Separation of the Mahabad young basalts, trachytes and trachy-andesites, geochemical and tectono-magmatic setting aspects; necessity of the Mahabad 1:100000 sheet reform

Autor: Monir Modjarrad, Yosef Rahim Souri

Publikováno v: پترولوژی, Vol 10, Iss 1, Pp 97-124 (2019)

In the Mahabad region accompaniment of trachytes and trachy-andesites with OIB-like alkali-basalts are shown. Trachytes at the Soltan Mountain heights, trachy-andesites as darker enclaves in it and alkali-basalts in the three sites, Khatton Bagh, Bar

Externí odkaz: https://doaj.org/article/e9f2a7e1e068481eb3c9295f8f8118d7

U-Pb Age and Geochemistry of the Tholeiitic Trachy-Andesite of Gouveia (MG) Compared with Regional Pedro Lessa and Formiga Tholeiitic Basic Rocks: Fragments of a Tonian Large Igneous Province (LIP)

Autor: Alexandre de Oliveira Chaves, Ivo Antonio Dussin

Publikováno v: Anuário do Instituto de Geociências, Vol 41, Iss 3, Pp 05-15 (2018)

In Gouveia (MG), a tholeiitic high-K trachy-andesitic subvolcanic rock, with phenocrysts of plagioclase and sanidine, and a matrix rich in feldspars, biotite, magmatic epidote and quartz, outcrops in the form of irregular bodies and subverticalized

Externí odkaz: https://doaj.org/article/296f80b9fd9a403d9517ff09bfc6ea63

PETROGRAFIA E LITOQUÍMICA DO MAGMATISMO TARDI-OROGÊNICO TOLEÍTICO ALTO-K E DA SUÍTE PÓS-COLISIONAL ALCALINA SATURADA EM SÍLICA DE GOUVEIA (MG)

Autor: Alexandre de Oliveira Chaves, Raphael Martins Coelho, Friedrich Ewald Renger, Tania Mara Dussin, Maria do Rosário Mascarenhas de Almeida Azevedo, Sara Monteiro Ribeiro

Publikováno v: Geochimica Brasiliensis, Vol 28, Iss 2, Pp 117-130 (2015)

Close to Gouveia town (MG) and located inside granitoids and gneiss of the Gouveia Complex, porphyritic latites (or trachy-andesites) slightly metamorphosed are identified, with plagioclase and sanidine phenocrysts and matrix also feldspar-rich conta

Externí odkaz: https://doaj.org/article/ee700df7910340a4af62e9ca9924366c

ENERGY-DISPERSIVE X-RAY FLOURESCENCE (EDXRF) ANALYSIS OF MAJOR, MINOR AND TRACE ELEMENTS FOR VOLCANIC GLASS ROCKS FROM OAHU COUNTY, HAWAI'I

Autor: Shackley, M. Steven

The analysis here of six vitreous rock samples indicates trachy-andesite and basaltic trachy-andesite glasses according to an alkali/silica plot (Le Bas et al. 1986; Le Maitre et al. 1989; Table 1 and Figure 1 herein). Trachyte glass does occur in na

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::3d8089392bac9f11e1cb27396629f114
https://escholarship.org/uc/item/7mw8s12w

Trace element partitioning between clinopyroxene and trachy-phonolitic melts: A case study from the Campanian Ignimbrite (Campi Flegrei, Italy)

Autor: G. De Astis, Silvio Mollo, Francesca Forni, Piergiorgio Scarlato, Jon D Blundy, Olivier Bachmann

Publikováno v: Lithos
Mollo, S, Forni, F, Bachmann, O, Blundy, J D, De Astis, G & Scarlato, P 2016, ' Trace element partitioning between clinopyroxene and trachy-phonolitic melts : A case study from the Campanian ignimbrite (campi flegrei, Italy) ', Lithos, vol. 252-253, pp. 160-172 . https://doi.org/10.1016/j.lithos.2016.02.024

The partitioning of trace elements between crystals and melts provides an important petrogenetic tool for understanding magmatic processes. We present trace element partition coefficients measured between clinopyroxene phenocrysts and trachy-phonolit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa5cf79a8363d8cba8c6fe255f7abc6c
https://doi.org/10.1016/j.lithos.2016.02.024