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The stratigraphy, structure and tectonics of the Kukukuku Lobe : Permit 22, Papua


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Kugler, A (1969) The stratigraphy, structure and tectonics of the Kukukuku Lobe : Permit 22, Papua. PhD thesis, University of Tasmania.

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The Kukukuku Lobe is a complex uplift of Miocene sediments. This
uplift basically represents the inversion of a deep, marine trough -
the Aure Trough - in which volcanic sandstones, mudstones and conglomerates
- the Aure Group - accumulated to a thickness at least of the
order of 10,000 meters during the Lower Miocene and early Middle Miocene.
The argillaceous Toa Group (late Middle Miocene-Upper Miocene; 3,000 m.)
overlies the Aure Group and is overlain in turn by the Era Group
(Pliocene; 2,200 m.). These units were deposited marginally to an
uplifted area of the Aure Group and were in large part derived from the
Aure Group.
The tectonic history of the Kukukuku Lobe is traced by means of
detailed stratigraphic and structural analyses, which reveal a sequential
pattern of westward migrating depositional troughs (subsidence), followed
a phase behind by westward migrating uplift and folding. The uplift and
folding are oldest along the eastern side of the Kukukuku Lobe (Lower
Miocene) and youngest along the western side (post-Pliocene), indicating
a long-lived and essentially continuous deformational history.
The Kukukuku Lobe forms the eastern leg of the Purari Orocline, and the
tectonic development of the Lobe - from the earliest-formed sedimentary
trough to the latest deformation - records the manner and mechanisms by
which the Purari Orocline has formed. The Purari Orocline is placed in
a regional geological context by reviewing the gross tectonic framework
of New Guinea, and the stress system which gave rise to both the Purari
Orocline and the Kukukuku Lobe is identified. This stress system is
then related to the regional tectonic pattern of New Guinea and the
southwest Pacific.

Item Type: Thesis (PhD)
Keywords: Geology, Stratigraphic
Copyright Information:

Copyright 1967 the author - The University is continuing to endeavour to trace the copyright owner(s) and in the meantime this item has been reproduced here in good faith. We would be pleased to hear from the copyright owner(s).

Additional Information:

Bibliography: p. 357-365. Errata (5 p.) tipped in. Thesis (Ph.D.) - University of Tasmania, 1967

Date Deposited: 19 Dec 2014 02:26
Last Modified: 14 Mar 2017 23:31
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