Product catalogue
Geology of the Kubor Anticline, Central Highlands of Papua New Guinea
The Kubor Anticline began as a basement fold on the northeast margin of the Australian continental block in Palaeozoic time. It is bounded in the north by the New Guinea Mobile Belt (Bain, 1973; Dow et al 1973), a tectonically active zone within younger continental crust which accreted to the northern edge of the continent in Mesozoic time. Uplift of the northern edge of the older continental block resulted in gravity sliding, folding, and thrusting of the overlying Tertiary and uppermost Mesozoic rocks (Papuan Fold Belt), but the basement and the lower part of the cover rocks were only broadly folded and faulted (e.g. Kubor Anticline). Within the Mobile Belt the rocks are strongly deformed and intensely faulted. The oldest rocks exposed are low-grade greenschists formed by regional metamorphism of sedimentary and volcanic rocks of probable Palaeozoic age (Omung Metamorphics). They crop out only in the core of the Kubor Anticline, where they are intruded by acid to basic large plutons and small stocks (Kubor Granodiorite) of probable Late Permian age.In the west and northeast, the Kubor Granodiorite is conformably overlain by small patches of Upper Permian or Triassic limestone and arkose (Kuta Formation). Upper Triassic dacites and basalts (Kana Volcanics) are also unconformable on the metamorphic and plutonic rocks, but are not in contact with the Kuta Formation.The basement, Kuta Formation, and Kana Volcanics are overlain unconformably by the upper part of the Wahgi Group (about 7000 m of Upper Jurassic to Upper Cretaceous clastic and volcanic rocks), and the same sequence forms the limbs of the anticline.The southern and western limbs of the Kubor Anticline are overlain with paraconformity by upper Palaeocene? mudstone and sandstone (Pima Sandstone) and Eocene-Oligocene limestone (Nebilyer Limestone) respectively. At the east end of the northern limb, the Upper Cretaceous rocks are overlain with slight unconformity by about 300 m of Eocene-Oligocene foraminiferal limestone (Chimbu Limestone), which forms the base of the sequence in the Yaveufa Syncline. The Eocene-Oligocene limestones are everywhere overlain by Miocene limestone or elastics. The Nebilyer Limestone at the western closure of the Kubor Anticline is overlain by fine elastics with interbedded limestone, marl, and mudstone (Aure Beds) which grade southwards into massive shelf limestone (Darai Limestone).The northern limb of the Kubor Anticline is cut by the Bismarck Fault Zone along the southern margin of the New Guinea Mobile Belt. The Bismarck Fault Zone is 20 km wide and consists of a disturbed zone of subparallel anastomosing faults, thrusts, and tight overturned folds. There is at least 3000 m of vertical displacement (north side up) spread over the width of the fault zone in the vicinity of Mount Wilhelm. No economic mineral deposits are known in the Kubor area.
Simple
Identification info
- Date (Publication)
- 1975-01-01T00:00:00
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/98
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Bureau of Mineral Resources, Geology and Geophysics
Canberra Author Bain, J.H.C.
1 Author Mackenzie, D.E.
2 Author Ryburn, R.J.
3
- Name
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Bulletin
- Issue identification
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155
- ISBN
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0642000808
- Point of contact
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Role Organisation / Individual Name Details Custodian Corp
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
Spatial resolution
Equivalent scale
- Denominator
- 25000
- Topic category
-
- Geoscientific information
Extent
))
- Maintenance and update frequency
- Unknown
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Keywords
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GA Publication
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Bulletin
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- Theme
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geology
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- Keywords
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PG
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- Australian and New Zealand Standard Research Classification (ANZSRC)
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Earth Sciences
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Download the Bulletin (pdf)
Download the Bulletin (pdf)
- Distribution format
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pdf
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Resource lineage
- Statement
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Unknown
- Hierarchy level
- Non geographic dataset
- Other
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GA Publication
- Description
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Source data not available.
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/a05f7892-7fb6-7506-e044-00144fdd4fa6
- Title
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GeoNetwork UUID
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- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Document
- Name
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Legacy AGSO BMR Bulletins
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/98
- Date info (Revision)
- 2018-04-20T06:02:13
- Date info (Creation)
- 1996-10-29T00:00:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551