Results 21 to 30 of about 2,848 (221)
Evolution of migmatitic granulite complexes: Implications from Lapland Granulite Belt, Part II: Isotopic dating [PDF]
Bulletin of the Geological Society of Finland, 2006 The migmatitic metapelites of the Lapland granulite belt (LGB) in the NE part of the Fennoscandian Shield represent an arc-related greywacke basin metamorphosed in the granulite facies. Detrital zircons from migmatitic metapelites are derived from 1.94 −
P. Tuisku, H. Huhma
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Metamorphic history and geodynamic significance of the Early Cretaceous Sabzevar granulites (Sabzevar structural zone, NE Iran) [PDF]
Solid Earth, 2011 The Iranian ophiolites are part of the vast orogenic suture zones that mark the Alpine-Himalayan convergence zone. Few petrological and geochronological data are available from these ophiolitic domains, hampering a full assessment of the timing and ...
M. Nasrabady +3 more
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Geosciences, 2018 The relative depletion of high field strength elements (HFSE), such as Nb, Ta and Ti, on normalised trace-element plots is a geochemical proxy routinely used to fingerprint magmatic processes linked to Phanerozoic subduction.
George L. Guice +6 more
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Lithosphere, 2022 Shear zones are important channels for the exhumation of lower crustal rocks. The Ambaji granulite of the Aravalli-Delhi mobile belt (ADMB) has been exhumed along several shear zones, and earlier studies have shown a two-stage exhumation process during a
Sudheer Kumar Tiwari +7 more
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Frontiers in Earth ScienceAccurately determining the retrograde metamorphic ages of pelitic granulites is crucial for reconstructing their metamorphic evolution and understanding associated post-collisional extensional and subsequent exhumation processes in orogenic belts.
Shangjing Wu +3 more
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Геофизический журнал, 2021 Profile 3-DV (Skovorodino-Tommot) crosses in the sublatitudinal direction the Stanovoy and Aldan megablocks of the Aldan-Stanovoy shield. As the basic elements of the Earth’s crust section along the profile 3-DV, a technique was adopted for identifying ...
V. V. Stogny, G. A. Stogny
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Ion microprobe (SHRIMP) dates complex granulite from Santa Catarina, southern Brazil
Anais da Academia Brasileira de Ciências, 2000 Complex polymetamorphic granulites have been dated in the Santa Catarina granulite complex of southern Brazil through SHRIMP study of zircon. This complex is dominated by intermediate-acid plutonic rocks and contains small volumes of mafic and ultramafic
LÉO A. HARTMANN +4 more
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Geology and mineralogy of gemming terrains of Sri Lanka [PDF]
Bulletin of the Geological Society of Finland, 1985 Gemming in Sri Lanka is carried out in river valleys and on hill slopes underlain by high grade Precambrian metasedimentary rock suites. The principal gem mineral, corundum, is mined from assemblages rich in garnet, spinel, topaz, tourmaline and zircon ...
K. Dahanayake, A.P. Ranasinghe
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Dizhi lixue xuebao, 2023 Multiple interpretations exist regarding the tectonic evolution model of the Neoarchean North China Craton, requiring a more in-depth study of metamorphic processes.
CUI Runze, WEI Chunjing
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Precambrian intraplate magmatism: high temperature low pressure granulites.
, 1999 Starting from the hypothesis that the lower continental crust is dominated by granulites, some essential features of granulites are recalled. Two general P-T-t paths are possible, clockwise and anticlockwise, of which the former is more common for high ...
Huizenga, J.M., Touret, J.L.R.
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