<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:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @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;} --> </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 Ypresian 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 Eocene Series and Ypresian Stage is defined in the DBH Subsection of the Dababiya Section, near Luxor, Egypt, at the base of a lithostratigraphic unit where the initiation of the so-called Carbon Isotope Excursion (CIE) is recorded. </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 Ypresian boundary is located at the Dababiya section, a composite of a series of adjacent overlapping sections (DBA, DBE, DBH, AND DBD), on the east bank of the Nile River, 25km south of Luxor. The GSSP is located in the DBH subsection 1.57m above the base of the subsection. The GSSP location is approximately at a latitude of 2530'N and a longitude of 3231'52&quot;E. </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"'>The Dababiya Quarry Beds are 3.68m thick in the DBH subsection. The GSSP lies at the base of Bed 1. </span></p> <p><span lang=EN-US style='font-family:"Arial","sans-serif"'>Bed 5: 1.00m thick, marly calcarenitic limestone. Bed 4: 0.71m thick, grey shale. Bed 3: 0.84m thick, cream colored laminated phosphatic shale with sparse coprolites. Bed 2: 0.5m thick, phosphatic brown shale with numerous coprolites. Bed 1: 0.63cm thick, dark laminated non-calcareous clay with a few phosphatic coprolites at the base. </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 style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'>The GSSP is located at the base of a lithostratigraphic unit where the base of the so-called Carbon Isotope Excursion (CIE) is recorded </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"'>Foraminifera:</span></b><span lang=EN-US style='font-family:"Arial","sans-serif"'><br> <i>Acarinina sibaiyaensis</i> and <i>Acarinina africana</i> appear for the first time 2.5m above the base of the outcrop.<br> <b>Nannoplankton:</b><br> <i>Discoaster anartios</i> appears for the first time 2.3m above the base of the outcrop. </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"'>Carbon Isotope Excursion base, initiation of basal Eocene Thermal maximum (&quot;PETM&quot;) </span></p> <h4><span lang=EN-US style='font-family:"Arial","sans-serif"'>Notes on Derivation of Age:</span></h4> <p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'>Astronomical cycles in sediments scaled from base-Paleocene </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"'>Dupuis, C., Aubry, M., Steurbaut, E., Berggren, W.A., Ouda, K., Magioncalda, R., Cramer, B. S., Kent, D. V., Speijer, R. P., and Heilmann-Clausen, C., 2003. TheDababiya Quarry Section: Lithostratigraphy, clay mineralogy, geochemistry and paleontology. Micropaleontology 49/1, p.41 - 59.</span></p> <p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>&nbsp;</span></p> <p style='margin-left:36.0pt;text-indent:-36.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif"'><a href="Ypresian.pdf">Aubry, M-P., Ouda, K., Dupuis, C., Berggren, W.A., Van Couvering, J.A., and the members of the Working Group on the Paleocene/Eocene Boundary, 2007. The Global Standard Stratotype-section and Point (GSSP) for the base of the Eocene Series in Dababiya section (Egypt). Episodes 30/4, p. 271 - 286.</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>