Search results for "Lile"
showing 10 items of 78 documents
La gestion du risque dans le programme Galileo
2006
Fyysisen aktiivisuuden yhteydet kuntoutumiseen 2 kk selän välilevytyräleikkauksen jälkeen
2001
The geochemistry of Tl and its isotopes during magmatic and hydrothermal processes: The peralkaline Ilimaussaq complex, southwest Greenland
2014
Abstract We use thallium (Tl) concentrations, K/Rb, K/Tl and Rb/Tl ratios and Tl isotopes in minerals from the alkaline to peralkaline Ilimaussaq complex (South Greenland) to trace magmatic differentiation, crustal assimilation, magmatic degassing, ore precipitation and hydrothermal metasomatism. Closed-system magmatic differentiation is marked by a coherent decrease of K/Tl- and K/Rb-ratios, whereas crustal assimilation results in a strong Tl-enrichment, causing low K/Tl-ratios compared to K/Rb-ratios. Thallium isotopes show only slight changes during orthomagmatic differentiation and the assimilation of crustal material cannot be traced, since the isotopic composition of the average crust…
Record of 1.82 Ga Andean-type continental arc magmatism in NE Rajasthan, India: Insights from zircon and Sm–Nd ages, combined with Nd–Sr isotope geoc…
2009
Abstract We document a Palaeoproterozoic Andean-type continental arc granitoid emplacement event in the northwestern segment of the Aravalli mountain range, NW India. Our study is focused on the Jasrapur pluton which is dominated by monzogranites with a subordinate amount of granodiorite and quartz monzodiorite. These rocks carry typical continental arc geochemical signatures, such as high-K calc-alkaline, mildly peraluminous, I-type and magnesian features, as well as high Rb and low Nb, Y and Rb/Zr ratios, decoupling between LILE and HFSE, and negative Nb–Ta and Ti anomalies. Conventional geothermobarometric estimates suggest high temperature (~ 800 °C) and pressure (≥ 600 MPa) conditions …
Recensione a: Galileo GALILEI, Lettera a Cristina di Lorena, edizione critica a cura di O. Besomi, collaborazione di D. Besomi, versione latina di E.…
2014
Recensione al vol. Galileo GALILEI, Lettera a Cristina di Lorena, ed. critica a cura di O. Besomi, collab. di D. Besomi, vers. lat. di E. Diodati, a cura di G. Reggi, Roma-Padova 2012.
Rhyolitic dykes of Paros Island, Cyclades
2005
Abstract The discovery of rhyolitic dykes from the NE part of the island of Paros is described here for the first time. The dykes that can be mapped for a length of ca. 1.1 km are striking about 6° and 38° NE. The width reaches up to 11m maximum. The rhyolitic rocks are porphyric with a fine-grained matrix of mainly feldspar, quartz, some biotites and opaques. K-feldspar, biotite and plagioclase occur as phenocrysts, and mafic-intermediate enclaves are common. At the chilled margin in contact to the gneissic country rocks the dykes are vitric. There, the enclaves have been preserved from contact reaction with the melt and alteration effects and show primary igneous minerals such as clinopyr…
Mediterranean Tertiary lamproites derived from multiple source components in postcollisional geodynamics
2008
Abstract In the Mediterranean area, lamproitic provinces in Spain, Italy, Serbia and Macedonia have uniform geological, geochemical and petrographic characteristics. Mediterranean lamproites are SiO2-rich lamproites, characterized by relatively low CaO, Al2O3 and Na2O, and high K2O/Al2O3 and Mg-number. They are enriched in LILE relative to HFSE and in Pb, and show depletion in Ti, Nb and Ta. Mediterranean lamproites show huge regional variation of Sr, Nd and 207Pb/204Pb isotopic values, with 87Sr/86Sr range of 0.707–0.722, eNd range from −13 to −3, and 207Pb/204Pb range of 15.62–15.79. Lamproitic rocks are derived from melts with three components involved in their origin, characterized by c…
Orogenic vs anorogenic lamproites in a single volcanicprovince: Mediterranean-type lamproites from Turkey
2008
Lamproites are mantle-derived ultrapotassic volcanic rocks, derived from phlogopite-bearing harzburgitic source. The origin of the metasomatism which enriched their mantle source is either an old event with a metasomatic component derived from the convecting mantle, or is a more recent introduction of an already aged metasomatic component. Together with different trace element signatures, this view serves for a general distinction between anorogenic and orogenic lamproites worldwide. In Turkey, lamproitic volcanism resulted from interplay of subduction/collisional and postcollisional/extensional regime since Miocene until Pliocene, in the Western Anatolia-Aegean and Kirka-Afyon-Isparta regi…
Lapset kielileirillä: iloisia ilmeitä ja hymyjä
2015
Maailman terveysjärjestön WHO:n kouluviihtyvyyttä mittaavista tutkimuksista ilmenee, että mukana olevista 43 maasta Suomi sijoittui sijalle 40 kysyttäessä 11–15-vuotiailta, kuinka moni pitää koulunkäynnistä (HBSC 2010). Suomalaisissa kouluissa ei viihdytä. Tilanne on huolestuttava, sillä koulu on lasten ja nuorten työpaikka, jossa he viettävät vähintään 10 vuotta elämästään. Tässä artikkelissa kuvaamme, kuinka pyrimme purkamaan muun muassa em. tutkimuksessa esiin tullutta kouluun ja oppimiseen liittyvää viihtymättömyyttä kielileireillä, joita järjestämme Jyväskylän yliopiston Kielikampus-yhteistyönä. nonPeerReviewed