Results 21 to 30 of about 308,210 (306)

PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS

open access: yesГеодинамика и тектонофизика, 2017
Evidence of melt-rock reaction between suprasubduction zone (SSZ) peridotites and island arc boninititc and tholeiitic melts are identified. This process is the cause of replacive dunites and pyroxenite veins forming, which are represent the ways of ...
A. A. Karimov   +2 more
doaj   +1 more source

Oxygen-isotope and trace element constraints on the origins of silica-rich melts in the subarc mantle [PDF]

open access: yes, 2007
Peridotitic xenoliths in basaltic andesites from Batan island in the Luzon arc contain silica-rich (broadly dacitic) hydrous melt inclusions that were likely trapped when these rocks were within the upper mantle wedge underlying the arc.
Eiler, J. M.   +4 more
core   +5 more sources

Geochemical Evidence of Island-Arc Origin for Sumatra Island; A New Perspective based on Volcanic Rocks in Lampung Province, Indonesia

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v6i4.128Since decades, Sumatra Island is considered as the Eurasia continental margin where the Indian Ocean plate has been subducted oblique beneath the continental plate of Sumatra.
Iskandar Zulkarnain
doaj   +1 more source

Underwater gas-hydrothermal activity within the Kuril island arc [PDF]

open access: yesГеосистемы переходных зон, 2021
The Kuril island arc is an important element of the Pacific transition zone, within which such modern geological processes as underwater gas-hydrothermal activity occur.
Vyacheslav I. Bondarenko   +1 more
doaj   +1 more source

Basalts erupted along the Tongan fore-arc during subduction initiation: evidence from geochronology of dredged rocks from the Tonga fore-arc and trench [PDF]

open access: yes, 2012
A wide variety of different rock types were dredged from the Tonga fore arc and trench between 8000 and 3000 m water depths by the 1996 Boomerang voyage.
Banerjee   +65 more
core   +2 more sources

SEISMOTECTONICS AND MECHANISMS OF TSUNAMI GENERATION ALONG ACTIVE BOUNDARIES OF YOUNG, MARGINAL SEA BASINS AND SPREADING RIDGES OF THE SOLOMON ISLANDS REGION – Case Study: The Earthquake and Tsunami of 1 April 2007 in the Solomon Islands [PDF]

open access: yesScience of Tsunami Hazards, 2020
The Solomon Islands region is characterized by high seismic activity. During the last 100 years there have been numerous strong earthquakes with periodic variation of recurrence.
George Pararas-Carayannis
doaj  

Structure and evolution of Cenozoic arc magmatism on the Antarctic Peninsula: a high resolution aeromagnetic perspective [PDF]

open access: yes, 2014
The Antarctic Peninsula (AP) consists of a long lived and uniquely well preserved magmatic arc system. The broad tectonic structure of the AP arc is well understood.
Ferraccioli, F.   +7 more
core   +2 more sources

The role of island-arc oceanic, collisional and intraplate magmatism in the formation of continental crust in the Mongolia-Trasnbaikalia region: geostructural, geochronological and Sm-Nd isotope data

open access: yesГеодинамика и тектонофизика, 2021
The formation of continental crust in the Mongolia-Transbaikalia region is researched to identify the mechanisms of interactions between the crust and the mantle in the development of the Neoarchean, Proterozoic and Paleozoic magmatic and sedimentary ...
I. V. Gordienko
doaj   +1 more source

Reconstructing the Crustal Section of the Intra‐Oceanic Caribbean Island Arc: Constraints From the Cumulate Layered Gabbronorites and Pyroxenites of the Rio Boba Plutonic Sequence, Northern Dominican Republic

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Located in northern Dominican Republic, the Early Cretaceous Rio Boba mafic‐ultramafic plutonic sequence constitutes a lower crust section of the Caribbean island arc, made up by gabbroic rocks and subordinate pyroxenite.
J. Escuder‐Viruete   +5 more
doaj   +1 more source

Sunda-Banda arc transition: incipient continent-island arc collision (Northwest Australia) [PDF]

open access: yes, 2009
The eastern Sunda arc represents one of the few regions globally where the early stages of continent-arc collision can be studied. We studied along the western limit of the collision zone at the Sunda-Banda arc transition, where the Australian margin ...
A. Krabbenhoeft   +38 more
core   +1 more source

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