Apatite minerals of I-type Zouzan granitoids and typical garnet-bearing S-type granites have been analyzed by electron microprobe to define trace element concentrations and compare them in different granites. Zouzan granites are composed of apatites with lower Fe, Mn, Na and HREE and higher REE and ∑REE relative to S-type ones. Trace elements abundances of apatite often vary with some parameter...

Mafic volcanism accounts for 80% of magmas erupted on Earth. Although the majority these eruptions are effusive to Strombolian and fountain-fed, large explosive mafic do occur. This work uses deposits pyroclast textures from 12.6 ka Curacautín ignimbrite eruption Llaima volcano constrain conditions that drove this extrapolate findings provide insights into promote large-volume, elsewhere. The (...

[1] Deep aquifers are potential long-term storage sites for anthropogenic CO2 emissions. The retention time and environmental safety of the injected CO2 depend on geologic and physical factors and on the chemical reactions between the CO2, the aquifer water, and the host rocks. The pH buffer capacity of the aquifer water and the acid neutralization potential of the host rocks are important fact...

Introduction: Zircons are difficult to destroy yet can bear witness to the occurrence and sometimes age of major impact events [e.g. 1]. The zirconium mineral record consequently has implications for the tempo and nature of early bombardment and ultimately the evolution of planetary crusts, hydrospheres and life. Recent models that rescale impactor flux according to a saw-tooth decay in lunar i...

The Variscan high-grade metamorphic basement of northern Sardinia and southern Corsica record lower Carboniferous anatexis related to post-collisional decompression the orogen. Migmatites exposed in Punta Bianca locality (Italy) consist quartz + biotite plagioclase K-feldspar orthogneisses, garnet cordierite-bearing diatexite metatexites, derived from metasediments. Field evidence, petrographic...