Results 1 to 10 of about 308,091 (188)

Primitive Cretaceous island-arc volcanic rocks in eastern Cuba: the Téneme Formation [PDF]

open access: yesGeologica Acta, 2006
The Téneme Formation is located in the Mayarí-Cristal ophiolitic massif and represents one of the three Cretaceous volcanic Formations established in northeastern Cuba.
J.A. PROENZA FERNÁNDEZ   +9 more
doaj   +6 more sources

Neoproterozoic to early Phanerozoic rise in island arc redox state due to deep ocean oxygenation and increased marine sulfate levels. [PDF]

open access: yesProc Natl Acad Sci U S A, 2019
A rise in atmospheric O_2 levels between 800 and 400 Ma is thought to have oxygenated the deep oceans, ushered in modern biogeochemical cycles, and led to the diversification of animals. Over the same time interval, marine sulfate concentrations are also
Stolper DA, Bucholz CE.
europepmc   +5 more sources

The metallogenic evolution of the Greater Antilles [PDF]

open access: yesGeologica Acta, 2011
The Greater Antilles host some of the world’s most important deposits of bauxite and lateritic nickel as well as significant resources of gold and silver, copper, zinc, manganese, cobalt and chromium.
C.E. NELSON   +3 more
doaj   +8 more sources

Role of crustal melting in petrogenesis of the Cretaceous Water Island Formation (Virgin Islands, northeast Antilles Island arc) [PDF]

open access: yesGeologica Acta, 2006
The latest Aptian to earliest Albian (~115 Ma) Water Island Fm in the Virgin Islands contains some of the oldest known arc-related strata in the Greater Antilles Island Arc.
W.T. JOLLY, E.G. LIDIAK
doaj   +6 more sources

Submarine volcano 8.10 (Kuril island arc)

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2022
The submarine volcano 8.10, part of the South Iturup group of underwater volcanoes of the Kuril island arc (KIA), was studied using a proven technology of quantitative interpretation of hydromagnetic survey materials in combination with echo sounding ...
Blokh Yu.I.   +7 more
doaj   +2 more sources

Large-scale slope failure and active erosion occurring in the southwest Ryukyu fore-arc area [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2001
The southwestern Ryukyu area east of Taiwan Island is an arcuate boundary between Philippine Sea Plate and Eurasian Plate. The topographic features in the area are characterised by (1) a large-scale amphitheatre off Ishigaki Island, just on the ...
T. Matsumoto   +3 more
doaj   +4 more sources

Characteristics of volcanic-sedimentary formations and developmental patterns of source and reservoir rocks in an island arc environment of Shibei Sag, Junggar Basin: taking the Carboniferous Jiangbasitao Formation as an example

open access: yesShiyou shiyan dizhi, 2023
The Shibei Sag is located in the north of Luliang Uplift in the eastern Junggar Basin. There has been no breakthrough in the exploration of Carboniferous volcanic traps in the Shibei Sag in the past years.
Wei XIONG   +6 more
doaj   +1 more source

GRANITOID MAGMATISM IN THE NORTH OF THE URALS: U–Pb AGE, EVOLUTION, SOURCES

open access: yesГеодинамика и тектонофизика, 2021
This work presents the summarization of U–Pb (SIMS, TIMS) zircon dates and petrogeochemical signatures of granitoids of the north of the Urals (Polar, Subpolar, and Northern Urals) obtained over the last decade.
O. V. Udoratina   +6 more
doaj   +1 more source

Tectono-magmatic evolution of the Philippine Sea Plate: A review

open access: yesGeosystems and Geoenvironment, 2022
The West Pacific Margin incorporates 75% of global marginal basins/back-arc basins. These basins and their adjacent trenches and island arcs constitute a huge trench-arc-basin system created by the interactions among three tectonic plates (the Pacific ...
Quanshu Yan   +4 more
doaj   +1 more source

Volcanism and intrusive magmatism of the Magnitogorsk paleoarc in the epoch of its “soft” collision with a margin of the East European continent

open access: yesЛитосфера, 2020
Research subject. The article sets out to investigate the change of the geodynamic regime from the island-arc type to the accretionary-collisional type in the Late Devonian–Early Carboniferous, which occurred as a result of 1) a collision between the ...
D. N. Salikhov   +3 more
doaj   +1 more source

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