Results 51 to 60 of about 479 (172)
Igneous and metamorphic processes in the Shap Granite and its aureole [PDF]
, 1986 The Shap Granite outcrops in eastern Cumbria, N.W. England and is a post—orogenic granite intruded during the Lower Devonian (ie 394 Ma) into rocks of Ordovician to Siturian age.
Caunt, Stephen Lloyd
core
Indoor radon in houses built on gravel and sand deposits in southern Finland [PDF]
Bulletin of the Geological Society of Finland, 1993 Studies by the Finnish Centre for Radiation and Nuclear Safety (STUK) have shown that, in Finland, indoor radon concentrations are almost twice as high in houses built on sand or gravel as in houses built on other soil types. The aim of this study was to
K.-L. Hutri, I. Mäkeläinen
doaj +1 more source
Genèse d'un granite Rapakivi par transformation de grès arkosiens Lavras : Rio Grande do Sul, Brésil
, 1962 Goñi Juan C. Genèse d'un granite Rapakivi par transformation de grès arkosiens Lavras : Rio Grande do Sul, Brésil. In: Bulletin de la Société française de Minéralogie et de Cristallographie, volume 85, 1, 1962. pp.
Goñi, Juan
core +1 more source
Brazilian Journal of Geology, 2018 : The Itatiaia Alkaline Massif comprises some of the largest meso-cenozoic alkaline igneous occurrences in Brazil, covering over 215 km2 between the states of Minas Gerais and Rio de Janeiro. It appears as an elongated, 30-km long and 4.5-11.5-km wide SE-
Pedro Augusto da Silva Rosa +1 more
doaj +1 more source
Geologica Acta, 2007 Two magmatic rock suites are distinguished in the Late Precambrian basement of the Southern Sinai (NW Arabian-Nubian Shield, Egypt), namely (a) a calc-alkaline suite, and (b) an alkaline suite.
M.K. Azer
doaj +1 more source
Processes of granite emplacement: NW Ireland and SE Brazil [PDF]
, 1997 This thesis is a study of some of the processes which operate at mid crustal levels (10- 20km) during the emplacement of granitoid magmas, with particular reference to the process of in-situ expansion and the association between magma emplacement and ...
Molyneux, Simon J.
core
Age and isotopic fingerprints of some plutonic rocks in the Wiborg rapakivi granite batholith with special reference to the dark wiborgite of the Ristisaari Island [PDF]
Bulletin of the Geological Society of Finland, 2014 The mid-Proterozoic, locus classicus Wiborg rapakivi granite batholith of southeastern Finland and adjacent Russia comprises a varying, bimodal (silicic-basic) sequence of plutonic, subvolcanic, and volcanic rocks. At the current level of erosion silicic
O.T. Rämö +5 more
doaj +1 more source
Journal of the Geological Survey of Brazil, 2019 The study of granite rocks is important in order to understand chemical evolution of the continental crust. Their isotopic composition provides information on their magmatic sources, whether being mantle, crust or a mixture of both.
Beatriz Pereira Debowski +4 more
doaj +1 more source
Геодинамика и тектонофизика, 2020 Among the Riphean–Vendian dyke complexes of the basic composition, which intersect the Precambrian strata of the Bashkirian meganticlinorium (Southern Urals), one of the most common is the Kurgas gabbro-dolerite complex dated to the Early – Middle ...
A. O. Khotylev +4 more
doaj +1 more source
Petrology of Malin Rapakivi Granite Massif (Korosten Pluton, Ukraine)
, 2009 Приведены новейшие данные по петрологии Малинского массива гранитов рапакиви, расположенного в слабо изученной юго-восточной части Коростенского плутона. На основании изучения условий залегания, структурно-текстурных особенностей и вещественного состава
Билан, Е.В. +2 more
core +1 more source