magmatic-hydrothermal
Magmatic hydrothermal volatile exsolution and mineralisation in Tasmanian Sn granites
... distinctive magmatic – hydrothermal features, and some of them produced world class Sn-W ...in magmatic – hydrothermal fluids exsolved from these felsic ...
304
Physicochemical conditions of formation for bismuth mineralization hosted in a magmatic hydrothermal breccia complex: an example from the Argentine Andes
... a magmatic-hydrothermal origin for the breccia ...in hydrothermal fluids, and precipitates as tellurides, triggered by a variety of possible mechanisms ...Te-rich magmatic vapor ...
21
A new methodology for the study of the magmatic hydrothermal transition in felsic magmas: applications to barren and mineralised systems
... From an initial volatile-rich melt, aqueous volatile phases (dominantly vapour) exsolved, forming bubbly magmatic emulsions. Inherently, magmatic emulsions are metastable, and disrupt into discrete melt and ...
25
A new methodology for the study of the magmatic hydrothermal transition in felsic magmas: applications to barren and mineralised systems
... Two case studies contain the bulk of the research in this study, Rio Blanco, Chile, and Okataina, North Island of New Zealand. Each case study begins with a discussion of local and regional geology, to place the study in ...
186
A new methodology for the study of the magmatic hydrothermal transition in felsic magmas: applications to barren and mineralised systems
... of magmatic melt/vapour emulsions, rather than a single melt phase (ie a critical aqueous- silicic fluid, above its second critical ...of magmatic emulsions, which have some properties of a single phase, in ...
152
The Watershed tungsten deposit, NE Queensland, Australia: an example of a Permian metamorphic tungsten upgrade after a Carboniferous magmatic-hydrothermal mineralisation event
... Whole-rock geochemistry of the various rock types within the deposit indicates that the Watershed deposit is characterised by an enrichment of W-Be-B-Sc-Cu-Mo- Re. These elements were probably remobilised from the ...
6
Gold-bismuth occurrences in the Kennedy igneous province, North Queensland: constraints on tectonic, magmatic and hydrothermal processes in intrusion-related gold deposits
... An initial 6 month field project, supported by Teck Cominco, involved visiting Au-Bi occurrences throughout regional north Queensland in order to identify two key research areas to investigate during the thesis project. ...
424
Recognizing and tracking volcanic hazards related to non-magmatic unrest: a review
... The most convincing argument to explain the uplift phases at Campi Flegrei by hydrothermal circulation is an observed time-lapse of ~100 days of increased diffuse de- gassing following the uplift pulses (Chiodini ...
17
Volatile phase separation in silicic magmas at Bajo de la Alumbrera porphyry Cu Au deposit, NW Argentina
... and magmatic-hydrothermal veins (P veins), combined with aqueous fluid phase equilibria from fluid inclusions, better constrain physical models of ...
38
Diversity of Gold Deposits, Geodynamics and Conditions of Formation: A Perspective View
... of magmatic-hydrothermal origin are classified into Porphyry, Epithermal, Skarn, Iron Oxide-Copper-Gold and Intrusion related deposits; those of hydrother- mal origin are Orogenic, Volcanogenic Massive ...
20
Impact of cryogenic cooling during machining: A Literature Review
... of magmatic or magmatic-hydrothermal association are found in rocks of Early to middle Proterozoic age ...of magmatic association has been the subject of much ...(a) hydrothermal ...
6
Seismogenic frictional melting in the magmatic column
... Metre-scale blocks from block-and-ash flow deposits at SHV present the opportunity to study textural and structural infor- mation from conduit and dome material that would other- wise remain inaccessible due to the ...
10
Effects Of Hydrothermal Solutions On Syenogranite, Abu Harba Area, North Eastern Desert, Egypt.
... of hydrothermal solutions and its effect on Abu Harba ...to hydrothermal activity. The effect of hydrothermal solutions is obvious through the mobilization and redistribution of uranium by ...
25
Hydrothermal Pretreatment Enhanced Enzymatic Hydrolysis and Glucose Production from Lignocellulose Biomass
... According to results from hydrothermal treatment, the percentage of cellulose content is as shown in Fig. 1. The Figure shows time versus cellulose percent of the hardwood by using hydrothermal treatment ...
5
Synthesis of global satellite observations of magmatic and volcanic deformation: implications for volcano monitoring & the lateral extent of magmatic domains
... Some of the characteristics of volcanic and magmatic deformation signals measurable with InSAR can be il- luminated by comparison to the properties of deform- ation measured with ground-based instrumentation. ...
26
A cascade of magmatic events during the assembly and eruption of a super-sized magma body
... Extension Extension Taupo magmatic system A Phase 3 vent area A’ Phases 1 and 2 vent area NE dome bt-bearing magmatic system A” 0 Rifting & lateral migration of NEdome-type magma 4 Oruan[r] ...
71
Reaction path models of magmatic gas scrubbing
... comparison of model results with observations from natural systems has been carried out, to date. Here, we present the results of novel numerical simulations, in which we initialized models of hydrothermal ...
48
Charnockite microstructures: from magmatic to metamorphic
... The general absence of a temperature difference between intruding charnockitic magmas and its surroundings in the lower crusts is the prime cause of the ambiguities between a magmatic and metamorphic origin of ...
9
Magmatic record of India Asia collision
... Nianbo Formation of 55.4–52.6 Ma. This is very compatible with the age data obtained from two marl samples (13LZ13-1 and 13LZ14-1) from the lower Nianbo Formation (54.4 ± 0.5 and 54.5 ± 0.7 Ma). Three samples from the ...
8
Magmatic and post-magmatic phenomena in the Karkonosze granite and its metamorphic envelope (West Sudetes, SW Poland)
... Given that diversity, the amphibolites of the Izera- Kowary unit are quite homogeneous in their geochem- ical characteristics. Although the unit is now dismem- bered by the Karkonosze granite (Text-fig. 1), metabasites ...
21