tag:blogger.com,1999:blog-42932233067100544202024-02-18T20:33:34.625-08:00Birt and Rupes Recta platelunar domeshttp://www.blogger.com/profile/02677190757447124198noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-4293223306710054420.post-8991438046988136422014-07-06T12:35:00.000-07:002014-07-07T08:58:09.812-07:00<div align="center" class="MsoNormal" style="text-align: center;">
<span lang="EN-US" style="color: #3366ff;"><span style="font-size: x-large;"><b>Birt and Rupes Recta region</b></span><span style="font-size: 26pt;"><o:p></o:p></span></span></div>
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<b><i><span lang="EN-US" style="color: #3366ff; font-family: 'Times New Roman', serif;"><span style="font-size: large;">Birt bisected domes (termed Birt 1-2)</span></span></i></b></div>
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<span style="color: blue; font-size: large;"><b><i>by Mike Wirths</i></b></span></div>
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<span style="color: blue; font-size: large;"><b><i><br /></i></b></span></div>
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<b style="color: blue; font-size: x-large;"><i>by Mike Wirths</i></b></div>
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<b style="color: blue; font-size: x-large;"><i><br /></i></b></div>
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<b style="color: blue; font-size: x-large;"><i>by Mike Wirths</i></b></div>
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<span style="color: blue; font-size: large;"><b><i>by George Tarsoudis</i></b></span></div>
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<span style="font-size: large;"><b><span style="font-family: Calibri, sans-serif;">Dome </span></b><span style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<span style="font-size: large;"><b><span style="font-family: Calibri, sans-serif;">Longitude </span></b><span style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<span style="font-size: large;"><b><span style="font-family: Calibri, sans-serif;">Latitude </span></b><span style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<span style="font-size: large;"><b><span style="font-family: Calibri, sans-serif;">Diameter [km] </span></b><span style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<span style="font-size: large;"><b><span style="font-family: Calibri, sans-serif;">Heigth [m] </span></b><span style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<span style="font-size: large;"><b><span style="font-family: Calibri, sans-serif;">Slope[°] </span></b><span style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<b><span style="font-family: Calibri, sans-serif;"><span style="font-size: large;">Birt 1 <o:p></o:p></span></span></b></div>
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<span style="font-size: large;"><b><span style="font-family: Calibri, sans-serif;">Birt 2</span></b><span style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><span style="font-size: large;">-9.66° <o:p></o:p></span></span></b></div>
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<span style="font-size: large;"><b><span lang="EN-US" style="font-family: Calibri, sans-serif;">-9.98°</span></b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><span style="font-size: large;">-20.73°<o:p></o:p></span></span></b></div>
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<span style="font-size: large;"><b><span lang="EN-US" style="font-family: Calibri, sans-serif;">-20.39° </span></b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><span style="font-size: large;">16.0 ± 0.5<o:p></o:p></span></span></b></div>
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<span style="font-size: large;"><b><span lang="EN-US" style="font-family: Calibri, sans-serif;">7.8 ± 0.5</span></b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><span style="font-size: large;"> 170 ± 20<o:p></o:p></span></span></b></div>
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<span lang="EN-US" style="font-family: Calibri, sans-serif;"><span style="font-size: large;"> <b> 70
± 10</b><o:p></o:p></span></span></div>
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<b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><span style="font-size: large;">1.2 ± 0.1 <o:p></o:p></span></span></b></div>
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<span style="font-size: large;"><b><span lang="EN-US" style="font-family: Calibri, sans-serif;">1.0 ± 0.1</span></b><span lang="EN-US" style="font-family: Calibri, sans-serif;"><o:p></o:p></span></span></div>
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<span style="font-size: large;">Two bisected domes near the crater Birt in Mare Nubium are situated at the northern end of Rima Birt, supporting a volcanic origin of the rille. It is a slightly curved rille of more than 50 km length and displays an offset in its central section. Rima Birt, the major axes of the vents of the domes, the outflow channel of Birt 1, and the linear rille associated with Birt 2 are oriented in parallel, approximately in the same direction as Rupes Recta and thus radial to the Imbrium basin. The formation of the different parts of Rima Birt is likely related to the stress field resulting from the ascent of one or several dikes to shallow depth below the surface, where some of the intruded magma reached the surface and formed the low domes B1 and B2. Birt 1 belongs to class C</span>1<span style="font-size: large;">, while Birt 2 belongs to class C</span>1<span style="font-size: large;"> with a tendency towards class C</span>2<span style="font-size: large;"> due to its smaller diameter and lower edifice volume.</span> </div>
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