The seismic zone of the Papuan Fold Belt

Improved regional seismograph coverage in the 1970s has enhanced the resolution of the seismicity of the southern highlands of Papua New Guinea. Two zones can be defined. The Southern Highlands Seismic Zone follows the Papuan Fold Belt and extends from Kerema on the Gulf of Papua through the Star Mountains region into Irian Jaya. A second zone, the Mount Hagen Seismic Zone, plunges to the north-northeast from the Southern Highlands Seismic Zone south of Mount Hagen to intersect the intermediate-depth seismicity beneath the Ramu-Markham Valley. The southern highlands earthquakes reflect continuing Pliocene-Quaternary thrust faulting in the crust of the Indo-Australian Plate , brought about by the collision of the Indo-Australian and South Bismarck Plates over the sinking Solomon Sea Plate. Relief of compressive stress is through fracturing of the continental plate margin. The zone of fracture is now manifest in the Papuan Fold Belt. Seismic risk in the Southern Highlands Seismic Zone is less than that of the north coast, New Britain, and Bougainville, but is still high. The once-a-year largest earthquake is of magnitude 4.7, the ten-year earthquake magnitude 6.2, and the 30-year earthquake magnitude 6.9, which compare with the Californian figures of 5.7, 6.9, and 7.4, respectively. Large earthquakes are expected to occur along the zone in the future and their effects could be severe.

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Date (Publication)
1983-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81143

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Bureau of Mineral Resources, Geology and Geophysics

 Canberra
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Ripper, I.D.

 1
Author

McCue, K.F.

 2
Name

BMR Journal of Australian Geology and Geophysics

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8:2:147-156

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Commonwealth of Australia (Geoscience Australia)
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Commonwealth of Australia (Geoscience Australia)

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Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

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  • Journal

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  • PNG

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

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  • Published_External

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Creative Commons Attribution 4.0 International Licence

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4.0

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2018-11-01T00:00:00
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English
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Commonwealth of Australia (Geoscience Australia)

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Journal article (pdf)

Journal article (pdf)

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Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified

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urn:uuid/fae9173a-7054-71e4-e044-00144fdd4fa6

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Language
English
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UTF8
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Commonwealth of Australia (Geoscience Australia)

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Document
Name

AGSO BMR Journal

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Geoscience Australia - short identifier for metadata record with

uuid

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eCatId/81143

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fae9173a-7054-71e4-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:10:03
Date info (Creation)
2014-06-03T00:00:00

Metadata standard

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AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

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