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<title>UTas ePrints - Facies architecture of the Early Devonian Ural Volcanics, New South Wales</title>
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<meta content="Bull, K.F." name="eprints.creators_name" />
<meta content="McPhie, J." name="eprints.creators_name" />
<meta content="katharine.bull@alaska.gov" name="eprints.creators_id" />
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<meta content="Facies architecture of the Early Devonian Ural Volcanics, New South Wales" name="eprints.title" />
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<meta content="Devonian, facies architecture, felsic volcanic rocks, Lachlan Orogen, pyroclastics, submarine volcanism, Ural Volcanics." name="eprints.keywords" />
<meta content="The Ural Volcanics are a early Devonian, submarine, felsic lava-sill complex, exposed in the western central Lachlan Orogen, New South Wales. The Ural Volcanics and underlying Upper Silurian, deepwater, basin-fill sedimentary rocks make up the Rast Group. The Ural Range study area, centrally
located in the Cargelligo 1:100 000 map sheet area, was mapped at 1:10 000 scale. Seventeen principal volcanic facies were identified in the study area, dominated by felsic coherent facies (rhyolite and dacite) and associated monomictic breccia and siltstone-matrix monomictic breccia facies.
Subordinate volcaniclastic facies include the pumice-rich breccia facies association, rhyolite - dacite -siltstone breccia facies and fiamme-siltstone breccia facies. The sedimentary facies association includes mixed-provenance and non-volcanic sandstone to conglomerate, black mudstone, micaceous quartz sandstone and foliated mudstone. The succession was derived from at least two intrabasinal volcanic centres. One, in the north, was largely effusive and intrusive, building a lava - sill complex. Another, in the south, was effusive, intrusive and explosive, generating lavas and moderate- volume (*3 km3) pyroclastic facies. The presence of turbidites, marine fossils, very thick massive to graded volcaniclastic units and black mudstone, and the lack of large-scale cross-beds and erosional scours, provide evidence for deposition in a submarine environment below storm wave-base. The Ural
Volcanics have potential for seafloor or sub-seafloor replacement massive sulfide deposits, although no
massive sulfide prospects or related altered zones have yet been defined. Sparse, disseminated sulfides occur in sericite-altered, steeply dipping shear zones." name="eprints.abstract" />
<meta content="2006-12" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Australian Journal of Earth Sciences" name="eprints.publication" />
<meta content="53" name="eprints.volume" />
<meta content="6" name="eprints.number" />
<meta content="919-945" name="eprints.pagerange" />
<meta content="10.1080/08120090600686835" name="eprints.id_number" />
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<meta content="ALLEN R. L., LUNDSTROM I., RIPA M., SIMEONOV A. & CHRISTOFFERSON H. 1996a. Facies analysis of a 1.9 Ga, continental margin, backarc, felsic caldera province with diverse Zn-Pb-Ag-(Cu -Au) sulfide and Fe oxide deposits, Bergslagen region, Sweden. Economic Geology 91, 979-1008.
ALLEN R. L., WEIHED P. & SVENSON S. A. 1996b. Setting of Zn-Cu-Au-Ag massive sulfide deposits in the evolution and facies architecture of a 1.9 Ga marine volcanic arc, Skellefte District, Sweden. Economic Geology 91, 1022-1053.
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WHITHAM A. & SPARKS R. 1986. Pumice. Bulletin of Volcanology 48, 209-223." name="eprints.referencetext" />
<meta content="Bull, K.F. and McPhie, J. (2006) Facies architecture of the Early Devonian Ural Volcanics, New South Wales. Australian Journal of Earth Sciences, 53 (6). pp. 919-945. ISSN 0812-0099" name="eprints.citation" />
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<meta content="The Ural Volcanics are a early Devonian, submarine, felsic lava-sill complex, exposed in the western central Lachlan Orogen, New South Wales. The Ural Volcanics and underlying Upper Silurian, deepwater, basin-fill sedimentary rocks make up the Rast Group. The Ural Range study area, centrally
located in the Cargelligo 1:100 000 map sheet area, was mapped at 1:10 000 scale. Seventeen principal volcanic facies were identified in the study area, dominated by felsic coherent facies (rhyolite and dacite) and associated monomictic breccia and siltstone-matrix monomictic breccia facies.
Subordinate volcaniclastic facies include the pumice-rich breccia facies association, rhyolite - dacite -siltstone breccia facies and fiamme-siltstone breccia facies. The sedimentary facies association includes mixed-provenance and non-volcanic sandstone to conglomerate, black mudstone, micaceous quartz sandstone and foliated mudstone. The succession was derived from at least two intrabasinal volcanic centres. One, in the north, was largely effusive and intrusive, building a lava - sill complex. Another, in the south, was effusive, intrusive and explosive, generating lavas and moderate- volume (*3 km3) pyroclastic facies. The presence of turbidites, marine fossils, very thick massive to graded volcaniclastic units and black mudstone, and the lack of large-scale cross-beds and erosional scours, provide evidence for deposition in a submarine environment below storm wave-base. The Ural
Volcanics have potential for seafloor or sub-seafloor replacement massive sulfide deposits, although no
massive sulfide prospects or related altered zones have yet been defined. Sparse, disseminated sulfides occur in sericite-altered, steeply dipping shear zones." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Facies architecture of the Early Devonian Ural Volcanics, New South Wales</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Bull, K.F.</span> and <span class="person_name">McPhie, J.</span> (2006) <xhtml:em>Facies architecture of the Early Devonian Ural Volcanics, New South Wales.</xhtml:em> Australian Journal of Earth Sciences, 53 (6). pp. 919-945. ISSN 0812-0099</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/1308/1/Bull%26McPhie2006.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1308/1/Bull%26McPhie2006.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />2426Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="1702" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1080/08120090600686835">http://dx.doi.org/10.1080/08120090600686835</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The Ural Volcanics are a early Devonian, submarine, felsic lava-sill complex, exposed in the western central Lachlan Orogen, New South Wales. The Ural Volcanics and underlying Upper Silurian, deepwater, basin-fill sedimentary rocks make up the Rast Group. The Ural Range study area, centrally
located in the Cargelligo 1:100 000 map sheet area, was mapped at 1:10 000 scale. Seventeen principal volcanic facies were identified in the study area, dominated by felsic coherent facies (rhyolite and dacite) and associated monomictic breccia and siltstone-matrix monomictic breccia facies.
Subordinate volcaniclastic facies include the pumice-rich breccia facies association, rhyolite - dacite -siltstone breccia facies and fiamme-siltstone breccia facies. The sedimentary facies association includes mixed-provenance and non-volcanic sandstone to conglomerate, black mudstone, micaceous quartz sandstone and foliated mudstone. The succession was derived from at least two intrabasinal volcanic centres. One, in the north, was largely effusive and intrusive, building a lava - sill complex. Another, in the south, was effusive, intrusive and explosive, generating lavas and moderate- volume (*3 km3) pyroclastic facies. The presence of turbidites, marine fossils, very thick massive to graded volcaniclastic units and black mudstone, and the lack of large-scale cross-beds and erosional scours, provide evidence for deposition in a submarine environment below storm wave-base. The Ural
Volcanics have potential for seafloor or sub-seafloor replacement massive sulfide deposits, although no
massive sulfide prospects or related altered zones have yet been defined. Sparse, disseminated sulfides occur in sericite-altered, steeply dipping shear zones.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Devonian, facies architecture, felsic volcanic rocks, Lachlan Orogen, pyroclastics, submarine volcanism, Ural Volcanics.</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/260103.html">260000 Earth Sciences > 260100 Geology > 260103 Vulcanology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/260100.html">260000 Earth Sciences > 260100 Geology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/260000.html">260000 Earth Sciences</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1308</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Mrs Katrina Keep</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">05 Jul 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">30 Jan 2008 15:09</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1308;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=1308">item control page</a></p>
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