Geology and geochemistry of the clastic sequences from Northwestern Panay (Philippines): Implications for provenance and geotectonic setting

Gabo, Jillian Aira S.; Dimalanta, Carla B.; Asio, Mary Grace S.; Queaño, Karlo L.; Yumul, Graciano P.; Imai, Atsushi

doi:10.1016/j.tecto.2009.02.004

Cited by 60 publications

(39 citation statements)

References 43 publications

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“…Two distinct terranes comprise Northwest Panay: the Buruanga Peninsula and the northern part of the Antique Range (Mines and Geosciences Bureau 2004;Zamoras et al 2008;Gabo et al 2009) (Fig. 2).…”

Section: Geological Settingmentioning

confidence: 99%

“…The Buruanga Peninsula dominantly consists of Middle to Late Jurassic chert-clastic-limestone sequences underlain by a basaltic basement and intruded by the Early Miocene Patria Quartz Diorite (Zamoras et al 2008;Gabo et al 2009) (Fig. 2).…”

Section: Geological Settingmentioning

confidence: 99%

“…2). The Nabas Fault was first delineated based on differences in the age, rock types and geochemical composition of the sedimentary packages found in the Buruanga Peninsula and the Antique Range (Zamoras et al 2008;Gabo et al 2009). It is considered the boundary between the two terranes (Zamoras et al 2008).…”

mentioning

confidence: 99%

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Terrane Boundary Geophysical Signatures in Northwest Panay, Philippines: Results from Gravity, Seismic Refraction and Electrical Resistivity Investigations

Gabo¹,

Dimalanta²,

Yumul³

et al. 2015

Terr. Atmos. Ocean. Sci.

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Northwest Panay consists of two terranes that form part of the Central Philippine collision zone: Buruanga Peninsula and Antique Range. The Buruanga Peninsula consists of a Jurassic chert-clastic-limestone sequence, typical of oceanic plate stratigraphy of the Palawan Micro-continental Block. The Antique Range is characterized by Antique Ophiolite Complex peridotites and Miocene volcanic and clastic rocks, representing obducted oceanic crust that serves as the oceanic leading edge of the collision with the Philippine Mobile Belt. The Nabas Fault is identified as the boundary between the two terranes. This study employed the gravity method to characterize the Northwest Panay subsurface structure. Results indicate higher Bouguer anomaly values for Buruanga Peninsula than those for Antique Range, separated by a sudden decrease in gravity values toward the east-southeast (ESE) direction. Forward gravity data modeling indicates the presence of an underlying basaltic subducted slab in the Buruanga Peninsula. Furthermore, the Nabas Fault is characterized as an east-dipping thrust structure formed by Buruanga Peninsula basement leading edge subduction beneath Antique Range. Additional geophysical constraints were provided by shallow seismic refraction and electrical resistivity surveys. Results from both methods delineated the shallow subsurface signature of the Nabas Fault buried beneath alluvium deposits. The gravity, seismic refraction and electrical resistivity methods were consistent in identifying the Nabas Fault as the terrane boundary between the Buruanga Peninsula and the Antique Range. The three geophysical methods helped constrain the subsurface configuration in Northwest Panay.

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Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

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Terrane Boundary Geophysical Signatures in Northwest Panay, Philippines: Results from Gravity, Seismic Refraction and Electrical Resistivity Investigations

Gabo¹,

Dimalanta²,

Yumul³

et al. 2015

Terr. Atmos. Ocean. Sci.

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“…Bhatia (1983) and Roser and Korsch (1986) proposed tectonic setting discrimination fields for sedimentary rocks to identify the tectonic setting of unknown basins. These tectonic setting discrimination diagrams are still extensively used by many researchers to infer the tectonic setting of ancient basins (Drobe et al, 2009;Gabo et al, 2009;Maslov et al, 2010;Wani andMondal, 2010 Bakkiaraji et al, 2010;Bhushan and Sahoo, 2010;de Araújo et al, 2010). However, the functioning of major elements tectonic setting discrimination diagrams proposed by Bhatia (1983) and Roser and Korsch (1986) have been evaluated in many studies.…”

Section: Implications For Tectonic Settingmentioning

confidence: 99%

A Combined Petrological-Geochemical Study of the Paleozoic Successions of Iraq

Al-Juboury¹

2012

Petrology - New Perspectives and Applications

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“…In northwest Panay, Philippines, geochemical signatures of the Buruanga Peninsula clastic rocks suggest a silicic provenance in contrast with the Antique Range mafic provenance that is just adjacent to it. Such information helped delineate the extent of the continental fragment in this part of the Philippines (e.g., Gabo et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Petrography, geochemistry, and tectonics of a rifted fragment of Mainland Asia: evidence from the Lasala Formation, Mindoro Island, Philippines

Concepción

Dimalanta

Yumul

et al. 2011

Int J Earth Sci (Geol Rundsch)

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Petrological and geochemical investigations of the sedimentary Lasala formation in northwest Mindoro, Philippines, offer new insights into the origin of this geologically contentious region. Mindoro island's position at the boundary between Sundaland and the Philippine Mobile Belt has led to variable suggestions as to how much of it is continent derived or not. The Eocene Lasala formation overlies the Jurassic Halcon metamorphics, a regionally metamorphosed suite generally thought to have formed as a result of arc-continent collision processes. The sedimentary formation consists mainly of sandstones and shales interbedded with mudstones, basalt flows, and subordinate limestones and conglomerates. Petrographic information on the Lasala clastic rocks demonstrates a uniform framework composition that is predominantly quartzose. Major oxide, trace element abundances, and various elemental ratios similarly impart a strongly felsic signature. These characteristics are taken to indicate a chiefly continental, passive margin derivation and deposition of the Lasala sediments during the Eocene. The weak indication of active margin influence is suggested to be an inherited signature, supported by paleogeographic models of the southeastern Asian margin area during the preCenozoic.

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Geology and geochemistry of the clastic sequences from Northwestern Panay (Philippines): Implications for provenance and geotectonic setting

Cited by 60 publications

References 43 publications

Terrane Boundary Geophysical Signatures in Northwest Panay, Philippines: Results from Gravity, Seismic Refraction and Electrical Resistivity Investigations

Terrane Boundary Geophysical Signatures in Northwest Panay, Philippines: Results from Gravity, Seismic Refraction and Electrical Resistivity Investigations

A Combined Petrological-Geochemical Study of the Paleozoic Successions of Iraq

Petrography, geochemistry, and tectonics of a rifted fragment of Mainland Asia: evidence from the Lasala Formation, Mindoro Island, Philippines

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