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Article: Onramping of cold oceanic lithosphere in a forearc setting: The Southeast Bohol Ophiolite complex, Central Philippines

TitleOnramping of cold oceanic lithosphere in a forearc setting: The Southeast Bohol Ophiolite complex, Central Philippines
Authors
Issue Date2001
PublisherTaylor & Francis Inc. The Journal's web site is located at http://www.tandf.co.uk/journals/TIGR
Citation
International Geology Review, 2001, v. 43 n. 9, p. 850-866 How to Cite?
AbstractGeochemical and mineralogical data show that the Early Cretaceous Southeast Bohol Ophiolite Complex on Bohol island, Central Philippines, was generated in a subduction-related marginal basin. The volcanic-hypabyssal rocks show negative Nb, Zr, and Ti anomalies, suggesting an island-arc affinity. This signature is consistent with the high anorthite contents of the gabbro and norite plagioclases, although the ultramafic rocks contain low XCr [Cr/(Cr + Al) < 0.60] spinels. The ophiolite is thrust on top of a tectonic mélange, the Cansiwang Mélange, which in turn is thrust over the Alicia Schist, a metamorphosed oceanic crust sliver made up of chlorite schist, amphibolite schist, and quartz-sericite schist. The presence of serpentinite between the ophiolite and the Alicia Schist indicates that the amphibolite schist cannot represent the emplacement-related metamorphic sole of the Southeast Bohol Ophiolite Complex. The composition of the associated serpentinite sole (Cansiwang Mélange) of the ophiolite complex suggests that this crust-mantle sequence was emplaced at a relatively low temperature (<500°C). The onramping of the Southeast Bohol Ophiolite Complex as a forearc ophiolite, followed by its collision and suturing with the Alicia Schist, occured during the Late Cretaceous. This ophiolite could represent a fragment of the Cretaceous proto-Philippine Sea plate.
Persistent Identifierhttp://hdl.handle.net/10722/72893
ISSN
2015 Impact Factor: 2.365
2015 SCImago Journal Rankings: 1.248
References

 

DC FieldValueLanguage
dc.contributor.authorYumul, GPen_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorTamayo, RAen_HK
dc.contributor.authorMaury, RCen_HK
dc.contributor.authorFaustino, DVen_HK
dc.contributor.authorOlaguera, FOen_HK
dc.contributor.authorCotten, Jen_HK
dc.date.accessioned2010-09-06T06:46:06Z-
dc.date.available2010-09-06T06:46:06Z-
dc.date.issued2001en_HK
dc.identifier.citationInternational Geology Review, 2001, v. 43 n. 9, p. 850-866en_HK
dc.identifier.issn0020-6814en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72893-
dc.description.abstractGeochemical and mineralogical data show that the Early Cretaceous Southeast Bohol Ophiolite Complex on Bohol island, Central Philippines, was generated in a subduction-related marginal basin. The volcanic-hypabyssal rocks show negative Nb, Zr, and Ti anomalies, suggesting an island-arc affinity. This signature is consistent with the high anorthite contents of the gabbro and norite plagioclases, although the ultramafic rocks contain low XCr [Cr/(Cr + Al) < 0.60] spinels. The ophiolite is thrust on top of a tectonic mélange, the Cansiwang Mélange, which in turn is thrust over the Alicia Schist, a metamorphosed oceanic crust sliver made up of chlorite schist, amphibolite schist, and quartz-sericite schist. The presence of serpentinite between the ophiolite and the Alicia Schist indicates that the amphibolite schist cannot represent the emplacement-related metamorphic sole of the Southeast Bohol Ophiolite Complex. The composition of the associated serpentinite sole (Cansiwang Mélange) of the ophiolite complex suggests that this crust-mantle sequence was emplaced at a relatively low temperature (<500°C). The onramping of the Southeast Bohol Ophiolite Complex as a forearc ophiolite, followed by its collision and suturing with the Alicia Schist, occured during the Late Cretaceous. This ophiolite could represent a fragment of the Cretaceous proto-Philippine Sea plate.en_HK
dc.languageengen_HK
dc.publisherTaylor & Francis Inc. The Journal's web site is located at http://www.tandf.co.uk/journals/TIGRen_HK
dc.relation.ispartofInternational Geology Reviewen_HK
dc.titleOnramping of cold oceanic lithosphere in a forearc setting: The Southeast Bohol Ophiolite complex, Central Philippinesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0020-6814&volume=43&spage=850&epage=866&date=2001&atitle=Onramping+of+Cold+Oceanic+Lithosphere+in+a+Forearc+Setting:+The+Southeast+Bohol+Ophiolite+Complex,+Central+Philippinesen_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0035705070en_HK
dc.identifier.hkuros71258en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035705070&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issue9en_HK
dc.identifier.spage850en_HK
dc.identifier.epage866en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYumul, GP=7003858862en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridTamayo, RA=6701447282en_HK
dc.identifier.scopusauthoridMaury, RC=7005803013en_HK
dc.identifier.scopusauthoridFaustino, DV=6508199541en_HK
dc.identifier.scopusauthoridOlaguera, FO=21743456600en_HK
dc.identifier.scopusauthoridCotten, J=7006256446en_HK

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