Synorogenic alluvial-fan – fan-delta deposition in the Papuan foreland basin: Plio-Pleistocene Era Formation, Papua New Guinea

Winn, Robert D.; Pousai, P.

doi:10.1080/08120099.2010.492909

Cited by 3 publications

(1 citation statement)

References 26 publications

(46 reference statements)

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“…Figure b shows a schematic, east‐west cross section from the offshore Fly platform to the Papuan peninsula through three deformed zones, and was compiled from seismic reflection data from this study, wells, and previous onshore geology [ Kugler , ]. The onshore Aure‐Moresby fold‐thrust belt consists of tight to overturned, imbricately thrusted folds of almost entirely Neogene clastic rocks, and is actively accommodating convergent structural deformation [ Kugler , ; Winn and Pousai , ].…”

Section: Description Of the Onshore And Offshore Aure‐moresby Fold‐thmentioning

confidence: 99%

Late Miocene to Recent formation of the Aure‐Moresby fold‐thrust belt and foreland basin as a consequence of Woodlark microplate rotation, Papua New Guinea

Ott

Mann

2015

Geochem Geophys Geosyst

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The Aure-Moresby fold-thrust belt and Aure-Moresby foreland basin are located in the eastern Gulf of Papua (GOP), Papua New Guinea (PNG), and formed during late Miocene-Recent as the result of large-scale, counterclockwise rotation of the 355,000 km 2 Woodlark microplate. To document the structure, stratigraphy, and age of convergent deformation along the poorly studied, western edge of the rotating Woodlark microplate, we integrate results of 2,538 km of previously unpublished 2-D seismic reflection data with onshore geologic and GPS studies from previous workers. The late Miocene Aure-Moresby fold-thrust belt is a 400 km long, northwest-trending fold-belt exposed onshore in Papua New Guinea that plunges to the southeast, where continuous folds and northeast-dipping thrusts can be imaged in the subsurface for more than 250 km. The arcuate trend of the Aure-Moresby fold-thrust belt along the southwestern coast and offshore areas of the Papuan peninsula parallels the shape of the adjacent, offshore Aure-Moresby foreland basin and the strike of the transpressional segment of the leftlateral Owen-Stanley fault zone (OSFZ) passing along the center of the Papuan peninsula. As the OSFZ becomes more transtensional east of 1488E, folds of the Aure-Moresby fold-thrust belt along southern coast of the peninsula become less prominent, and the adjacent Aure-Moresby foreland basin transitions into an undeformed Cenozoic passive margin setting. These observations of convergent an left-lateral deformation along the Aure-Moresby fold-thrust belt are consistent with: (1) counterclockwise rotation of the Woodlark microplate known from regional GPS studies; (2) coeval opening of the Woodlark basin along its southern edge in the late Miocene; and (3) rapid subduction at the New Britain trench along its northern edge. The kinematics of the rotating Woodlark microplate are driven by slab pull forces acting on the actively subducting northern edge of the microplate.

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Section: Description Of the Onshore And Offshore Aure‐moresby Fold‐thmentioning

confidence: 99%

Late Miocene to Recent formation of the Aure‐Moresby fold‐thrust belt and foreland basin as a consequence of Woodlark microplate rotation, Papua New Guinea

Ott

Mann

2015

Geochem Geophys Geosyst

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Organic geochemical signatures of source rocks and oil-source correlation in the Papuan Basin, Papua New Guinea

Hou

Lin

et al. 2022

Journal of Petroleum Science and Engineering

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Coastal Boulder Deposits of the Neogene World: A Synopsis

Ruban

2019

JMSE

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Modern geoscience research pays significant attention to Quaternary coastal boulder deposits, although the evidence from the earlier geologic periods can be of great importance. The undertaken compilation of the literature permits to indicate 21 articles devoted to such deposits of Neogene age. These are chiefly case studies. Such an insufficiency of investigations may be linked to poor preservation potential of coastal boulder deposits and methodological difficulties. Equal attention has been paid by geoscientists to Miocene and Pliocene deposits. Taking into account the much shorter duration of the Pliocene, an overemphasis of boulders of this age becomes evident. Hypothetically, this can be explained by more favorable conditions for boulder formation, including a larger number of hurricanes due to the Pliocene warming. Geographically, the studies of the Neogene coastal boulder deposits have been undertaken in different parts of the world, but generally in those locations where rocky shores occur nowadays. The relevance of these deposits to storms and tsunamis, rocky shores and deltas, gravity processes, and volcanism has been discussed; however, some other mechanisms of boulder production, transportation, and accumulation (e.g., linked to seismicity and weathering) have been missed.

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Synorogenic alluvial-fan – fan-delta deposition in the Papuan foreland basin: Plio-Pleistocene Era Formation, Papua New Guinea

Cited by 3 publications

References 26 publications

Late Miocene to Recent formation of the Aure‐Moresby fold‐thrust belt and foreland basin as a consequence of Woodlark microplate rotation, Papua New Guinea

Late Miocene to Recent formation of the Aure‐Moresby fold‐thrust belt and foreland basin as a consequence of Woodlark microplate rotation, Papua New Guinea

Organic geochemical signatures of source rocks and oil-source correlation in the Papuan Basin, Papua New Guinea

Coastal Boulder Deposits of the Neogene World: A Synopsis

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