Hydrous, silica-rich melts in the sub-arc mantle and their relationship with erupted arc lavas

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doi: 10.1038/377595a0
Authors:Schiano, P.; Clocchiatti, R.; Shimizu, N.; Maury, R. C.; Jochum, K. P.; Hofmann, A. W.
Author Affiliations:Primary:
Institut de Physique du Globe de Paris, Laboratoire de Géochimie et Cosmochimie, Paris, France
Other:
Woods Hole Oceanographic Institution, United States
Université de Bretagne Occidentale, France
Max-Planck-Institut für Chemie, Federal Republic of Germany
Volume Title:Nature (London)
Source:Nature (London), 377(6550), p.595-600. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836
Publication Date:1995
Note:In English. 37 refs.; illus., incl. 2 tables
Summary:Representative analyses are presented of glass inclusions in hydrous xenoliths from Batan Island (Luzon arc, Philippines), which are mainly spinel-bearing harzburgites with olivine, orthopyroxene and characterized by LILE enrichment and negative anomalies in HFSE. Sr, Nd and O isotopic ratios of the xenoliths are similar to those of the host lavas. The hydrous SiO2-rich glass inclusion melts have altered their host peridotites yielding a metasomatized mantle. This 'fertilized' mantle is the source region of arc magmas which share continuous chemical trends with the melt inclusions indicating mixing/melting in varying degrees. The data indicate the importance of slab-mantle interactions in island arc magma genesis. [R.K.H.]
Subjects:Acidic magmas; Basalts; Crust; Geochemistry; Glasses; Hydration; Igneous rocks; Inclusions; Island arcs; Lava; Magmas; Major elements; Mantle; Melts; Metasomatism; Mineral inclusions; Oceanic crust; Peridotites; Plutonic rocks; Silica; Slabs; Trace elements; Ultramafics; Volcanic rocks; Xenoliths; Asia; Bataan Philippine Islands; Far East; Luzon; Philippine Islands
Coordinates:N142000 N145000 E1203500 E1201500
Abstract Numbers:96M/2277
Record ID:1995069283
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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100 1 |a Schiano, P.  |e analytic author  |u Institut de Physique du Globe de Paris, Laboratoire de Géochimie et Cosmochimie, Paris 
245 1 0 |a Hydrous, silica-rich melts in the sub-arc mantle and their relationship with erupted arc lavas 
300 |a p. 595-600 
500 |a In English. 37 refs. 
500 |a Abstract number: 96M/2277 
500 |a Abstractor: R.K.H. 
500 |a Affiliation: Institut de Physique du Globe de Paris, Laboratoire de Géochimie et Cosmochimie; Paris; FRA; France 
500 |a Affiliation: Woods Hole Oceanographic Institution; ; USA; United States 
500 |a Affiliation: Université de Bretagne Occidentale; ; FRA; France 
500 |a Affiliation: Max-Planck-Institut für Chemie; ; DEU; Federal Republic of Germany 
500 |a Key title: Nature (London) 
500 |a Source note: Nature (London), 377(6550), p.595-600. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 
500 |a Publication type: journal article 
504 |b 37 refs. 
510 3 |a GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom 
520 |a Representative analyses are presented of glass inclusions in hydrous xenoliths from Batan Island (Luzon arc, Philippines), which are mainly spinel-bearing harzburgites with olivine, orthopyroxene and characterized by LILE enrichment and negative anomalies in HFSE. Sr, Nd and O isotopic ratios of the xenoliths are similar to those of the host lavas. The hydrous SiO<2`-rich glass inclusion melts have altered their host peridotites yielding a metasomatized mantle. This 'fertilized' mantle is the source region of arc magmas which share continuous chemical trends with the melt inclusions indicating mixing/melting in varying degrees. The data indicate the importance of slab-mantle interactions in island arc magma genesis. 
650 7 |a Acidic magmas  |2 georeft 
650 7 |a Basalts  |2 georeft 
650 7 |a Crust  |2 georeft 
650 7 |a Geochemistry  |2 georeft 
650 7 |a Glasses  |2 georeft 
650 7 |a Hydration  |2 georeft 
650 7 |a Igneous rocks  |2 georeft 
650 7 |a Inclusions  |2 georeft 
650 7 |a Island arcs  |2 georeft 
650 7 |a Lava  |2 georeft 
650 7 |a Magmas  |2 georeft 
650 7 |a Major elements  |2 georeft 
650 7 |a Mantle  |2 georeft 
650 7 |a Melts  |2 georeft 
650 7 |a Metasomatism  |2 georeft 
650 7 |a Mineral inclusions  |2 georeft 
650 7 |a Oceanic crust  |2 georeft 
650 7 |a Peridotites  |2 georeft 
650 7 |a Plutonic rocks  |2 georeft 
650 7 |a Silica  |2 georeft 
650 7 |a Slabs  |2 georeft 
650 7 |a Trace elements  |2 georeft 
650 7 |a Ultramafics  |2 georeft 
650 7 |a Volcanic rocks  |2 georeft 
650 7 |a Xenoliths  |2 georeft 
651 7 |a Asia  |2 georeft 
651 7 |a Bataan Philippine Islands  |2 georeft 
651 7 |a Far East  |2 georeft 
651 7 |a Luzon  |2 georeft 
651 7 |a Philippine Islands  |2 georeft 
700 1 |a Clocchiatti, R.,  |e analytic author 
700 1 |a Shimizu, N.,  |e analytic author 
700 1 |a Maury, R. C.,  |e analytic author 
700 1 |a Jochum, K. P.,  |e analytic author 
700 1 |a Hofmann, A. W.,  |e analytic author 
773 0 |t Nature (London)  |d London : Macmillan Journals, Oct. , 19 1995  |x 0028-0836  |y NATUAS  |n Nature (London), 377(6550), p.595-600. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 Publication type: journal article  |g Vol. 377, no. 6550  |h illus., incl. 2 tables 
856 |u urn:doi: 10.1038/377595a0