<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<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>
<script type="text/javascript" src="http://eprints.utas.edu.au/javascript/auto.js"><!-- padder --></script>
<style type="text/css" media="screen">@import url(http://eprints.utas.edu.au/style/auto.css);</style>
<style type="text/css" media="print">@import url(http://eprints.utas.edu.au/style/print.css);</style>
<link rel="icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
<link rel="Top" href="http://eprints.utas.edu.au/" />
<link rel="Search" href="http://eprints.utas.edu.au/cgi/search" />
<meta content="Reading, A.M." name="eprints.creators_name" />
<meta content="Kennett, B.L.N." name="eprints.creators_name" />
<meta content="Goleby, B." name="eprints.creators_name" />
<meta content="Anya.Reading@utas.edu.au" name="eprints.creators_id" />
<meta name="eprints.creators_id" />
<meta name="eprints.creators_id" />
<meta content="article" name="eprints.type" />
<meta content="2007-09-04" name="eprints.datestamp" />
<meta content="2008-01-30T04:29:00Z" name="eprints.lastmod" />
<meta content="show" name="eprints.metadata_visibility" />
<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" />
<meta content="pub" name="eprints.ispublished" />
<meta content="260100" name="eprints.subjects" />
<meta content="restricted" name="eprints.full_text_status" />
<meta content="Archean, craton, Australia, seismic structure, receiver function, tectonics, lithosphere" name="eprints.keywords" />
<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
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.
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
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
the tectonic units that formed the West Australian craton." name="eprints.abstract" />
<meta content="2007-04" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Geology" name="eprints.publication" />
<meta content="35" name="eprints.volume" />
<meta content="4" name="eprints.number" />
<meta content="379-382" name="eprints.pagerange" />
<meta content="10.1130/G23341A.1" name="eprints.id_number" />
<meta content="UNSPECIFIED" name="eprints.thesis_type" />
<meta content="TRUE" name="eprints.refereed" />
<meta content="0091-7613" name="eprints.issn" />
<meta content="http://dx.doi.org/10.1130/G23341A.1" name="eprints.official_url" />
<meta content="Barley, M.E., 1998, The tectonic and metallogenic
evolution of the Pilbara craton: Preface: Precambrian
Research, v. 88, p. 1-2, doi: 10.1016/S0301-9268(97)00060-0.
Betts, P.G., Giles, D., Lister, G.S., and Frick, L.R., 2002,
Evolution of the Australian lithosphere: Australian
Journal of Earth Sciences, v. 49, p. 661-695,
doi: 10.1046/j.1440-0952.2002.00948.x.
Bleeker, W., 2003, The Late Archean record: A
puzzle in ca. 35 pieces: Lithos, v. 71, p. 99-134, doi: 10.1016/j.lithos.2003.07.003.
Blewett, R.S., 2002, Archaean tectonic processes: A
case for horizontal shortening in the North Pilbara
granite-greenstone terrane, Western Australia:
Precambrian Research, v. 113, p. 87-120, doi: 10.1016/S0301-9268(01)00204-2.
Cassidy, K.F., Champion, D.C., Krapez, B., Barley,
M.E., Brown, S.J.A., Blewett, R.S., Groenewald,
P.B., and Tyler, I.M., 2006, A revised geological framework for the Yilgarn craton, Western Australia: Western Australia Geological Survey Record 2006/8, 8 p.
Cawood, P.A., and Tyler, I.M., 2004, Assembling and
reactivating the Proterozoic Capricorn orogen:
Lithotectonic elements, orogenies, and significance: Precambrian Research, v. 128, p. 201-218, doi:10.1016/j.precamres.2003.09.001.
Chen, S.F., Libby, J.W., Greenfi eld, J.E., Wyche,
S., and Riganti, A., 2001, Geometry and kinematics
of large arcuate structures formed by impingement of rigid granitoids into greenstone belts during progressive shortening: Geology, v. 29, p. 283-286, doi: 10.1130/0091-
7613(2001)029<0283:GAKOLA>2.0.CO;2.
Clitheroe, G., Gudmundsson, O., and Kennett, B.L.N.,
2000, The crustal thickness of Australia: Journal
of Geophysical Research, v. 105, p. 13,697-13,713, doi: 10.1029/1999JB900317.
Collins, C.D.N., Drummond, B.J., and Nicholl, M.G.,
2003, Crustal thickness patterns in the Australian
continent, in Hillis, R.R., and Muller, R.D.,
eds., Evolution and Dynamics of the Australian
Plate: Geological Society of Australia Special
Publication 22 and Geological Society of America Special Publication 372, p. 121-128.
Condie, K., and Chomiak, B., 1996, Continental
accretion: Contrasting Mesozoic and Early
Proterozoic tectonic regimes in North America:
Tectonophysics, v. 265, p. 101-126, doi:10.1016/S0040-1951(96)00148-5.
Darbyshire, F.A., 2003, Crustal structure across the
Canadian High Arctic region from teleseismic
receiver function analysis: Geophysical Journal
International, v. 152, p. 372-391, doi: 10.1046/j.1365-246X.2003.01840.x.
Dentith, M.C., Dent, V.F., and Drummond, B.J.,2000, Deep crustal structure in the southwestern Yilgarn craton, Western Australia: Tectonophysics, v. 325, p. 227-255, doi: 10.1016/S0040-1951(00)00119-0.
Drummond, B.J., 1988, A review of crust/upper mantle
structure in the Precambrian areas of Australia
and implications for Precambrian crustal evolution: Precambrian Research, v. 40, p. 101-116, doi: 10.1016/0301-9268(88)90063-0.
Drummond, B.J., Goleby, B.R., and Swager, C.P.,
2000, Crustal signature of Late Archaean tectonic
episodes in the Yilgarn craton, Western Australia: Evidence from deep seismic sounding: Tectonophysics, v. 329, p. 193-221, doi:10.1016/S0040-1951(00)00196-7.
Durrheim, R.J., and Mooney, W.D., 1994, Evolution
of Precambrian lithosphere: Seismological and
geochemical constraints: Journal of Geophysical
Research, v. 99, p. 15,359-15,374, doi:10.1029/94JB00138.
Fishwick, S., Kennett, B.L.N., and Reading, A.M.,
2005, Contrasts in lithospheric structure within
the Australian craton-Insights from surface wave tomography: Earth and Planetary Science Letters, v. 231, p. 163-176, doi: 10.1016/j.epsl.2005.01.009.
Fitzsimons, I.C.W., 2003, Proterozoic basement provinces
of southern and southwestern Australia,and their correlation with Antarctica, in Yoshida, M., Windley, B.F., and Dasgupta, S., eds., Proterozoic East Gondwana: Supercontinent Assembly and Breakup: Geological Society of
London Special Publication 206, p. 93-130.
Goleby, B.R., Korsch, R.J., Fomin, T., Bell, B.,
Nicholl, M.G., Drummond, B.J., and Owen, A.J., 2002, Preliminary 3-D geological model of the Kalgoorlie region, Yilgarn craton, Western Australia, based on deep seismic-refl ection and potential-fi eld data: Australian Journal
of Earth Sciences, v. 49, p. 917-933, doi:10.1046/j.1440-0952.2002.00967.x.
Griffi n, W.L., Belousova, E.A., Shee, S.R., Pearson,
N.J., and OReilly, S.Y., 2004, Archean crustal
evolution in the northern Yilgarn craton: U-Pb
and Hf-isotope evidence from detrital zircons:
Precambrian Research, v. 131, p. 231-282, doi:10.1016/j.precamres.2003.12.011.
Hickman, A.H., 2004, Two contrasting granitegreenstone
terranes in the Pilbara craton, Australia: Evidence for vertical and horizontal tectonic regimes prior to 2900 Ma: Precambrian Research, v. 131, p. 153-172, doi: 10.1016/
j.precamres.2003.12.009.
Krapez, B., Brown, S.J.A., Hand, J., Barley, M.E.,
and Cas, R.A.F., 2000, Age constraints of recycled crustal and supracrustal sources of Archaean metasedimentary sequences, Eastern Goldfields Province, Western Australia:
Evidence from SHRIMP zircon dating: Tectonophysics,
v. 322, p. 89-133, doi: 10.1016/S0040-1951(00)00059-7.
Mueller, W.U., Daigneault, R., Mortensen, J.K., and
Chown, E.H., 1996, Archaean terrane docking:
Upper crust collision tectonics, Abitibi greenstone
belt, Quebec, Canada: Tectonophysics, v. 265, p. 127-150, doi: 10.1016/S0040-1951(96)00149-7.
Myers, J.S., 1997, Preface: Archaean geology of
the Eastern Goldfi elds of Western Australia Regional overview: Precambrian Research, v. 83, p. 1-10, doi:10.1016/S0301-9268(97)00002-8.
Myers, J.S., and Hocking, R.M., 1998, Geological Map of Western Australia (13th edition): Perth,
Australia, Geological Survey of Western Australia,
scale 1:2,500,000.
Nelson, D.R., 1998, Granite-greenstone crust formation
on the Archaean Earth: A consequence of two superimposed processes: Earth and Planetary Science Letters, v. 158, p. 109-119, doi:10.1016/S0012-821X(98)00049-1.
Niu, F., and James, D.E., 2002, Fine structure of the
lowermost crust beneath the Kaapvaal craton and its implications for crustal formation and evolution: Earth and Planetary Science Letters, v. 200, p. 121-130, doi:10.1016/S0012-821X(02)00584-8.
OReilly, S.Y., Griffi n, W.L., Poudjom Djomani,
Y.H., and Morgan, P., 2001, Are lithospheres
forever? Tracking changes in subcontinental
lithospheric mantle through time: GSA Today,
v. 11, no. 4, p. 4-10.
Reading, A.M., and Kennett, B.L.N., 2003, Lithospheric
structure of the Pilbara craton, Capricorn
orogen and northern Yilgarn craton, Western Australia, from teleseismic receiver functions: Australian Journal of Earth Sciences, v. 50, p. 439-445, doi: 10.1046/j.1440-0952.2003.01003.x.
Reading, A.M., Kennett, B.L.N., and Dentith, M.C.,
2003a, Seismic structure of the Yilgarn craton,
Western Australia: Australian Journal of Earth
Sciences, v. 50, p. 427-438, doi: 10.1046/j.1440-0952.2003.01000.x.
Reading, A.M., Kennett, B.L.N., and Sambridge,
M.S., 2003b, Improved inversion for seismic
structure using transformed, S-wavevector
receiver functions: Removing the effect of the
free surface: Geophysical Research Letters,
v. 30, doi: 10.1029/2003GL018090.
Reddy, S.M., and Occhipinti, S.A., 2004, High-strain
zone deformation in the southern Capricorn orogen,
Western Australia: Kinematics and age constraints:
Precambrian Research, v. 128, p. 295-314, doi:10.1016/j.precamres.2003.09.005.
Rudnick, R.L., and Fountain, D.M., 1995, Nature and
composition of the continental crust: A lower
crustal perspective: Reviews in Geophysics,
v. 33, p. 267-309, doi: 10.1029/95RG01302.
Sambridge, M.S., 1999, Geophysical inversion with
a neighbourhood algorithm. I. Searching a parameter space: Geophysical Journal International, v. 138, p. 479-494, doi:10.1046/j.1365-246X.1999.00876.x.
Shibutani, T., Sambridge, M., and Kennett, B., 1996,
Genetic algorithm inversion for receiver functions
with application to crust and uppermost mantle structure beneath Eastern Antarctica: Geophysical Research Letters, v. 23, p. 1829-1832, doi: 10.1029/96GL01671.
Viejo, G.F., and Clowes, R.M., 2003, Lithospheric
structure beneath the Archaean Slave Province
and Proterozoic Wopmay orogen, northwestern
Canada, from a LITHOPROBE refraction/ wide-angle refl ection survey: Geophysical Journal International, v. 153, p. 1-19, doi:10.1046/j.1365-246X.2003.01807.x.
Whitaker, A.J., 2001, Components and structure of
the Yilgarn craton, as interpreted from aeromagnetic
data, in Cassidy, K.F., Dunphy, J.M.,and VanKranendonk , M.J., eds., 4th International Archaean Symposium, 24-28 September 2001, Perth, Western Australia [extended abs.]:
AGSO Record, v. 37, p. 536-538.
Wilde, S.A., Middleton, M.F., and Evans, B.J., 1996,
Terrane accretion in the southwestern Yilgarn
craton: Evidence from a deep seismic crustal
profi le: Precambrian Research, v. 78, p. 179-196, doi:10.1016/0301-9268(95)00077-1." name="eprints.referencetext" />
<meta content="Reading, A.M. and Kennett, B.L.N. and Goleby, B. (2007) New constraints on the seismic structure of West Australia: Evidence for terrane stabilization prior to the assembly of an ancient continent? Geology, 35 (4). pp. 379-382. ISSN 0091-7613" name="eprints.citation" />
<meta content="http://eprints.utas.edu.au/1743/1/Reading_2007_Geology.pdf" name="eprints.document_url" />
<link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" />
<meta content="New constraints on the seismic structure of West Australia: Evidence for terrane stabilization prior to the assembly of an ancient continent?" name="DC.title" />
<meta content="Reading, A.M." name="DC.creator" />
<meta content="Kennett, B.L.N." name="DC.creator" />
<meta content="Goleby, B." name="DC.creator" />
<meta content="260100 Geology" name="DC.subject" />
<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
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.
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
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
the tectonic units that formed the West Australian craton." name="DC.description" />
<meta content="2007-04" name="DC.date" />
<meta content="Article" name="DC.type" />
<meta content="PeerReviewed" name="DC.type" />
<meta content="application/pdf" name="DC.format" />
<meta content="http://eprints.utas.edu.au/1743/1/Reading_2007_Geology.pdf" name="DC.identifier" />
<meta content="http://dx.doi.org/10.1130/G23341A.1" name="DC.relation" />
<meta content="Reading, A.M. and Kennett, B.L.N. and Goleby, B. (2007) New constraints on the seismic structure of West Australia: Evidence for terrane stabilization prior to the assembly of an ancient continent? Geology, 35 (4). pp. 379-382. ISSN 0091-7613" name="DC.identifier" />
<meta content="http://eprints.utas.edu.au/1743/" name="DC.relation" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/BibTeX/epprod-eprint-1743.bib" title="BibTeX" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/ContextObject/epprod-eprint-1743.xml" title="OpenURL ContextObject" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/ContextObject::Dissertation/epprod-eprint-1743.xml" title="OpenURL Dissertation" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/ContextObject::Journal/epprod-eprint-1743.xml" title="OpenURL Journal" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/DC/epprod-eprint-1743.txt" title="Dublin Core" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/DIDL/epprod-eprint-1743.xml" title="DIDL" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/EndNote/epprod-eprint-1743.enw" title="EndNote" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/HTML/epprod-eprint-1743.html" title="HTML Citation" type="text/html; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/METS/epprod-eprint-1743.xml" title="METS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/MODS/epprod-eprint-1743.xml" title="MODS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/RIS/epprod-eprint-1743.ris" title="Reference Manager" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/Refer/epprod-eprint-1743.refer" title="Refer" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/Simple/epprod-eprint-1743text" title="Simple Metadata" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/Text/epprod-eprint-1743.txt" title="ASCII Citation" type="text/plain; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1743/XML/epprod-eprint-1743.xml" title="EP3 XML" type="text/xml" />
</head>
<body bgcolor="#ffffff" text="#000000" onLoad="loadRoutine(); MM_preloadImages('images/eprints/ePrints_banner_r5_c5_f2.gif','images/eprints/ePrints_banner_r5_c7_f2.gif','images/eprints/ePrints_banner_r5_c8_f2.gif','images/eprints/ePrints_banner_r5_c9_f2.gif','images/eprints/ePrints_banner_r5_c10_f2.gif','images/eprints/ePrints_banner_r5_c11_f2.gif','images/eprints/ePrints_banner_r6_c4_f2.gif')">
<div class="ep_noprint"><noscript><style type="text/css">@import url(http://eprints.utas.edu.au/style/nojs.css);</style></noscript></div>
<table width="795" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><script language="JavaScript1.2">mmLoadMenus();</script>
<table border="0" cellpadding="0" cellspacing="0" width="795">
<!-- fwtable fwsrc="eprints_banner_final2.png" fwbase="ePrints_banner.gif" fwstyle="Dreamweaver" fwdocid = "1249563342" fwnested="0" -->
<tr>
<td><img src="/images/eprints/spacer.gif" width="32" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="104" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="44" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="105" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="41" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="16" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="82" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="69" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="98" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="12"><img name="ePrints_banner_r1_c1" src="/images/eprints/ePrints_banner_r1_c1.gif" width="795" height="10" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="10" border="0" alt="" /></td>
</tr>
<tr>
<td rowspan="6"><img name="ePrints_banner_r2_c1" src="/images/eprints/ePrints_banner_r2_c1.gif" width="32" height="118" border="0" alt="" /></td>
<td rowspan="5"><a href="http://www.utas.edu.au/"><img name="ePrints_banner_r2_c2" src="/images/eprints/ePrints_banner_r2_c2.gif" width="104" height="103" border="0" alt="" /></a></td>
<td colspan="10"><img name="ePrints_banner_r2_c3" src="/images/eprints/ePrints_banner_r2_c3.gif" width="659" height="41" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="41" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="3"><a href="http://eprints.utas.edu.au/"><img name="ePrints_banner_r3_c3" src="/images/eprints/ePrints_banner_r3_c3.gif" width="190" height="31" border="0" alt="" /></a></td>
<td rowspan="2" colspan="7"><img name="ePrints_banner_r3_c6" src="/images/eprints/ePrints_banner_r3_c6.gif" width="469" height="37" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="31" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="3"><img name="ePrints_banner_r4_c3" src="/images/eprints/ePrints_banner_r4_c3.gif" width="190" height="6" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="6" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="2"><img name="ePrints_banner_r5_c3" src="/images/eprints/ePrints_banner_r5_c3.gif" width="149" height="1" border="0" alt="" /></td>
<td rowspan="2" colspan="2"><a href="/information.html" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821132634_0,0,25,null,'ePrints_banner_r5_c5');MM_swapImage('ePrints_banner_r5_c5','','/images/eprints/ePrints_banner_r5_c5_f2.gif',1);"><img name="ePrints_banner_r5_c5" src="/images/eprints/ePrints_banner_r5_c5.gif" width="57" height="25" border="0" alt="About" /></a></td>
<td rowspan="2"><a href="/view/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133021_1,0,25,null,'ePrints_banner_r5_c7');MM_swapImage('ePrints_banner_r5_c7','','/images/eprints/ePrints_banner_r5_c7_f2.gif',1);"><img name="ePrints_banner_r5_c7" src="/images/eprints/ePrints_banner_r5_c7.gif" width="68" height="25" border="0" alt="Browse" /></a></td>
<td rowspan="2"><a href="/perl/search/simple" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133201_2,0,25,null,'ePrints_banner_r5_c8');MM_swapImage('ePrints_banner_r5_c8','','/images/eprints/ePrints_banner_r5_c8_f2.gif',1);"><img name="ePrints_banner_r5_c8" src="/images/eprints/ePrints_banner_r5_c8.gif" width="68" height="25" border="0" alt="Search" /></a></td>
<td rowspan="2"><a href="/perl/register" onMouseOut="MM_swapImgRestore();MM_startTimeout();" onMouseOver="MM_showMenu(window.mm_menu_1018171924_3,0,25,null,'ePrints_banner_r5_c9');MM_swapImage('ePrints_banner_r5_c9','','/images/eprints/ePrints_banner_r5_c9_f2.gif',1);"><img name="ePrints_banner_r5_c9" src="/images/eprints/ePrints_banner_r5_c9.gif" width="68" height="25" border="0" alt="register" /></a></td>
<td rowspan="2"><a href="/perl/users/home" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133422_4,0,25,null,'ePrints_banner_r5_c10');MM_swapImage('ePrints_banner_r5_c10','','/images/eprints/ePrints_banner_r5_c10_f2.gif',1);"><img name="ePrints_banner_r5_c10" src="/images/eprints/ePrints_banner_r5_c10.gif" width="82" height="25" border="0" alt="user area" /></a></td>
<td rowspan="2"><a href="/help/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133514_5,0,25,null,'ePrints_banner_r5_c11');MM_swapImage('ePrints_banner_r5_c11','','/images/eprints/ePrints_banner_r5_c11_f2.gif',1);"><img name="ePrints_banner_r5_c11" src="/images/eprints/ePrints_banner_r5_c11.gif" width="69" height="25" border="0" alt="Help" /></a></td>
<td rowspan="3" colspan="4"><img name="ePrints_banner_r5_c12" src="/images/eprints/ePrints_banner_r5_c12.gif" width="98" height="40" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
</tr>
<tr>
<td rowspan="2"><img name="ePrints_banner_r6_c3" src="/images/eprints/ePrints_banner_r6_c3.gif" width="44" height="39" border="0" alt="ePrints home" /></td>
<td><a href="/" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('ePrints_banner_r6_c4','','/images/eprints/ePrints_banner_r6_c4_f2.gif',1);"><img name="ePrints_banner_r6_c4" src="/images/eprints/ePrints_banner_r6_c4.gif" width="105" height="24" border="0" alt="ePrints home" /></a></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="24" border="0" alt="" /></td>
</tr>
<tr>
<td><img name="ePrints_banner_r7_c2" src="/images/eprints/ePrints_banner_r7_c2.gif" width="104" height="15" border="0" alt="" /></td>
<td colspan="8"><img name="ePrints_banner_r7_c4" src="/images/eprints/ePrints_banner_r7_c4.gif" width="517" height="15" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="15" border="0" alt="" /></td>
</tr>
</table></td>
</tr>
<tr><td><table width="100%" style="font-size: 90%; border: solid 1px #ccc; padding: 3px"><tr>
<td align="left"><a href="http://eprints.utas.edu.au/cgi/users/home">Login</a> | <a href="http://eprints.utas.edu.au/cgi/register">Create Account</a></td>
<td align="right" style="white-space: nowrap">
<form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/search" style="display:inline">
<input class="ep_tm_searchbarbox" size="20" type="text" name="q" />
<input class="ep_tm_searchbarbutton" value="Search" type="submit" name="_action_search" />
<input type="hidden" name="_order" value="bytitle" />
<input type="hidden" name="basic_srchtype" value="ALL" />
<input type="hidden" name="_satisfyall" value="ALL" />
</form>
</td>
</tr></table></td></tr>
<tr>
<td class="toplinks"><!-- InstanceBeginEditable name="content" -->
<div align="center">
<table width="720" class="ep_tm_main"><tr><td align="left">
<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>
<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
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.
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
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
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 > 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&eprintid=1743">item control page</a></p>
</td></tr></table>
</div>
<!-- InstanceEndEditable --></td>
</tr>
<tr>
<td><!-- #BeginLibraryItem "/Library/footer_eprints.lbi" -->
<table width="795" border="0" align="left" cellpadding="0" class="footer">
<tr valign="top">
<td colspan="2"><div align="center"><a href="http://www.utas.edu.au">UTAS home</a> | <a href="http://www.utas.edu.au/library/">Library home</a> | <a href="/">ePrints home</a> | <a href="/contact.html">contact</a> | <a href="/information.html">about</a> | <a href="/view/">browse</a> | <a href="/perl/search/simple">search</a> | <a href="/perl/register">register</a> | <a href="/perl/users/home">user area</a> | <a href="/help/">help</a></div><br /></td>
</tr>
<tr><td colspan="2"><p><img src="/images/eprints/footerline.gif" width="100%" height="4" /></p></td></tr>
<tr valign="top">
<td width="68%" class="footer">Authorised by the University Librarian<br />
© University of Tasmania ABN 30 764 374 782<br />
<a href="http://www.utas.edu.au/cricos/">CRICOS Provider Code 00586B</a> | <a href="http://www.utas.edu.au/copyright/copyright_disclaimers.html">Copyright & Disclaimers</a> | <a href="http://www.utas.edu.au/accessibility/index.html">Accessibility</a> | <a href="http://eprints.utas.edu.au/feedback/">Site Feedback</a> </td>
<td width="32%"><div align="right">
<p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><img src="http://www.utas.edu.au/shared/logos/unioftasstrip.gif" alt="University of Tasmania Home Page" width="260" height="16" border="0" align="right" /></a></p>
<p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><br />
</a></p>
</div></td>
</tr>
<tr valign="top">
<td><p> </p></td>
<td><div align="right"><span class="NoPrint"><a href="http://www.eprints.org/software/"><img src="/images/eprintslogo.gif" alt="ePrints logo" width="77" height="29" border="0" align="bottom" /></a></span></div></td>
</tr>
</table>
<!-- #EndLibraryItem -->
<div align="center"></div></td>
</tr>
</table>
</body>
</html>
