Istituto Nazionale di GEOFISICA e VULCANOLOGIA The GaME workshop: " Gases in Magmatic Evolution: from depth to atmosphere, from micro to macro-scale, from calculation to observation " " Flory-Huggins, Quasi-Chemical and Polymeric model analogies in the treatment of reactivity and mixing properties of melts " 10:10-10:30: Christian De Capitani (Univ. Basel, Switzerland) " The Computation of Equi...

introduction the senj deposit has significant potential for different types of mineralization, particularly porphyry-like cu deposits, associated with subduction-related eocene–oligocene calc-alkaline porphyritic volcano-plutonic rocks. the study of fluid inclusions in hydrothermal ore deposits aims to identify and characterize the pressure, temperature, volume and fluid composition, (ptx) cond...

Zircons are crucial to understanding the first 500 Myr of crustal evolution of Earth. Very few zircons of this age (>4050 Ma) have been found other than from a ~300 km diameter domain of the Yilgarn Craton, Western Australia. Here we report SIMS U-Pb and O isotope ratios and trace element analyses for two ~4100 Ma detrital zircons from a Paleozoic quartzite at the Longquan area of the Cathaysia...

Nearly forty years after the return of the first lunar samples to Earth, improvements in laboratory detection limits made possible the first definitive discovery of magmatic water in lunar volcanic samples. The intervening decade has seen an exponential increase in the amount of data on the abundance of magmatic water, and its hydrogen isotope composition, in various rock types recovered from t...

Stratigraphic data and ^Ar-39Ar ages for the Early Cretaceous ParaniEtendeka flood basalts indicate that the main magmatic episode lasted for several m.y. (129-134 Ma) and was linked to the northward opening of the South Atlantic Ocean, but with some earlier magmatism (135-138 Ma) found inland far from the eventual oceanic rift. The regional distribution of distinct high-TiN (Urubici, Pitanga, ...

OVERVIEW On Earth, natural glasses are typically produced by rapid cooling of melts, and as in the case minerals rocks, can provide key information on evolution Earth. However, products not solely terrestrial, different formation mechanisms give rise to a variety amorphous materials. In this chapter, we an overview non-magmatic origin their mechanisms. We focus formed other than magmatic activi...

The oxygen and hydrogen isotope composition of hydrothermal fluids associated with the Variscan granites of southwest England has been inferred from analysis of various silicate minerals (predominantly quartz) and by direct analysis of fluid inclusions within quartz and fluorite. These data have been combined with the results of a fluid inclusion study to develop a model for the origin and evol...

[1] Orogens with multiple (ultra)high-pressure ((U)HP) and (ultra)high-temperature ((U) HT) metamorphic events provide a complex but telling record of oceanic and continental interaction. The Early Paleozoic history of the “Heart of China,” the Qinling orogenic collage, offers snapshots of at least three (U)HP and two (U)HT metamorphic events. The preservation of remnants of both oceanic and co...