'Mantle source' diaporamas de présentation

Sudbury

470 views • 23 slides

Magma Types Based on Chemistry

Magma Types Based on Chemistry. 50% SiO 2. 60% SiO 2. 70% SiO 2. gabbro/basalt. diorite/andesite. granite/rhyolite. Processes That Change Magma Compositions. Primary Process ? Partial Melting of Different Materials (e.g. mantle, oceanic crust, continental crust, etc.)

1.46k views • 23 slides

KOMATIITES

KOMATIITES. Jingao Liu March 3 rd ,2008. Origin of its name. Komatiites are ultramafic mantle-derived volcanic rocks Named from their type locality along the Komati River in South Africa. http://www.univie.ac.at/earth-sciences/image/lehramt_808031/lade_1/03.jpg. www.komatigorge.co.za/.

2.51k views • 18 slides

285 views • 15 slides

The mass of continental crust has not changed significantly since the early Archean

The mass of continental crust has not changed significantly since the early Archean. The mass of continental crust has not changed significantly since the early Archean. Proto-Archean. Formation of continental crust. Differenciation of primitive mantle. Enriched continental crust.

262 views • 12 slides

David J. Springer, College of the Redwoods, 1211 Del Mar Drive, Fort Bragg, California 95437

David J. Springer, College of the Redwoods, 1211 Del Mar Drive, Fort Bragg, California 95437 springer@mcn.org.

186 views • 1 slides