The origin of brown hornblende in the Artfjället gabbro and dolerites

MT Otten - Contributions to Mineralogy and Petrology, 1984 - Springer
Brown hornblende occurs in minor amounts in the Artfjället gabbro and dolerites, except in
quartz-dolerites where a pale green hornblende occurs. In the gabbro, brown hornblende is …

Melt segregation in deep crustal hot zones: a mechanism for chemical differentiation, crustal assimilation and the formation of evolved magmas

JMS Solano, MD Jackson, RSJ Sparks… - Journal of …, 2012 - academic.oup.com
Mantle-derived basaltic sills emplaced in the lower crust provide a mechanism for the
generation of evolved magmas in deep crustal hot zones (DCHZ). This study uses numerical …

Igneous layering in basaltic magma chambers

O Namur, B Abily, AE Boudreau, F Blanchette… - Layered …, 2015 - Springer
Layering is a common feature in mafic and ultramafic layered intrusions and generally
consists of a succession of layers characterized by contrasted mineral modes and/or mineral …

Proterozoic anorthosite massifs

RF Emslie - The deep Proterozoic crust in the North Atlantic …, 1985 - Springer
Major anorthositic massifs intruded stable cratonic crust in the North Atlantic region about
1.4 to 1.7 Ga ago. Similar (meta-) anorthosite massifs (0.9-1.6 Ga) in Grenville and …

Petrology and chemistry of two “large” granite clasts from the Moon

PH Warren, GJ Taylor, K Keil, DN Shirley… - Earth and Planetary …, 1983 - Elsevier
Pristine granite clasts in Apollo-14 breccias 14321 and 14303 have estimated masses of 1.8
and 0.17 g, respectively. The 14321 clast is∼ 60% K-feldspar and 40% quartz, with traces of …

[PDF][PDF] Evolution of major and trace element composition during melt migration through crystalline mush: implications for chemical differentiation in the crust

JMS Solano, MD Jackson, RSJ Sparks… - American Journal of …, 2014 - ajsonline.org
We present the first quantitative model of heat, mass and both major and trace element
transport in a mush undergoing compaction that accounts for component transport and …

The role of magmatic reaction, diffusion and annealing in the evolution of coronitic microstructure in troctolitic gabbro from Risör, Norway

R Joesten - Mineralogical Magazine, 1986 - cambridge.org
Coronas of symplectic pargasite [XMg= 68, XCa= 69, XSi= 68]+ spinel [SP45] and
orthopyroxene [EN70] separate cumulus plagioclase [AN64] and olivine [FO64] in troctolitic …

Crystallization and compositional convection in a porous medium with application to layered igneous intrusions

RC Kerr, SR Tait - Journal of Geophysical Research: Solid …, 1986 - Wiley Online Library
Growing crystals can provide a local source of buoyancy by depleting melt of certain
chemical components, and vigorous convective motions in the fluid can result. We report a …

Petrogenesis of the Canindé de São Francisco Complex: a major Late Proterozoic gabbroic body in the Sergipe Foldbelt, northeastern Brazil

EP Oliveira, J Tarney - Journal of South American Earth Sciences, 1990 - Elsevier
The large Canindé de São Francisco gabbroic complex, with its associated volcanic units,
has been widely interpreted as a Late Proterozoic island-arc sequence emplaced onto the …

Isotopic age determinations of crystalline rocks of the Upper Harz Mountains, Germany

A Baumann, B Grauert, S Mecklenburg, R Vinx - Geologische Rundschau, 1991 - Springer
Dating of crystalline rocks occurring in the Upper Harz Mountains was carried out by means
of U-Pb isotope investigations on zircons and sphene as well as by Rb-Sr isotope …