Universidade de São Paulo, Rua do Lago. 562 Cidade Universitária. CEP 05508-080 - São Paulo, SP Brasil (moraes (@igc.usp.br): 2 Laboratoire Magmas et ...
C, NICOLLET. Figure 3. Gamet lamellac (dark) within primary Al-rich Opx. Nicols at an oblique angle ; field of view is approximately 2 mm. Si0,. AI203. (Fe, Mgio-.
Apr 23, 2017 - discussion, here we present monazite and zircon LA-ICPMS in situ ... Sil, Crd, Opx # Sp; Sil 1 phenocrysts are surrounded by Spr2+ Crd2 in.
2 Laboratory of Petrology and Chemical Geodynamics, Free University of Brussels - Belgium. 3 Department of Earth Sciences-CNRS URA n°10, University of ...
mineralogical composition (wt%) calculated from chemical analysis of the rock. ... 120, Sites 747, 749 and 750, 54°-59° S) produced transitional pyroxene 2 with ...
A distinctive association of rock types known as the leptyno- amphibolitic complex ... association of acidic and basic rocks, tholeiitic affinities of the basic rocks ...
Aug 20, 2013 - first 3 to 6 km, they are highly serpentinized into lizardite and chryso- tile as a ... vector of trace element transfer through subduction zones until their dehydration ..... color in this figure legend, the reader is referred to the
Dec 23, 2015 - because multiple metamorphic reactions or fluid/rock interactions ..... detector, three thallium acid phthalate crystals were used to simulta-.
Aug 20, 2013 - gabbros), down to 130â160 km (Wunder and Schreyer, 1997), is re- ... do not directly estimate the transfers associated with the different de-.
petrographic analyses demonstrate that the sapphirine-bearing granulite shows ..... Field observations show a transitional contact between sapphir- ine-bearing ...
However, the transition from low-grade to high-grade metamorphic serpentine minerals is poorly constrained. Thermodynamic data predict that above 300 °C,.
minerals (white micas, carbonates, glaucophane) defining the schistosity ..... Gross 25 29. 27. 31 ..... faulting may play a significant role in the end of exhumation.
cal characteristics like the lack of like±like contacts ...... Powder Metallurgy 22, 119±123. ... and rheology of deformed granite, Erzgebirge, Bohemian Massif.
Laborntoire de Gtologie, U M R 6224, Uiiiuersitt Clerniont TI, 5 Rue Kcsslcr , 63038. Clemiont- Fermnd ... (Mnniiscript receivcd September 7, 1998; accepted April 6, 7999). Abstract .... tectonic analysis including SPOT image studies and field invest
1, Massif volcanique r~cent de l'Ankaratra; 2, charnockites de Betafo; 3, ..... burial followed by progressively slower isostatic uplift {after England and Thomp-.
During oceanic mantle hydration and alteration, they trap fluid mobile elements and then play a major role in the fluid and elemental transfer occurring between.
D~partement de G~ologie, 5, Rue Kessler, UA 10, Clermont-Ferrand, 63038 (France). (Re~u le 7 ... bleus actuellement h l'affieurement ont entre. 50 et 100 Ma, ...
2.54. 2.52. 2.63. K:O. 1.33. 1.50. 0.88. 0.72. 0.90. 0.86. P205. 0.47. 1.24. 0.55. 0.52. 0.42. 0.16 ..... and P205 (>0.3%; average 0.59%) than the second group ...
Nov 15, 2006 - genesis is thus one of the main tools to shed light upon the processes ..... 1922; Kossel 1927; Stranski 1928), such as that pro- posed by .... olivine surface nucleation growth continuous growth. (010). (110). (021). -. (001).
ditions of about 4â5kbar, 500â800 ...... dated at about 500 Ma displaying the same PâT con- ..... de Wit, M.J., Bowring, S.A., Ashwal, L.D., Randrianasolo, L.G.,.
inconsistent with the geochronological constraints: emplacement of the gabbro at 490 Ma and high pressure metamorphism at 410 Ma. In order to reconcile ...
the Sumail massif drilled 400 m to sample the dike â gabbro transition that corresponds to the top. (gabbros) and roof (dikes) of the axial magma chamber, ...
