An experimental investigation of the P-T stability of Mg-staurolite in the system MgO-Al2O3-SiO2-H2O

Article Abstract:

A study to reassess the stability of Mg-staurolite and clarify inconclusive findings obtained from experiments done by Schreyer in 1968 is given. In these experiments, the metastable growth of Mg-staurolite should not have been neglected since kyanite + periclase + spinel was used in the initial assemblage. The phase relationships for Mg-staurolite at 90 kbar is not accurate because the experiments were carried out at pressures not greater than 25 kbar. Staurolite is a mineral with abundant divalent iron but few divalent cations found in medium-grade metapelites.

Minerals (Geology), Rock-forming minerals

---

U-Pb ages and tectonomagmatic relationships of early Ordovician low-Ti tholeiites, boninites and related plutonic rocks in central Newfoundland, Canada

Article Abstract:

The U-Pb ages and tectonomagnetic relationships of the geochemical composition and postulated tectonic settings of early Ordovician low-Ti tholeiites, boninites and other plutonic rocks in central Newfoundland were investigated. Experimental results showed that the South Lake Igneous Complex (SLIC) terrane is earliest Ordovician in age and genetically associated with a discrete sequence of volcanic rocks in the Wild Bight Group (WBG). It was also found that the older WBG sequence and SLIC are related to ophiolitic rocks found in the Exploits subzone.

Natural history, Geology, Stratigraphic, Stratigraphy, Newfoundland and Labrador, Ordovician period

---

Similar abstracts:

• Abstracts: Experimentally derived thermochemical data for pargasite and reinvestigation of its stability with quartz in the system Na2O-CaO-MgO-Al2O3-SiO2-H2O
• Abstracts: Frequency-dependent disease transmission and the dynamics of the 'Silene-Ustilago' host-pathogen system
• Abstracts: Convective crystal dissolution. A fluid inclusion and stable isotope study of 200 Ma of fluid evolution in the Galway Granite, Connemara, Ireland
• Abstracts: An experimental study of two garnet pyroxenite xenoliths from the Bullenmeri and Gnotuk Maars of western Victoria, Australia. part 2

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.