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  5. <title>UTas ePrints - New constraints on the seismic structure of West Australia: Evidence for terrane stabilization prior to the assembly of an ancient continent?</title>
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  13. <meta content="Reading, A.M." name="eprints.creators_name" />
  14. <meta content="Kennett, B.L.N." name="eprints.creators_name" />
  15. <meta content="Goleby, B." name="eprints.creators_name" />
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  23. <meta content="New constraints on the seismic structure of West Australia: Evidence for terrane stabilization prior to the assembly of an ancient continent?" name="eprints.title" />
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  27. <meta content="Archean, craton, Australia, seismic structure, receiver function, tectonics, lithosphere" name="eprints.keywords" />
  28. <meta content="We present a new, near-comprehensive survey of the variations in seismic structure across the West Australian craton at the scale of the main terrane groups. Analyzing data from distant earthquakes recorded at temporary and permanent stations located across the region, we
  29. found the best-fi tting structure by modeling the conversions from P- to S-wave motion (the receiver function) that take place as the seismic energy travels upward through the lithosphere.
  30. Such methods can be used to delineate the extent of cratonic and orogenic terranes in regions where geological exposure of the surface is limited, and they provide an effective alternative to active-source seismic techniques for deep crustal targets. The seismic structure is consistent within several of the individual Archean terranes, most notably the Pilbara, Murchison, and
  31. Southern Cross. These terranes are underlain by lower crust of low seismic velocity and show a sharp seismic Moho. The structure shows signifi cant contrasts between neighboring terranes; thus, major tectonic units have a velocity profi le that is a signature of that terrane or terrane group. We infer that the seismic structure of the Archean crust and upper mantle was fixed before craton assembly and preserved through the subsequent collision and accretion of
  32. the tectonic units that formed the West Australian craton." name="eprints.abstract" />
  33. <meta content="2007-04" name="eprints.date" />
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  35. <meta content="Geology" name="eprints.publication" />
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  44. <meta content="Barley, M.E., 1998, The tectonic and metallogenic
  45. evolution of the Pilbara craton: Preface: Precambrian
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  48. Evolution of the Australian lithosphere: Australian
  49. Journal of Earth Sciences, v. 49, p. 661-695,
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  51. Bleeker, W., 2003, The Late Archean record: A
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  171. profi le: Precambrian Research, v. 78, p. 179-196, doi:10.1016/0301-9268(95)00077-1." name="eprints.referencetext" />
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  178. <meta content="Goleby, B." name="DC.creator" />
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  180. <meta content="We present a new, near-comprehensive survey of the variations in seismic structure across the West Australian craton at the scale of the main terrane groups. Analyzing data from distant earthquakes recorded at temporary and permanent stations located across the region, we
  181. found the best-fi tting structure by modeling the conversions from P- to S-wave motion (the receiver function) that take place as the seismic energy travels upward through the lithosphere.
  182. Such methods can be used to delineate the extent of cratonic and orogenic terranes in regions where geological exposure of the surface is limited, and they provide an effective alternative to active-source seismic techniques for deep crustal targets. The seismic structure is consistent within several of the individual Archean terranes, most notably the Pilbara, Murchison, and
  183. Southern Cross. These terranes are underlain by lower crust of low seismic velocity and show a sharp seismic Moho. The structure shows signifi cant contrasts between neighboring terranes; thus, major tectonic units have a velocity profi le that is a signature of that terrane or terrane group. We infer that the seismic structure of the Archean crust and upper mantle was fixed before craton assembly and preserved through the subsequent collision and accretion of
  184. the tectonic units that formed the West Australian craton." name="DC.description" />
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  296. <h1 class="ep_tm_pagetitle">New constraints on the seismic structure of West Australia: Evidence for terrane stabilization prior to the assembly of an ancient continent?</h1>
  297. <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Reading, A.M.</span> and <span class="person_name">Kennett, B.L.N.</span> and <span class="person_name">Goleby, B.</span> (2007) <xhtml:em>New constraints on the seismic structure of West Australia: Evidence for terrane stabilization prior to the assembly of an ancient continent?</xhtml:em> Geology, 35 (4). pp. 379-382. ISSN 0091-7613</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/1743/1/Reading_2007_Geology.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/1743/1/Reading_2007_Geology.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />386Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2236" 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/10.1130/G23341A.1">http://dx.doi.org/10.1130/G23341A.1</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">We present a new, near-comprehensive survey of the variations in seismic structure across the West Australian craton at the scale of the main terrane groups. Analyzing data from distant earthquakes recorded at temporary and permanent stations located across the region, we&#13;
  298. found the best-fi tting structure by modeling the conversions from P- to S-wave motion (the receiver function) that take place as the seismic energy travels upward through the lithosphere.&#13;
  299. Such methods can be used to delineate the extent of cratonic and orogenic terranes in regions where geological exposure of the surface is limited, and they provide an effective alternative to active-source seismic techniques for deep crustal targets. The seismic structure is consistent within several of the individual Archean terranes, most notably the Pilbara, Murchison, and&#13;
  300. Southern Cross. These terranes are underlain by lower crust of low seismic velocity and show a sharp seismic Moho. The structure shows signifi cant contrasts between neighboring terranes; thus, major tectonic units have a velocity profi le that is a signature of that terrane or terrane group. We infer that the seismic structure of the Archean crust and upper mantle was fixed before craton assembly and preserved through the subsequent collision and accretion of&#13;
  301. the tectonic units that formed the West Australian craton.</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">Archean, craton, Australia, seismic structure, receiver function, tectonics, lithosphere</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/260100.html">260000 Earth Sciences &gt; 260100 Geology</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">1743</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">04 Sep 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">30 Jan 2008 15:29</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=1743;">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&amp;eprintid=1743">item control page</a></p>
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