scholarly journals ROLE OF BACK-ARC TECTONICS IN THE ORIGIN OF SUBDUCTION MAGMAS: NEW SR, ND, AND PB ISOTOPE DATA FROM MIDDLE MIOCENE LAVAS OF KUNASHIR ISLAND (Kurile Island Arc)

2015 ◽  
Vol 56 (3) ◽  
Keyword(s):  
Middle Miocene ◽  
Island Arc ◽  
Kurile Island ◽  
Pb Isotope ◽  
Isotope Data ◽  
Kurile Island Arc ◽  
Kunashir Island ◽  
Back Arc

scholarly journals Discovery of Ancient Volcanoes in the Okhotsk Sea (Russia): New Constraints on the Opening History of the Kurile Back Arc Basin

Geosciences ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 442
Author(s):  
Reinhard Werner ◽  
Boris Baranov ◽  
Kaj Hoernle ◽  
Paul van den Bogaard ◽  
Folkmar Hauff ◽  
...  
Keyword(s):  
Trace Element ◽  
Island Arc ◽  
Kurile Island ◽  
Geochemical Data ◽  
Magma Source ◽  
Published Data ◽  
Kurile Island Arc ◽  
History Of ◽  
Spreading Rates ◽  
Back Arc

Here we present the first radiometric age and geochemical (major and trace element and isotope) data for samples from the Hydrographer Ridge, a back arc volcano of the Kurile Island Arc, and a newly discovered chain of volcanoes (“Sonne Volcanoes”) on the northwestern continental slope of the Kurile Basin on the opposite side of the arc. The 40Ar/39Ar age and geochemical data show that Hydrographer Ridge (3.2–3.3 Ma) and the “Sonne Volcanoes” (25.3–25.9 Ma) have very similar trace element and isotope characteristics to those of the Kurile Island Arc, indicating derivation from a common magma source. We conclude that the age of the “Sonne Volcanoes” marks the time of opening of the Kurile Basin, implying slow back arc spreading rates of 1.3–1.8 cm/y. Combined with published data from the Kurile fore arc, our data suggest that the processes of subduction, Kurile Basin opening and frontal arc extension occurred synchronously and that extension in the rear part and in the frontal part of the Kurile Island Arc must have been triggered by the same mechanism.

Chemical Composition of the Surface and Ground Waters of Matua Island, the Kurile Island Arc

2020 ◽  
Vol 58 (5) ◽  
pp. 549-561
Author(s):  
A. V. Savenko ◽  
A. N. Ivanov ◽  
V. S. Savenko ◽  
O. S. Pokrovsky
Keyword(s):  
Chemical Composition ◽  
Island Arc ◽  
Kurile Island ◽  
Ground Waters ◽  
Kurile Island Arc ◽  
Matua Island

Geological structure of the submarine Vityaz Ridge within the Seismic Gap area (Pacific slope of the Kurile island arc)

2008 ◽  
Vol 2 (2) ◽  
pp. 99-109 ◽  
Author(s):  
E. P. Lelikov ◽  
I. B. Tsoy ◽  
T. A. Emel’yanova ◽  
E. P. Terekhov ◽  
N. G. Vashchenkova ◽  
...  
Keyword(s):  
Geological Structure ◽  
Island Arc ◽  
Kurile Island ◽  
Seismic Gap ◽  
Submarine Vityaz Ridge ◽  
Vityaz Ridge ◽  
Kurile Island Arc ◽  
Pacific Slope

and ratios in recent magmatic rocks of the Kurile island arc

1987 ◽  
Vol 66 (3-4) ◽  
pp. 227-243 ◽  
Author(s):  
Dmitri Z. Zhuravlev ◽  
Andrei A. Tsvetkov ◽  
Andrei Z. Zhuravlev ◽  
Nikolai G. Gladkov ◽  
Igor V. Chernyshev
Keyword(s):  
Island Arc ◽  
Kurile Island ◽  
Magmatic Rocks ◽  
Kurile Island Arc
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