Stability and chemical equilibrium of amphibole in calc-alkaline magmas: an overview, new thermobarometric formulations and application to subduction-related …

F Ridolfi, A Renzulli, M Puerini - Contributions to mineralogy and petrology, 2010 - Springer
This work focuses on a rigorous analysis of the physical–chemical, compositional and
textural relationships of amphibole stability and the development of new thermobarometric …

[HTML][HTML] A global review on agpaitic rocks

MAW Marks, G Markl - Earth-Science Reviews, 2017 - Elsevier
Peralkaline igneous rocks are defined by a molar (Na+ K)/Al ratio> 1 and are subdivided into
miaskitic and agpaitic varieties depending on their mineralogy. In the more common …

Calcic amphiboles in calc-alkaline and alkaline magmas: thermobarometric and chemometric empirical equations valid up to 1,130° C and 2.2 GPa

F Ridolfi, A Renzulli - Contributions to Mineralogy and Petrology, 2012 - Springer
The following article presents constraints of the stability of Mg-rich (Mg/(Mg+ Fe 2+)> 0.5)
calcic amphibole in both calc-alkaline and alkaline magmas, testing of previous …

Elemental and Sr–Nd isotope geochemistry of microgranular enclaves from peralkaline A-type granitic plutons of the Emeishan large igneous province, SW China

JG Shellnutt, BM Jahn, J Dostal - Lithos, 2010 - Elsevier
Microgranular enclaves are common within intermediate to felsic granitic rocks that have I-
and S-type affinity however they are rare within alkaline anorogenic granitoids of A-type …

The magmatic feeding system of El Reventador volcano (Sub-Andean zone, Ecuador) constrained by texture, mineralogy and thermobarometry of the 2002 erupted …

F Ridolfi, M Puerini, A Renzulli, M Menna… - Journal of Volcanology …, 2008 - Elsevier
After a 26 years long quiescence El Reventador, an active volcano of the rear-arc zone of
Ecuador, entered a new eruptive cycle which lasted from 3 November to mid December …

[PDF][PDF] Tectono-magmatic evolution of the younger Gardar southern rift, South Greenland

BGJ Upton - GEUS Bulletin, 2013 - core.ac.uk
Geological Survey of Denmark and Greenland Bulletin 29, 2013, 124 pp. Page 1 1
GEOLOGICAL SURVEY OF DENMARK AND GREENLAND BULLETIN 29 • 2013 Tectono-magmatic …

Evidence of crystallization in residual, Cl–F-rich, agpaitic, trachyphonolitic magmas and primitive Mg-rich basalt–trachyphonolite interaction in the lava domes of the …

L Melluso, R De'Gennaro, L Fedele, L Franciosi… - Geological …, 2012 - cambridge.org
The lava domes in the northwestern (Cuma), northern (Punta Marmolite) and central
(Accademia) parts of the Phlegrean Fields are the subject of this study. The Cuma and Punta …

Origin of fluoride and arsenic in the main Ethiopian rift waters

G Bianchini, V Brombin, C Marchina, C Natali… - Minerals, 2020 - mdpi.com
In the Main Ethiopian Rift (MER) area, rural populations often use water that exceeds the
World Health Organization thresholds for fluoride (F–) and arsenic (As), two elements that …

Peralkaline felsic magmatism of the Atlantic Islands

AJ Jeffery, R Gertisser - Frontiers in Earth Science, 2018 - frontiersin.org
The oceanic-island magmatic systems of the Atlantic Ocean exhibit significant diversity in
their respective sizes, ages, and the compositional ranges of their eruptive products …

The crystallization of shoshonitic to peralkaline trachyphonolitic magmas in a H2O–Cl–F-rich environment at Ischia (Italy), with implications for the feeder system of the …

L Melluso, V Morra, V Guarino, R de'Gennaro… - Lithos, 2014 - Elsevier
Bulk-rock and mineralogical characterization of massive samples (lava flows, lava domes,
scoria, spatter), chosen to be representative of different activity periods and of the whole …