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Article: Geology of southeast Bohol, central Philippines: Accretion and sedimentation in a marginal basin
Title | Geology of southeast Bohol, central Philippines: Accretion and sedimentation in a marginal basin |
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Authors | |
Keywords | Accretion Bohol Marginal basin Ophiolite Philippines Stratigraphy |
Issue Date | 2003 |
Publisher | Taylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/08120099.asp |
Citation | Australian Journal Of Earth Sciences, 2003, v. 50 n. 4, p. 571-583 How to Cite? |
Abstract | Recent field mapping has refined our understanding of the stratigraphy and geology of southeastern Bohol, which is composed of a Cretaceous basement complex subdivided into three distinct formations. The basal unit, a metamorphic complex named the Alicia Schist, is overthrust by the Cansiwang mélange, which is, in turn, structurally overlain by the Southeast Bohol Ophiolite Complex. The entire basement complex is overlain unconformably by a ∼2000 m thick sequence of Lower Miocene to Pleistocene carbonate and elastic sedimentary rocks and igneous units. Newly identified lithostratigraphic units in the area include the Cansiwang mélange, a tectonic mélange interpreted as an accretionary prism, and the Lumbog Volcaniclastic Member of the Lower Miocene Carmen Formation. The Cansiwang mélange is sandwiched between the ophiolite and the metamorphic complex, suggesting that the Alicia Schist was not formed in response to emplacement of the Southeast Bohol Ophiolite Complex. The accretionary prism beneath the ophiolite complex and the presence of boninites suggest that the Southeast Bohol Ophiolite Complex was emplaced in a forearc setting. The Southeast Bohol Ophiolite Complex formed during the Early Cretaceous in a supra-subduction zone environment related to a southeast-facing arc (using present-day geographical references). The accretion of this ophiolite complex was followed by a period of erosion and then later by extensive clastic and carbonate rock deposition (Carmen Formation, Sierra Bullones Limestone and Maribojoc Limestone). The Lumbog Volcaniclastic Member and Jagna Andesite document intermittent Tertiary volcanism in southeastern Bohol. |
Persistent Identifier | http://hdl.handle.net/10722/72910 |
ISSN | 2023 Impact Factor: 1.2 2023 SCImago Journal Rankings: 0.462 |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Faustino, DV | en_HK |
dc.contributor.author | Yumul Jr, GP | en_HK |
dc.contributor.author | De Jesus, JV | en_HK |
dc.contributor.author | Dimalanta, CB | en_HK |
dc.contributor.author | Aitchison, JC | en_HK |
dc.contributor.author | Zhou, MF | en_HK |
dc.contributor.author | Tamayo Jr, RA | en_HK |
dc.contributor.author | De Leon, MM | en_HK |
dc.date.accessioned | 2010-09-06T06:46:15Z | - |
dc.date.available | 2010-09-06T06:46:15Z | - |
dc.date.issued | 2003 | en_HK |
dc.identifier.citation | Australian Journal Of Earth Sciences, 2003, v. 50 n. 4, p. 571-583 | en_HK |
dc.identifier.issn | 0812-0099 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/72910 | - |
dc.description.abstract | Recent field mapping has refined our understanding of the stratigraphy and geology of southeastern Bohol, which is composed of a Cretaceous basement complex subdivided into three distinct formations. The basal unit, a metamorphic complex named the Alicia Schist, is overthrust by the Cansiwang mélange, which is, in turn, structurally overlain by the Southeast Bohol Ophiolite Complex. The entire basement complex is overlain unconformably by a ∼2000 m thick sequence of Lower Miocene to Pleistocene carbonate and elastic sedimentary rocks and igneous units. Newly identified lithostratigraphic units in the area include the Cansiwang mélange, a tectonic mélange interpreted as an accretionary prism, and the Lumbog Volcaniclastic Member of the Lower Miocene Carmen Formation. The Cansiwang mélange is sandwiched between the ophiolite and the metamorphic complex, suggesting that the Alicia Schist was not formed in response to emplacement of the Southeast Bohol Ophiolite Complex. The accretionary prism beneath the ophiolite complex and the presence of boninites suggest that the Southeast Bohol Ophiolite Complex was emplaced in a forearc setting. The Southeast Bohol Ophiolite Complex formed during the Early Cretaceous in a supra-subduction zone environment related to a southeast-facing arc (using present-day geographical references). The accretion of this ophiolite complex was followed by a period of erosion and then later by extensive clastic and carbonate rock deposition (Carmen Formation, Sierra Bullones Limestone and Maribojoc Limestone). The Lumbog Volcaniclastic Member and Jagna Andesite document intermittent Tertiary volcanism in southeastern Bohol. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Taylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/08120099.asp | en_HK |
dc.relation.ispartof | Australian Journal of Earth Sciences | en_HK |
dc.subject | Accretion | en_HK |
dc.subject | Bohol | en_HK |
dc.subject | Marginal basin | en_HK |
dc.subject | Ophiolite | en_HK |
dc.subject | Philippines | en_HK |
dc.subject | Stratigraphy | en_HK |
dc.title | Geology of southeast Bohol, central Philippines: Accretion and sedimentation in a marginal basin | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0812-0099&volume=50&spage=571&epage=583&date=2003&atitle=Geology+of+southeast+Bohol,+central+Philippines:+accretion+and+sedimentation+in+a+marginal+basin | en_HK |
dc.identifier.email | Aitchison, JC: jona@hku.hk | en_HK |
dc.identifier.email | Zhou, MF: mfzhou@hkucc.hku.hk | en_HK |
dc.identifier.authority | Aitchison, JC=rp00658 | en_HK |
dc.identifier.authority | Zhou, MF=rp00844 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1046/j.1440-0952.2003.01015.x | en_HK |
dc.identifier.scopus | eid_2-s2.0-0242657367 | en_HK |
dc.identifier.hkuros | 82613 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0242657367&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 50 | en_HK |
dc.identifier.issue | 4 | en_HK |
dc.identifier.spage | 571 | en_HK |
dc.identifier.epage | 583 | en_HK |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Faustino, DV=6508199541 | en_HK |
dc.identifier.scopusauthorid | Yumul Jr, GP=7003858862 | en_HK |
dc.identifier.scopusauthorid | De Jesus, JV=7004066968 | en_HK |
dc.identifier.scopusauthorid | Dimalanta, CB=6602158221 | en_HK |
dc.identifier.scopusauthorid | Aitchison, JC=7102533858 | en_HK |
dc.identifier.scopusauthorid | Zhou, MF=7403506005 | en_HK |
dc.identifier.scopusauthorid | Tamayo Jr, RA=6701447282 | en_HK |
dc.identifier.scopusauthorid | De Leon, MM=8071921600 | en_HK |
dc.identifier.issnl | 0812-0099 | - |