The Ronda high temperature peridotite; geochemistry and petrogenesis

Saved in:
Online Access: Get full text
doi: 10.1016/0016-7037(85)90247-9
Authors:Frey, Frederick A.; Suen, C. John; Stockman, Harlan W.
Author Affiliations:Primary:
Mass. Inst. Technol., Dep. Earth, Atmos. and Planet. Sci., Cambridge, MA, United States
Volume Title:Geochimica et Cosmochimica Acta
Source:Geochimica et Cosmochimica Acta, 49(11), p.2469-2491. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037
Publication Date:1985
Note:In English. 106 refs.; illus. incl. 6 tables, sketch map
Summary:Ronda peridotites (S Spain) range from harzburgite to lherzolite with much variation in major oxides and trace elements, which correlate with (pyroxene + garnet)/olivine ratios and olivine compositions. These data indicate variable degrees of melting (approx 0-30%) of homogeneous peridotite, and equilibrium (batch) melting with some incomplete melt segregation. The segregated melts are picritic (12-22% MgO) with REE abundances similar to MORB. Prior to melting the Ronda peridotite (cf. upper mantle) was a source for MORB, and is consistent with a diapiric rise of fertile mantle peridotite yielding residues of garnet lherzolite through local melting near wall-rock, and garnet-free peridotite in the interior, with sub-solidus recrystallization. [R.K.H.]
Subjects:Chemical composition; Genesis; Geochemistry; Igneous rocks; Mantle; Mineral composition; Modal analysis; Peridotites; Petrology; Phase equilibria; Plutonic rocks; Ultramafics; Upper mantle; Europe; Iberian Peninsula; Southern Europe; Spain; Ronda Peridotite; Southern Spain
Abstract Numbers:86M/1980
Record ID:1986017620
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first