Tectonic controls on carbonate platform evolution in southern Papua New Guinea: Passive margin to foreland basin

Journal Article · Wed Mar 01 00:00:00 EST 1989 · Geology; (USA)

DOI:https://doi.org/10.1130/0091-7613(1989)017<0199:TCOCPE>2.3.CO;2· OSTI ID:7160512

Feary, D A; Symonds, P A ^[1]

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1. Bureau of Mineral Resources, Canberra (Australia)

The middle Oligocene collision of the northern margin of the Australian craton with a complex subduction system resulted in emplacement of a thrust mass and formation of a foreland basin that extended from the Coral Sea to the Indian Ocean. The distribution of carbonate-platform facies in southwestern Papua New Guinea reflects the transition from an Eocene passive margin setting to the early stages of foreland basin evolution. The initial basin configuration, with terrigenous sedimentation confined to the proximal foredeep, allowed carbonate deposition in the shallow environment adjacent to the peripheral forebulge. Subsequent southward migration of the basin resulted in a rapid increase in the area and thickness of carbonate-platform deposition. When the proximal foredeep became filled by detritus shed from the emerging orogen, clastic sediments buried the platform and terminated carbonate deposition. The history of the southern Papua New Guinea carbonate platform illustrates the paradox of carbonate deposition within the foreland basin, whereby basin configuration initially encourages thick and extensive carbonate deposition but inevitably leads to terrigenous inundation and the demise of the carbonate platform.

• OSTI ID: 7160512
• Journal Information: Geology; (USA), Vol. 17:3; ISSN 0091-7613
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
58 GEOSCIENCES
GEOLOGIC DEPOSITS
TECTONICS
PAPUA NEW GUINEA
CARBONATE ROCKS
DEPOSITION
GEOLOGIC HISTORY
PLATE TECTONICS
SEDIMENTARY BASINS
SUBDUCTION ZONES
THICKNESS
ASIA
AUSTRALASIA
DIMENSIONS
GEOLOGIC STRUCTURES
ISLANDS
NEW GUINEA
ROCKS
SEDIMENTARY ROCKS
020200* - Petroleum- Reserves
Geology
&amp; Exploration
580000 - Geosciences