URALS): THE TERRANECHRONE® DETRITAL ZIRCON STUDY

Геодинамика и тектонофизика, 2018
The TerraneChrone® (LA-ICP-MS) technique has been applied to carry out an integrated study of detrital zircons in sandstones sampled from the basal horizons of the stratotypical Riphean sequence in the Southern Urals, specifically the Navysh and Chudin ...
T. V. Romanyuk, N. B. Kuznetsov, E. A. Belousova, V. M. Gorozhanin, E. N. Gorozhanina   +4 more
doaj   +1 more source

A Graphical User Interface Application to Model Open‐System Melting in the Upper Mantle

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The mantle partial melting process is crucial for the physicochemical evolution of the Earth's upper mantle and the generation of mafic crust. The open‐system melting model incorporates continuous melt segregation, interaction with melts or fluids, and crystallization of trapped melt and therefore provides a comprehensive model for simulating ...
I. Nishio, N. Akizawa, K. Ozawa, K. Itano, P. Waterton   +4 more
wiley   +1 more source

Electrical Conductivity of Hydrous Ultramafic Melts With Implications for Origin of Low Velocity Layer Atop of the 410 km Seismic Discontinuity

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Low‐velocity layers (LVLs) above the 410‐km discontinuity are commonly attributed to partial melt generated by dehydration melting when hydrous mantle transition‐zone material rises into the upper mantle, where water solubility in nominally anhydrous minerals decreases.
Takashi Yoshino, Longjian Xie
wiley   +1 more source

Problems of search and diagnosis of carbonatites on the territory of Ukraine

Вісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія
Reliably established carbonatites on the territory of Ukraine have characteristics inherent in this class of rocks, in particular, they are enriched with a fairly wide range of rare chemical elements, the most characteristic are rare earth elements and ...
Василь Загнітко
doaj   +1 more source

To the problem of origin of the Bug series rocks

Геофизический журнал, 2019
The age of the Bug series rocks is an object for discussion. Isotopic methods do not give a distinct answer, because in the same outcrop, the same sample and even in the same crystal of zircon several dates of formation are to be found with evident ...
O. V. Usenko
doaj   +1 more source

Global Cooling Driving the Increase in Erosion Rates Across the Himalaya Since the Quaternary

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Late Cenozoic global cooling is well documented, yet its impact on erosion rates in active mountain belts, particularly after the onset of Quaternary glaciation, remain contentious. This ambiguity partially stems from the potential methodological biases in erosion rate quantification, particularly in the Himalaya, where recent studies report ...
Dongxu Cai, Guangwei Li, Huayu Lu, Qiang Su, Wenbin Zhu, Johan De Grave, Paul R. Eizenhöfer, Matthew Fox, Simon Mudd, Xianyan Wang   +9 more
wiley   +1 more source

Emplacement of Hybrid Continental‐Oceanic Arc Terranes Without Collision: The Devonian Calliope Arc (New England Orogen, Australia)

Tectonics, Volume 45, Issue 7, July 2026.
Abstract The accretion of allochthonous provinces, derived from oceanic plates, has traditionally been considered an important contributor to continental growth. However, increasing evidence shows that some oceanic terranes (e.g., island arcs) are not “exotic,” as suggested by the presence of continental‐derived sedimentary provenance.
Igor V. Gomes, Gideon Rosenbaum, Carlos A. Spier, Jack F. Ward, Luke A. Milan   +4 more
wiley   +1 more source

DISTRIBUTION OF TRACE ELEMENTS IN PEROVSKITE FROM SKARNS AND CALCITE VEINS OF THE CHERNAYA RECHKA AND NAZYAM RIDGES (SOUTH URALS) [PDF]

Минералогия, 2017
Trace element distribution and crystal morphology of perovskite from garnet-vesuvianite skarn of the Akhmatovskaya mine and chlorite-perovskite-calcite veins of the Perovskitovaya mine (South Urals) were studied using LA-ICP-MS.
S.Yu. Stepanov, L.N. Sharpenok, R.S. Palamarchuk, A.I. Glazov   +3 more
doaj  

Hotspot magmatism and volcanic hazard at Cape Verde through the lens of shipborne surveying and dredging

Geology Today, Volume 42, Issue 4, Page 174-182, July/August 2026.
The Cape Verde archipelago is a long‐lived volcanic ocean island chain formed by a mantle plume in the Atlantic Ocean. The archipelago is characterized by ten subaerial islands with complex age relationships, abundant submarine volcanism and variable volcanic hazards.
Brian Oller, Hunter R. Edwards, Yash Srivastava, Abigail K. Barker, Alex Kovalick, Giovanni Lima, Cornelia Nilsson, Marine Paquet, Easton Satin‐Shaw, Isaias Teixeira, M. Jeff Buxton, Noah DesRosiers, Mason Schettig, James M.D. Day   +13 more
wiley   +1 more source

Craton-margin lithosphere drives rare earth element ore-forming carbonatite magmatism

Nature Communications
The majority of light rare earth element (LREE) resources are derived from carbonatite-associated deposits at cratonic margins. However, the origin of ore-forming carbonatite magmas remains unclear.
Chunfei Chen, Yu Wang, Svyatoslav S. Shcheka, Michael W. Förster, Weicheng Jiang, Yanjing Chen, Stephen F. Foley, Dorrit E. Jacob, Yongsheng Liu   +8 more
doaj   +1 more source