Basement controls on rifting and the associated formation of ocean transform faults—Cretaceous continental extension of the southern margin of Australia

Miller, John M.; Norvick, M. S.; Wilson, Christopher J.L.

doi:10.1016/s0040-1951(02)00508-5

Cited by 56 publications

(55 citation statements)

References 42 publications

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“…A strong relationship between volcanic alignments and the structures of the Western Otway Basin can be observed along the coast at area 1. Area 6 is located along the coast at the change from NW‐SE trending rifts (West Otways), E‐W structures and NE‐SW trending rifts (East Otways) [ Finlayson et al , 1996; Miller et al , 2002]. E‐W trending alignments are present, although the dominant vent trend is NW‐SE across the entire region.…”

Section: Discussionmentioning

confidence: 99%

“…Structural data, both field based and geophysical, illustrate that the Otway basin is not a simple passive margin but the site of a complex post‐rift tectonic history, characterized by intermittent extensional, compressional and transcurrent phases, during which preexisting discontinuities have been reactivated [ Foster and Gleadow , 1992; Norvick and Smith , 2001; Miller et al , 2002; Sandiford , 2003; Sandiford et al 2004]. In particular, the occurrence of inversion tectonics during Pliocene and Quaternary has been associated with a NW‐SE oriented regional compression [ Sandiford , 2003, Sandiford et al , 2004].…”

Section: Discussionmentioning

confidence: 99%

“…Geological map of western Victoria (structures from Miller et al [2002], Cas et al [1993], and Hill et al [1995]). …”

Section: Introductionmentioning

confidence: 99%

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Volcano tectonic setting of the intraplate, Pliocene‐Holocene, Newer Volcanic Province (southeast Australia): Role of crustal fracture zones

et al. 2008

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The Pliocene‐Holocene Newer Volcanic Province in Victoria, southeast Australia, is a wide volcanic field site of the most recent volcanic activity of Australia. The intraplate signature and the localization on the northern side of the Southern Ocean have been used in the past to ascribe the volcanic activity either to the presence of a mantle hot spot or to thermal anomalies inherited from the seafloor spreading that separated Australia from Antarctica during the Gondwana breakup. The spacing and distribution of groups of eruption points suggests the presence of a 32 km deep mantle thermal anomaly. Alignments of eruption points indicate a strong tectonic control on magma emplacement mainly along NW‐SE Mesozoic‐Cenozoic structures and along N‐S Palaeozoic and E‐W Late Cretaceous structures. This volcano tectonic setting relates to the interference of the left‐lateral kinematics of the major N‐S trending faults associated with the Tasman Fracture Zone and the extensional structures of the Otway basin. This interpretation is also coherent with stress in situ data and focal mechanisms of earthquakes (SHmax oriented N150°). This interpretation enhances the role of the Tasman Fracture Zone, a major sinistral transform, on the reactivation of transtensional structures, and on triggering the magmatism of the Newer Volcanic Province.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Volcano tectonic setting of the intraplate, Pliocene‐Holocene, Newer Volcanic Province (southeast Australia): Role of crustal fracture zones

et al. 2008

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“…The Ca-zeolite C chlorite mineralogy of these striations is consistent with temperatures around 100 C, and the variation in uplift history demonstrated by Kohn et al (2002) provides a good explanation for their distribution if the striations were formed between 130 Ma and 90 Ma. The most likely environment for the formation of the strike-slip faults in Tasmania is the period of northwestÀ southeast compression in the Cenomanian (100À95 Ma) that has been recognised in the Otway Basin (Miller et al 2002;Krassay et al 2004). This period is consistent with the absolute constraints (<180 Ma, >55 Ma) and with strike-slip striations found in the Cygnet Syenite.…”

Section: Discussionmentioning

confidence: 99%

“…Ultraslow northwestÀsoutheast spreading continued from 128 Ma until 83 Ma (Jacob & Dyment 2014). Regional northwestÀsoutheast shortening in the Cenomanian (ca 95 Ma; Miller et al 2002) resulted in folding of Lower Cretaceous sedimentary rocks in what is now the Otway Ranges ( Figure 1) and uplift over most of southeast Australia (e.g. Kohn et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Late Mesozoic strike-slip faulting in Tasmania

Berry

2015

Australian Journal of Earth Sciences

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Jurassic dolerite is well exposed in fresh cuttings and quarries throughout Tasmania, and fault striations were found in a high proportion of these exposures in the south and west of the state. These fault striation provide a record of late Mesozoic faulting dominated by dextral west-northwestÀeast-southeast-striking faults and sinistral northÀsouth-striking faults. This fault association indicates compression from the NNW. Indirect evidence suggests these structures formed during the Cenomanian (ca 95 Ma) inversion in the Otway and Bass basins, and are probably part of the crustal shortening that formed the Transantarctic Mountains.

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Tectonomagmatic evolution of the final stages of rifting along the deep conjugate Australian-Antarctic magma-poor rifted margins: Constraints from seismic observations

et al. 2015

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The processes related to hyperextension, exhumed mantle domains, lithospheric breakup, and formation of first unequivocal oceanic crust at magma-poor rifted margins are yet poorly understood. In this paper, we try to bring new constraints and new ideas about these latest deformation stages by studying the most distal Australian-Antarctic rifted margins. We propose a new interpretation, linking the sedimentary architectures to the nature and type of basement units, including hyperextended crust, exhumed mantle, embryonic, and steady state oceanic crusts. One major implication of our study is that terms like prerift, synrift, and postrift cannot be used in such polyphase settings, which also invalidates the concept of breakup unconformity. Integration and correlation of all available data, particular seismic and potential field data, allows us to propose a new model to explain the evolution of magma-poor distal rifted margins involving multiple and complex detachment systems. We propose that lithospheric breakup occurs after a phase of proto-oceanic crust formation, associated with a substantial magma supply. First steady state oceanic crust may therefore not have been emplaced before~53.3 Ma corresponding to magnetic anomaly C24. Observations of magma amount and its distribution along the margins highlight a close magma-fault relationship during the development of these margins.

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Basement controls on rifting and the associated formation of ocean transform faults—Cretaceous continental extension of the southern margin of Australia

Cited by 56 publications

References 42 publications

Volcano tectonic setting of the intraplate, Pliocene‐Holocene, Newer Volcanic Province (southeast Australia): Role of crustal fracture zones

Volcano tectonic setting of the intraplate, Pliocene‐Holocene, Newer Volcanic Province (southeast Australia): Role of crustal fracture zones

Late Mesozoic strike-slip faulting in Tasmania

Tectonomagmatic evolution of the final stages of rifting along the deep conjugate Australian-Antarctic magma-poor rifted margins: Constraints from seismic observations

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