<html> <head> <meta http-equiv=Content-Type content="text/html; charset=unicode"> <meta name=Generator content="Microsoft Word 12 (filtered)"> <style> <!-- /* Font Definitions */ @font-face {font-family:[SO; panose-1:2 1 6 0 3 1 1 1 1 1;} @font-face {font-family:[SO; panose-1:2 1 6 0 3 1 1 1 1 1;} @font-face {font-family:"\@[SO"; panose-1:2 1 6 0 3 1 1 1 1 1;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; margin-bottom:.0001pt; font-size:12.0pt; font-family:[SO;} h3 {mso-style-link:"h 3 Char"; margin-right:0cm; margin-left:0cm; font-size:13.5pt; font-family:[SO; font-weight:bold;} h4 {mso-style-link:"h 4 Char"; margin-right:0cm; margin-left:0cm; font-size:12.0pt; font-family:[SO; font-weight:bold;} a:link, span.MsoHyperlink {color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {color:purple; text-decoration:underline;} p {margin-right:0cm; margin-left:0cm; font-size:12.0pt; font-family:[SO;} span.3Char {mso-style-name:"h 3 Char"; mso-style-link:"h 3"; font-family:[SO; font-weight:bold;} span.4Char {mso-style-name:"h 4 Char"; mso-style-link:"h 4"; font-family:"Cambria","serif"; font-weight:bold;} .MsoChpDefault {font-size:10.0pt;} @page WordSection1 {size:595.3pt 841.9pt; margin:72.0pt 90.0pt 72.0pt 90.0pt;} div.WordSection1 {page:WordSection1;} /* List Definitions */ ol {margin-bottom:0cm;} ul {margin-bottom:0cm;} --> </style> <!-- --> </head> <body lang=ZH-CN link=blue vlink=purple> <div class=WordSection1> <div id=mainContent> <h3><span lang=EN-US style='font-family:"Arial","sans-serif";color:blue'>GSSP for Frasnian Stage</span></h3> <p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"; color:red'>&nbsp;</span></p> <h4><span lang=EN-US style='font-family:"Arial","sans-serif";color:red'>Definition:</span></h4> <p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif";color:red'>The base of the Frasnian Stage which coincides with the base of the Upper Devonian is defined at the base of Bed 42' at Col du Puech de la Suque section E in southeastern Montagne Noire, France. The GSSP also coincides with the lower boundary of the Lower <i>asymmetricus</i> Zone which is defined by the first occurrence of the conodont <i>Ancyrodella rotundiloba</i>. </span></p> <table class=MsoNormalTable border=0 cellpadding=0> <tr> <td style='padding:.75pt .75pt .75pt .75pt'> <h4><span lang=EN-US style='font-family:"Arial","sans-serif"'>Location:</span></h4> <p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>The GSSP section is located at Col du Puech de la Suque section E in southeastern Montagne Noire, France. The section is located on the eastern slope of the hill 358, about 50m ENE from the crest, at 1.1km SE of St. Nazaire-de-Ladarez (1:25 000 Sheet St. Chinian, x = 660.67, y = 133.95). </span></p> </td> <td valign=bottom style='padding:.75pt .75pt .75pt .75pt'></td> </tr> </table> <p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'>&nbsp;</span></p> <table class=MsoNormalTable border=0 cellpadding=0> <tr> <td style='padding:.75pt .75pt .75pt .75pt'> <h4><span lang=EN-US style='font-family:"Arial","sans-serif"'>Sedimentology:</span></h4> <p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>Section E is characterized by a sequence of predominantly red and grey pelagic calcilutites, punctuated by hardgrounds that are mainly in the part of the sequence above the boundary level. </span></p> </td> <td valign=bottom style='padding:.75pt .75pt .75pt .75pt'></td> </tr> </table> <p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'>&nbsp;</span></p> <h4><span lang=EN-US style='font-family:"Arial","sans-serif"'>Primary Markers:</span></h4> <p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>The GSSP coincides with the first occurrence of the conodont species <i>Ancyrodella rotundiloba</i>.<br> There are 5 conodont associations recognizable in the section. In ascending order: </span></p> <ol start=1 type=1> <li class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>an interval in the lowest part of the zone characterized by the early form of <i>Ancyrodella rotundiloba</i>. </span></li> <li class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>an interval with both early and late forms of <i>Ancyrodella rotundiloba</i>. </span></li> <li class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>an interval with the early form of <i>Ancyrodella alata</i> and late form of <i>Ancyrodella rotundiloba</i>. </span></li> <li class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>an interval with <i>Ancyrodella rugosa</i> and the late forms of <i>Ancyrodella alata</i> and <i>Ancyrodella rotundiloba</i>. </span></li> <li class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>an interval with <i>Ancyrodella africana, Ancyrodella pramosica</i>, the late forms of <i>Ancyrodella alata</i> and <i>Ancyrodella rugosa</i> (only in the lower part). </span></li> </ol> <p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'>&nbsp;</span></p> <h4><span lang=EN-US style='font-family:"Arial","sans-serif"'>Secondary Markers:</span></h4> <p class=MsoNormal style='margin-bottom:12.0pt'><b><span lang=EN-US style='font-family:"Arial","sans-serif"'>Goniatites:</span></b><span lang=EN-US style='font-family:"Arial","sans-serif"'><br> The goniatites <i>Probeloceras</i> and <i>Petteroceras feisti</i> first appear low in the Lower <i>asymmetricus</i> Zone. </span></p> <h4><span lang=EN-US style='font-family:"Arial","sans-serif"'>Correlation Events:</span></h4> <p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'>Conodont FAD <i>Ancyrodella rotundiloba</i> </span></p> <h4><span lang=EN-US style='font-family:"Arial","sans-serif"'>References:</span></h4> <p style='margin-left:36.0pt;text-indent:-36.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'><a href="Frasnian.pdf">Klapper, G., Feist, R., and House, M. R., 1987. Decision on the Boundary Stratotype for the Middle/Upper Devonian Series Boundary. Episodes 10/2, p. 97-101.</a></span></p> <p class=MsoNormal><span lang=EN-US><br> <br> <a href="index.html">Back to GSSP Table</a></span></p> </div> </div> <!-- --> </body> </html>