1 edition of Lead isotope constrains on the petrogenesis of the Mount Brome Alkaline Complex found in the catalog.
Lead isotope constrains on the petrogenesis of the Mount Brome Alkaline Complex
|LC Classifications||QE 193 W467 1994 thessis|
|The Physical Object|
|Number of Pages||132|
Lurie J () Mineralization of the Pilanesberg Alkaline Complex. In: Anhaeusser CR, Maske S (eds) Mineral deposits of Southern Africa, Vol II, Geol Soc S Afr, pp – Google Scholar Macey P. Harris C () Stable isotope and fluid inclusion evidence for the origin of the Brandberg West area Sn-W vein deposits, NW Namibia. Isotope Sm–Nd studies of dunites, harzburgites, and orthopyroxenites from the central part of the complex have been carried out. The isochron Sm–Nd age on 11 whole-rock samples from a rhythmically layered series of the complex is ± 38 Ma; the mineral Sm–Nd isochron for harzburgites shows the age of ± 38 Ma.
Constraints on the genesis of lode-style tin mineralization: evidence from the San Rafael tin-copper deposit, Peru. Ph.D., p. Ault, K.M. (). Geochemistry, physiochemical controls, and genesis of the El Mochito Zn-Pb-Ag skarn-hosted deposit, Honduras. Book Chapter (14) Article Type. Facet list. Research Article isotopes carbon C/C (1) chemical ratios (3) alkaline earth metals strontium Sr/Sr
Wang W, Liu SW, Wilde SA, Li QG, Zhang J () Petrogenesis and geochronology of Precambrian granitoid gneisses in Western Liaoning Province: constraints on Neoarchean to early paleoproterozoic crustal evolution of the North China Craton. Precambr Res –– CrossRef Google Scholar. Chen W, Kamenetsky VS, Simonetti A, 'Evidence for the alkaline nature of parental carbonatite melts at Oka complex in Canada', Nature Communications, 4 Article ISSN () [Refereed Article] DOI: /ncomms Citations: Scopus - 30 Web of Science - Tweet.
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Open-System, Sub-Volcanic Magmatic Evolution: Constraints on the Petrogenesis of the Mount Brome Alkaline Complex, Canada.
JIANGFENG CHEN, C. HENDERSON, Petrogenesis of the Ulungur Intrusive Complex, NW China, and Implications for Crustal Generation and Reworking in Accretionary Orogens Carbon-strontium isotope decoupling in. Chen J, Henderson CMB, Foland KA. Open-system, sub-volcanic Magmatic evolution:Constraints on the petrogenesis of the Mount Brome Alkaline Complex, Canada.
Journal of Petrology 35 (4): Crossref, Google by: The petrogenesis of Abu Khruq, an 89 Ma alkaline ring complex of eastern Egypt which is composed of alkali gabbros and both silica over- and undersaturated syenites, has been investigated.
Major and trace element relationships and Nd and Sr isotope data are consistent with formation of the gabbros from an alkaline mafic magma that experienced extensive fractionation, and all syenites from Cited by: Lead isotope constrains on the petrogenesis of the mount brome alkaline complex / Article.
Wen. Dong. Thesis (M.S.)--Ohio State University, Includes bibliographical references (leaves ). on the petrogenesis of the Mount Brome alkaline c omplex, Canada, Journal of Petrology, v.
35, p. Chen, W., and Simonetti, A.,In - si tu determination of major and trac e Author: Nelson Eby. The Mount Brome alkaline complex of southern Quebec (Canada) comprises gabbroic to silica-oversaturated and -undersaturated felsic rocks which have variable initial 87Sr/86Sr and Nd/Nd.
Lead isotopes in tap water: Implications for Pb sources within a municipal water supply system An alkaline gabbro from the Brome complex, in Quebec, contains abundant biotite that is highly.
Mounts Brome and Shefford are located approximately 80 km east of Montreal. The dominant rock type at Mount Shefford is a diorite which has been intruded by arcuate bodies of pulaskite and. The prevalent contribution of the HIMU component in the Adriatic mantle sources is more evident in alkaline magmas, and particularly in the Mount Queglia dikes (Bianchini et al., ), which are characterized by Pb/ Pb between and On the other hand, Veneto volcanic province subalkaline basalts are slightly displaced toward.
The White Mountain granitoid suite is an Early Cretaceous plutonic body located south of the Denali fault within the Wrangellia Composite us studies of plutonic rocks in this area are limited to reconnaissance-scale mapping and associated K-Ar investigations (e.g., Richter et al., ; Lowe et al., ), whereas geochemical and Sr and Nd isotopic studies aimed at addressing.
The petrogenesis of the Pridoli to Early Lochkovian granites in the Miramichi Highlands of New Brunswick, Canada, is controversial. This study focuses on the Pridoli Nashwaak Granite (biotite granite and two-mica granite).
In situ trace elements and O and Hf isotopes in zircon, coupled with O isotopes in quartz, are used to reveal its magmatic sources and evolution processes. Long-lived alkaline complexes (∼15 Ma) have been documented in East Greenland (Kangerlussuaq complex; Riishuus et al., ) and southern Brazil (Lages complex; Morbidelli et al., ); and (ii) they originate from the same source (see Section below), even if the alkalinity and the silica content of the parental magma have been modified.
A major problem in studying the genesis of Phlegrean Volcanic District magmatism is that erupted magmas are variably evolved, and very few rocks are possibly representative of near-primary melts (Beccaluva et al., ; D'Antonio et al., a).Indeed, low-pressure evolution processes, such as fractional crystallization and mixing-mingling, have surely modified trace-element distributions and.
The Kounrad region, located in the western CAOB (Fig. 1a, b), has a number of porphyry type deposits, such as the Kounrad Cu deposit (> Mt Cu, Kudryavtsev, ), the Borly Cu–Mo deposit (> Mt Cu, Chen et al., ), and the East Kounrad Mo deposit (> Mt Mo, Sinclair, ) ().Our new SIMS U–Pb zircon geochronology, together with recently reported data (Chen et al.
A decoupling between trace-element and Sr isotope variations among the Aeolian calc-alkaline and high-K calc-alkaline rocks has been also observed (Figs.
6 and 7) and explained by the combination of the two types of mass transfer from the subducted slab to the mantle wedge with inter-related genetic processes (Francalanci et al., b, a. The present study was carried out at the Bureya River area in the northern part of the Bureya Block ().The outcropping units include the Tulovchikha Complex, Nyatygran Complex, and voluminous Paleozoic to Early Mesozoic plutonic–volcanic assemblages (Fig.
2; Sorokin et al., ).The Tulovchikha Complex, traditionally described as the lower part of the supposed Archean to. As presented by whole-rock lead isotope analysis, the Pb/ Pb of Pb isotopic composition of the biotite granites from Gaudeanmus area is –, and the value of Pb/ is –, while Pb/ Pb is – Isotope ratios of Pb in biotite granite samples are greater than for common Pb.
In connection with the petrogenesis of these highly alkaline rocks it has been shown (D.H. Green, ) that the presence of H 2 0 in the melt phase can exert a strong influence on the sequence of fractionating phases in the liquidus^olidus interval.
Upper Paleozoic (~ Ma) mafic and intermediate volcanic rocks of the Piskahegan Group constitute a subordinate part of the Mount Pleasant caldera, which is associated with a significant polymetallic deposit (tungsten–molybdenum–bismuth zones ~ 33 Mt ore with % W, % Mo and % Bi and tin–indium zones ~ Mt with % Sn and g/t In) in southwestern New.
Cristina Perinelli, Pietro Armienti, Luigi Dallai, Geochemical and O-isotope constraints on the evolution of lithospheric mantle in the Ross Sea rift area (Antarctica), Contributions to Mineralogy and Petrology, /s,3, (), (). Late Mesozoic intermediate–felsic volcanics and hypabyssal intrusions are common across the western slope of the Great Xing’an Range (GXAR).
Spatiotemporally, these hypabyssal intrusions are closely associated with epithermal Pb–Zn polymetallic deposits.
However, few studies have investigated the petrogenesis, contributions and constraints of these Pb–Zn polymetallic mineralization.M. Muñoz, R. Charrier, C. M. Fanning, V. Maksaev, K. Deckart, Zircon Trace Element and O–Hf Isotope Analyses of Mineralized Intrusions from El Teniente Ore Deposit, Chilean Andes: Constraints on the Source and Magmatic Evolution of Porphyry Cu–Mo Related Magmas, Journal of Petrology, Vol Issue 6, JunePages –, https.Van Wyck, N and Johnson, CM () Common lead, Sm-Nd, and U-Pb constraints on petrogenesis, crustal architecture, and tectonic setting of the Penokean orogeny (Paleoproterozoic) in .