greenschist facies
Deformation of feldspar at greenschist facies conditions – the record of mylonitic pegmatites from the Pfunderer Mountains, Eastern Alps
... The extrapolation of experimental flow laws for disloca- tion creep of quartz to natural conditions is found to agree well with natural observations (e.g. Stöckhert et al., 1999; Hirth et al., 2001; Stipp et al., 2002). ...
22
Application of titanium-in-quartz thermobarometry to greenschist facies veins and recrystallized quartzites in the Hs¨uehshan range, Taiwan
... Abstract. The accuracy, reliability and best practises of Ti- in-quartz thermobarometry (TitaniQ) in greenschist facies rocks have not been established. To address these issues, we measured Ti ...
21
Brittle–viscous deformation of vein quartz under fluid-rich lower greenschist facies conditions
... Abstract. We studied by Electron BackScatter Diffraction (EBSD) and optical microscopy a coarse-grained (ca. 0.5– 6 mm) quartz vein embedded in a phyllonitic matrix to gain insights into the recrystallization mechanisms ...
19
Incidence of Gold in Subgreenschist to Greenschist Facies Metabasalt of Bhowali, Nainital District, Uttaranchal
... Similar hydrothermal monazite (Ce) in gold deposits from albitised rocks is reported from Sudbury Complex, Ontario, Canada (Schandl et al. Presence of jarosite in these rocks ind[r] ...
5
Genesis of Two Types of Carbonaceous Material and Associated with Gold Mineralization in the Bumo Deposit, Hainan Province, South China
... by greenschist facies- to amphibolite-facies metamophic rocks of the Paleo- to Mesoproterozoic Baoban Group and by auriferous veins and is used as an important gold prospecting ...
15
Geologic Map and Structural Development of the Noerthernmost Sur-Nacimiento Fault Zone, Central California Coast
... South of McWay Falls, lower Big Creek conglomerate was observed on hillslopes east of Highway 1, where they have been mapped extensively in pre- vious studies (Hall, 1991; Dibblee and Minch, 2007a, 2007b), although ...
17
Reconnaissance Geology of the Frenchman's Cap National Park
... In common with adj acent areas to the north Spry 1963; Spry and Gee 1964, the structural succession in this area appears to have the relatively high grade upper greenschist facies Frankl[r] ...
5
Geochemistry and geochronology of palaeoproterozoic Fe rich tholeiites and metasediments from the Georgetown Inlier, North Queensland : their petrogenesis, metamorphic history, tectonic setting, and implications for relationship with the Broken Hill and Mt Isa sequences
... The Dead Horse Metabasalt lies between the Daniel Creek and Corbett Formations, and consists of several hundred metres of metamorphosed mafic pillow lava, hyaloclastic breccia and structureless, massive aphanitic flows, ...
292
Metamorphic sole of the Papuan Ultramafic Belt ophiolite : field mapping, petrochemistry, geochemistry, geochronology and associated reconnaissance experimental studies on boninite genesis
... c=J harzburgite; PUB ophiolite granulite, amphibolite; Metamorphic sole epidote amphibolite and greenschist facies metabasites; Emo Metamorphics Miocene biotite-hornblende plagioclase po[r] ...
235
The role of evaporites in the formation of gems during metamorphism of carbonate platforms: a review
... the greenschist to the granulite ...the greenschist facies (Colombian and Afghan emeralds) and with huge fluid-rock metasomatic interactions, or sulphurous fluids (ruby, garnet tsavorite, zoisite ...
47
Insights on high-grade deformation in quartzo-feldspathic gneisses during the early Variscan exhumation of the Cabo Ortegal nappe, NW Iberia
... deduction of the tectonic evolution in the gneisses is based on newly observed structural relationships, recent Uranium- lead (U-Pb) ages, and is supported by geothermobarome- try data from previous studies in the ...
20
The mid-Cenomanian eustatic low
... But the Thatcher Limestone in Colorado rests on a deeper water facies; the base of the Tarrant Formation rests on a distinctly shal- lower water facies in the Woodbine Fo[r] ...
17
Lithofacies Analysis and Petroleum Potentials of Parts of Ikom-Mamfe Embayment, South-Eastern Nigeria
... the facies succession starts with the massive pebbly sandstone facies (A) at the base, followed by trough and planner cross bedded sandstone facies (B) and (C), medium to coarse grained sandstone ...
12
Facies Analysis, Depositional Environment and Diagenetic Features of the Qom Formation in the Saran Semnan, Central Iran
... Reconstruction and modeling of the Qom Formation, by looking at the Walter law (Walter’s Law, 1985), based on field and laboratory exploration, and comparing them with of recent and ancient sedimentary environments [25] ...
14
Facies Development and Depositional Environment of the Patherwa Formation (Semri Group), Son Valley, India
... Azimuthal data of cross-bedded sandstone facies (St-, Sp- and (S-hb)-facies) were measured where cross-bed- ding surfaces are properly exposed or could be reliably reconstructed. The azimuthal data recorded ...
11
Submarine volcanism and alteration in the Cambrian, northern Central Volcanic Complex, western Tasmania
... In this section, diagenetic alteration facies in the northern Central Volcanic Complex east of the Mount Black Faulr are compared with footwall hydrothermal alteration facies associated [r] ...
55
The middle–upper Cenomanian of Zilly (Sachsen- Anhalt, northern Germany) with remarks on the Pycnodonte Event
... STRATIGRAPHIC INTERPRETATION: Only an inte- grated stratigraphic approach enabled the integration of the Zilly section into the Cenomanian stratigraphic framework (Text-fig. 6). From a lithostratigraphic view- point, the ...
15
Analysis of different statistical models in probabilistic
... logged porosity values (black line). c) Posterior distribution for litho-fluid facies. d) Actual facies 282. profile derived from well log information. e) MAP solution for the facies cl[r] ...
19
Volcanic facies architecture and evolution of Milos, Greece
... The principal volcanic facies are 1 coherent rhyolite, dacite, andesite, basaltic andesite Oavas, domes, cryptodomes, dykes and sills, and associated autedastic facies autobreccia, hyalo[r] ...
268
Fiamme textures in volcanic successions: Flaming issues of definition and interpretation
... this facies, the continuity and undisturbed state of the bedding in the siltstone and the relatively good sorting of the siltstone support the interpretation that the fiamme–siltstone breccia facies ...
12