Results 41 to 50 of about 1,756 (223)
Geologica Carpathica, 2019 The northern extent of the Scandinavian Caledonides includes the Skibotn Nappe Complex of still debated structural position. This paper is focused on part of this complex and presents new U–Th–total Pb monazite dating results for the migmatitic gneiss of
Ziemniak Grzegorz +6 more
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Petrogenesis and geological significance of migmatitic gneiss in Mulantou area, Hainan Island
Dizhi lixue xuebao, 2023 In the coastal area of Pujian to Mulantou on Hainan Island, a set of medium to deep metamorphic rocks (Mulantou complex) has been discovered, composed of migmatite, dolomite, shale, and amphibolite, with migmatite being the predominant lithology.
HU Zailong +5 more
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The role of shearing in the Proterozoic development of the Åland archipelago, S.W. Finland [PDF]
Bulletin of the Geological Society of Finland, 1987 tion of a regional tectonochronology. Folds with E—W axial traces and associated shear zones which are characteristic of the southern Finland migmatite belt (1800 Ma) were refolded during a late phase of NW—SE shearing.
N.P. Branigan
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Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy)
Journal of Maps, 2023 This paper presents the structural map of the Barrabisa Complex, an E-W ribbon-like migmatitic massif exposed in the northern part of Sardinia. The migmatites consist of metatexites and diatexites with variable melt proportion, grading in the central ...
M. De Luca +5 more
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Frontiers in Earth Science, 2020 The Earth’s early basaltic crust converted episodically into felsic TTG (tonalite-trondhjemite-granodiorite) crust by unknown tectonic processes. To contribute to the debate on the possible tectonic settings of TTGs, this article illustrates and explains
Jaana Halla
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An occurrence of monazite in Puumala, eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1969 A monazite occurrence consisting of three monazite-bearing biotite-rich veins is described. The veins have pegmatitic affinities but are very inhomogeneous.
I. Haapala +3 more
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Structural and metamorphic evolution of the Turku migmatite complex, southwestern Finland [PDF]
Bulletin of the Geological Society of Finland, 1999 The Turku migmatite complex in southwestern Finland is a representative area for the type of tectonic and metamorphic evolution seen within the Palaeoproterozoic Svecofennian Orogen in southern Finland.
M. Väisänen, P. Hölttä
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Boreas, EarlyView.Rapid thaw of the Earth's cryosphere in response to anthropogenic warming highlights the need to identify and understand the contrasting signatures of past ice‐sheet stability and collapse. The Kvarken archipelago, western Finland, at the centre of the former Fennoscandian Ice Sheet (FIS), has been designated a UNESCO World Heritage site in recognition
Niko Putkinen +6 more
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Characterization of migmatite fracturing using ultrasonic methods [PDF]
, 2015 Submitted PHD thesis is focused on fracturing process of migmatite, which is a low porosity anisotropic rock. Migmatite, from a locality Skalka, was chosen as a suitable experimental material, namely due to its macroscopically visible, plane-parallel ...
Petružálek, Matěj
core
Tectono-metamorphic evolution and timing of the melting processes in the Svecofennian Tonalite-Trondhjemite Migmatite Belt: An example from Luopioinen, Tampere area, southern Finland [PDF]
Bulletin of the Geological Society of Finland, 1999 The Svecofennian Orogen is in southern Finland characterized by two major migmatite belts. These are the so-called Granite Migmatite Belt, in which Kfs-rich leucosomes predominate, and the Tonalite-Trondhjemite Migmatite Belt, which is characterized by ...
H. Mouri, K. Korsman, H. Huhma
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