Development of the Philippine Mobile Belt in northern Luzon from Eocene to Pliocene

Shigeyuki Suzuki, Rolando E. Peña, Tomas A. Tam, Graciano P. Yumul, Carla B. Dimalanta, Mayumi Usui, Keisuke Ishida

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The origin of the Philippine Archipelago is characterized by the combination of the oceanic Philippine Mobile Belt (PMB) and the Palawan Continental Block (PCB). This paper is focused on the geologic evolution of the PMB in northern Luzon from Eocene to Pliocene. The study areas (northern Luzon) are situated in the central part of the PMB which is occupied by its typical components made up of a pre-Paleocene ophiolitic complex, Eocene successions, Eocene to Oligocene igneous complex and late Oligocene to Pliocene successions. Facies analysis of the middle Eocene and late Oligocene to early Pliocene successions was carried out to understand the depositional environment of their basins. Modal sandstone compositions, which reflect the basement geology of the source area, were analyzed. Major element geochemistry of sediments was considered to reconstruct the tectonic settings. The following brief history of the PMB is deduced. During the middle Eocene, the PMB was covered by mafic volcanic rocks and was a primitive island arc. In late Eocene to late Oligocene time, the intermediate igneous complex was added to the mafic PMB crust. By late Oligocene to early Miocene time, the PMB had evolved into a volcanic island arc setting. Contributions from alkalic rocks are detected from the rock fragments in the sandstones and chemical composition of the Zigzag Formation. During the middle Miocene to Pliocene, the tectonic setting of the PMB remained as a mafic volcanic island arc.

Original languageEnglish
Pages (from-to)32-44
Number of pages13
JournalJournal of Asian Earth Sciences
Volume142
DOIs
Publication statusPublished - Jul 1 2017

Fingerprint

mobile belt
Pliocene
Eocene
Oligocene
island arc
volcanic island
tectonic setting
Miocene
sandstone
facies analysis
mafic rock
depositional environment
rock
Paleocene
archipelago
volcanic rock
geochemistry
chemical composition
geology
crust

Keywords

  • Eocene to Pliocene
  • Facies analysis
  • Geochemistry of sediments
  • Modal composition of sandstones
  • Philippine Mobile Belt

ASJC Scopus subject areas

  • Geology
  • Earth-Surface Processes

Cite this

Development of the Philippine Mobile Belt in northern Luzon from Eocene to Pliocene. / Suzuki, Shigeyuki; Peña, Rolando E.; Tam, Tomas A.; Yumul, Graciano P.; Dimalanta, Carla B.; Usui, Mayumi; Ishida, Keisuke.

In: Journal of Asian Earth Sciences, Vol. 142, 01.07.2017, p. 32-44.

Research output: Contribution to journalArticle

Suzuki, Shigeyuki ; Peña, Rolando E. ; Tam, Tomas A. ; Yumul, Graciano P. ; Dimalanta, Carla B. ; Usui, Mayumi ; Ishida, Keisuke. / Development of the Philippine Mobile Belt in northern Luzon from Eocene to Pliocene. In: Journal of Asian Earth Sciences. 2017 ; Vol. 142. pp. 32-44.
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