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Benambran Orogeny

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Series: GSA Special Papers
Published: 01 January 1975
DOI: 10.1130/SPE150-p1
..., most of the Tasman Mobile Belt in southeastern Australia underwent a major diastrophic revolution, the Benambran Orogeny. Three phases are discernible stratigraphically: the first in early Llandovery time, the second in middle or early late Llandovery, and the third during the Wenlock, probably...
Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2020
DOI: 10.5382/SP.23.30
EISBN: 9781629496429
...). The ore deposits are hosted by volcaniclastic rocks of the Weemalla Formation and Forest Reefs Volcanics, which were deposited in a submarine basin on the flanks of the Macquarie Arc during the Middle to Late Ordovician. Alkalic magmatism occurred during the Benambran orogeny in the Late Ordovician...
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Journal Article
Journal: Economic Geology
Published: 01 August 2010
Economic Geology (2010) 105 (5): 895–915.
... of the Bendigo zone lay outside the influence of Cambrian subduction-accretion and were deformed later, probably beginning in the Late Ordovician-Early Silurian Benambran orogeny during crustal-scale imbrication. This imbrication preserved much of the mafic rocks to form the lower to middle crust. First-order...
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Journal Article
Journal: Economic Geology
Published: 01 June 2021
Economic Geology (2021) 116 (4): 909–935.
...-parallel veins that developed high-grade gold shoots. Deformation and gold mineralization in the western Lachlan orogen started in the Late Ordovician to middle Silurian Benambran orogeny and continued with more deposits forming in the Bindian (Early Devonian) and Tabberabberan (late Early-Middle Devonian...
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Journal Article
Published: 20 February 2020
Environmental & Engineering Geoscience (2020) 26 (1): 73–77.
... deformation event termed the Benambran Orogeny. This caused extensive shortening across the region, folding and faulting the rocks, and was accompanied by granite intrusion and regional metamorphism to actinolite-biotite grade (greenschist facies). Ultramafic and mafic volcanic and intrusive rocks were...
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Journal Article
Journal: Geology
Published: 01 September 2015
Geology (2015) 43 (9): 811–814.
... in the Ordovician ( Scheibner, 1973 ; Glen et al., 2007 ; Crawford et al., 2007 ). The arc records periods of episodic volcanism and magmatism punctuated by volcanic hiatuses, uplift, and erosion prior to collision of the arc with Gondwana in the early Silurian Benambran orogeny ( Glen et al., 2007...
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Journal Article
Journal: Economic Geology
Published: 26 October 2020
Economic Geology (2020) 115 (8): 1645–1664.
... in the Bendigo zone and occurred during stages of crustal shortening and heating related to the Benambran orogeny (D 2 ). Regional-scale metamorphism and deformation produced hydrothermal ore-bearing fluids from a large crustal reservoir and concentrated them within host structures ( VandenBerg, 2000 ; Bierlein...
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Journal Article
Journal: SEG Discovery
Published: 01 April 1995
SEG Discovery (1995) (21): 1–12.
... and slate) sequences separated by “greenstone” belts. These clastic and volcanic rocks were metamorphosed to greenschist facies rocks and were strongly deformed by the Early to Middle Silurian Benambran Orogeny in the Tabberabbera zone, and by the Middle Devonian Tabberabberan Orogeny in the Melbourne...
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Journal Article
Published: 01 May 2018
European Journal of Mineralogy (2018) 30 (3): 635–645.
... and migmatite) of the Omeo Metamorphic Complex, causing localised contact metamorphism ( Crohn, 1950 ; Morand et al. , 2004 ) following the Benambran Orogeny. The pegmatites are internally unzoned and consist mainly of quartz, K-rich feldspar, albite and muscovite. Sporadic greisen-like zones consisting...
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Series: Geological Society, London, Special Publications
Published: 01 January 2005
DOI: 10.1144/GSL.SP.2005.246.01.02
EISBN: 9781862394940
... with the Delamerian Orogen, as well as Cambrian rocks on the south coast of New South Wales. Deformation events occur around the Ordovician-Silurian boundary (Benambran Orogeny), locally around the Silurian-Devonian boundary (Bindi deformation), late Early to Middle Devonian (Tabberabberan Orogeny) and Early...
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Journal Article
Journal: Economic Geology
Published: 01 December 2021
Economic Geology (2021) 116 (8): 1849–1864.
... figures, and additional analyses of the processed orientation data were undertaken in MTEX. The Ordovician rocks of the Bendigo zone are host for the Bendigo and Fosterville gold deposits, associated with east-west shortening in the Benambran orogeny (445–435 Ma; VandenBerg, 2000 ). Strike-slip...
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Journal Article
Journal: Geology
Published: 01 May 2006
Geology (2006) 34 (5): 397–400.
... zircon U-Pb ages and 40 Ar/ 39 Ar geochronology of the Early Palaeozoic Girilambone Group, central New South Wales: Subduction, contraction and extension associated with the Benambran Orogeny : Australian Journal of Earth Sciences , v. 52 p. 137 – 159 doi: 10.1080/08120090500100044. Groves...
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Journal Article
Published: 01 June 2013
Russ. Geol. Geophys. (2013) 54 (6): 606–612.
... in Australia, northern Scotland, and CAMB ( Barnes et al., 2002 ; Khain, 2001 ; Serykh, 1982 ). The next stage of orogeny (Benambran compression) and attendant granite formation spanned the Ordovician and Silurian (the Tasmanian belt of Australia, Southern Andes) ( Maas et al., 2001 ). Also, large-scale...
Journal Article
Published: 30 November 2017
The Canadian Mineralogist (2017) 55 (6): 973–999.
...-Ballarat Terrane is complex and multi-staged. However, most orogenic-Au mineralization is associated with deformational events relating to the Benambran Orogeny (at approximately 455–440 Ma; VandenBerg et al . 2000 ). Onset of the Benambran Orogeny coincided with regional metamorphism of the Bendigo...
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Journal Article
Journal: Economic Geology
Published: 01 June 2014
Economic Geology (2014) 109 (4): 1035–1050.
... structural histories of overprinting deformation and vein-forming events. The Ordovician-Silurian porphyry deposits formed during episodic magmatism that occurred during extension or relaxation associated with accretion of the arc onto the Australian continent as part of the Benambran orogeny ( Glen et al...
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Journal Article
Published: 01 July 2009
Journal of Paleontology (2009) 83 (4): 548–561.
... Formation was followed by resumption of volcanic activity in the arc and a rapid accumulation of both tuffs and flows (Angullong Formation; formerly named “Tuff”). The Benambran Orogeny occurred following the deposition of the Angullong Formation during the Ordovician-Silurian boundary interval, causing...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2005
GSA Bulletin (2005) 117 (1-2): 105–116.
... doi: 10.1130/0091-7613(1998)0262.3.CO;2. Reed , A.R. , 2001 , Pre-Tabberabberan deformation in eastern Tasmania: A southern extension of the Benambran Orogeny : Australian Journal of Earth Sciences , 48 . 785 – 796 doi: 10.1046/J.1440-0952.2001.00900.X. Reed , A.R. , Calver...
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Journal Article
Published: 01 September 2021
South African Journal of Geology (2021) 124 (3): 565–574.
... ) and was emplaced following the Late-Silurian Benambran Orogeny, which did not affect the adjacent Melbourne Zone. Also, despite having been emplaced before the Middle Devonian Tabberabberan Orogeny, the Wilsons Promontory batholith, like all the other plutons in Figure 3 , shows no sign of any regional tectonic...
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Journal Article
Journal: Economic Geology
Published: 01 September 2023
Economic Geology (2023) 118 (6): 1291–1318.
..., which experienced an episode of arc reversal at 455 to 450 Ma ( Meffre et al., 2007 ) and two peaks of compressive deformation during the Benambran orogeny (~443 and ~430 Ma; Glen et al., 2007b ; Harris et al., 2020 ). The same thermal event may also have affected the Rb-Sr isotope system recorded...
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Journal Article
Published: 23 August 2022
Journal of the Geological Society (2022) 179 (6): jgs2021-169.
... with the Benambran Orogeny . Australian Journal of Earth Sciences , 52 , 137 – 115 , https://doi.org/10.1080/08120090500100044 Fergusson , C.L. , Nutman , A.P. , Kamiichi , T. and Hidaka , H. 2013 . Evolution of a Cambrian active continental margin: the Delamerian–Lachlan connection...
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