Laz'ko, E E; Vysotskiy, Sergey V; Koroleva, N V; Muravitskaya, G N (1991): Chemical composition of ultrabasites and composing minerals from the Tonga Trench [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.759007, Supplement to: Laz'ko, EE et al. (1991): Ultrabasites in the northern part of the Tonga Trench. Oceanology, 31(3), 343-348
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Abstract:
A petrologic-geochemical study (petrochemistry, contents of siderophile and certain lithophile elements, composition of rock-forming silicates and accessory chrome spinels) of ultrabasic rocks dredged from the arc side in the northern end of the Tonga deep-sea trench has been carried out. The ultrabasites included harzburgites and dunites. Peridotites show clearly manifested material characteristics of ultrabasic relicts strongly depleted in low-temperature basaltic components. It is suggested that they have arose in the high degree of partial melting (about 30%) of a matrix mantle source of the lherzolite type. Great similarity of the rocks studied with ultrabasites of many ophiolites that are widespread in folded belts indicates that young island arcs are among the most likely geodynamic environments of ophiolite generation.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Latitude: -14.833333 * Longitude: -173.333333
Event(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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3 datasets
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Datasets listed in this publication series
- Laz'ko, EE; Vysotskiy, SV; Koroleva, NV et al. (1991): (Table 1) Chemical compositions of ultrabasites from the Tonga Trench. https://doi.org/10.1594/PANGAEA.758981
- Laz'ko, EE; Vysotskiy, SV; Koroleva, NV et al. (1991): (Table 2) Chemical compositions of olivines and orthopyroxenes from harzburgites of the Tonga Trench. https://doi.org/10.1594/PANGAEA.759004
- Laz'ko, EE; Vysotskiy, SV; Koroleva, NV et al. (1991): (Table 3) Chemical compositions of chrome spinels from ultrabasites of the Tonga Trench. https://doi.org/10.1594/PANGAEA.759006