The generation and crystallization conditions of the Proterozoic Harney Peak Leucogranite, Black Hills, South Dakota, USA: petrologic and geochemical constraints

Article Abstract:

Experimental phase equilibria was factored in the mineralogical, petrologic and geochemical study of granite samples from Black Hills, South Dakota to determine constraints on rock formation especially along the margin of the principal pluton. The intrusion of hot melts may have influenced the melting of schists such that melts with high biotite and low titanium contents were produced. On the other hand, crust melting along a vertical section may have produced the various granite types in the area.

Environmental aspects, Petrogenesis

---

The Hohonu Batholith of North Westland, New Zealand: granitoid compositions controlled by source H2O contents and generated during tectonic transition

Article Abstract:

Two chemically related granitoid suites belonging to the mid Cretaceous were found at the Hohonu Batholith of North Westland, New Zealand. The two suites were produced during a period of rapid tectonic transition and can be distinguished through their Al2O3, Na2O, Sr, Ba, Eu and HREE contents. The differing contents is due to residual formations controlled by differing water contents during melting of a metabasaltic source.

New Zealand

---

The Northeast Kingdom batholith, Vermont: magmatic evolution and geochemical constraints on the origin of Acadian granitic rocks

Article Abstract:

Research describing the Northeast Kingdom batholith of Vermont is presented. Plutons which have evolved from the Devonian period compose the batholith. West Charleston, Echo Pond, Nulhegan, Derby and Willoughby exhibit a vast range of elemental abundances and ratios which support their evolutionary crustal contributions. Trace element differences from quartz gabbro to granite were not conditioned by any single variable.

Vermont, Natural history, Geology, Stratigraphic, Stratigraphy, Devonian period

Similar abstracts:

• Abstracts: Terrane accretion and upward extrusion of high-pressure granulites in the Neoproterozoic nappes of southeast Brazil: Petrologic and structural constraints
• Abstracts: Inversion tectonics and the evolution of the High Atlas Mountains, Morocco, based on a geological-geophysical transect
• Abstracts: Tectonic setting and U-Pb geochronology of the early Tertiary Ladybird leucogranite suite, Thor-Odin-Pinnacles area, southern Omineca belt, British Columbia
• Abstracts: Discussion on indications of glaciation at the base of the Proterozoic Stoer Group (Torridonian), NW Scotland
• Abstracts: Discussion on the erosional and uplift history of NE Atlantic passive margins: constraints on a passing plume

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