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attributes_murphy.html
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<!DOCTYPE html>
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<head>
<title>AASPI | about</title>
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<td rowspan="2"><img src="images/aaspi.png" alt="AASPI" /></td>
<td class="header_text"><h1>AASPI @ ConocoPhillips School of Geology & Geophysics</h1></td>
<td rowspan="2"><img src="images/cpsgg.png" alt="CPSGG" /></td>
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<td class="header_text"><h3>Attribute Assisted Seismic Processing & Interpretation | The University of Oklahoma</h3></td>
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<h2 style="font-size:185%;">Attribute Resource Table</h2>
<!--beggining of table-->
<h2>Desicion Tree For Attributes</h2>
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<tr>
<th height="50" bgcolor="#670001" style="font-size:200%; text-align:center;" colspan="9"><font color="#F1ECD9"> Seismic Expression of Facies </font></th>
</tr>
<tr>
<th bgcolor="#670001" style="font-size:120%; text-align:center;" colspan="1" ><font color="#F1ECD9">Geologic Facies</font></th>
<th bgcolor="#670001" style="font-size:120%; text-align:center;" colspan="2"><font color="#F1ECD9">Visual Expression</font></th>
<th bgcolor="#670001" style="font-size:120%; text-align:center;" colspan="6"><font color="#F1ECD9">Attribute Expression</font></th>
</tr>
<tr>
<th> </th>
<th>Reflection Configuration</th>
<th>External Forms</th>
<th>Amplitude</th>
<th>Coherence</th>
<th>Dip</th>
<th>Curvature</th>
<th>Spectra</th>
<th>Texture</th>
</tr>
<tr>
<th> Pelagic Drape</th>
<td>Parallel to subparallel</td>
<td>Sheet Drape</td>
<td>Low to Moderate</td>
<td>Moderate to High</td>
<td>Parallel to subparallel, convergent at the onlap surfaces</td>
<td>low</td>
<td>Moderate to high spectral response</td>
<td>Low entropy</td>
</tr>
<tr>
<th>Progradation clinoform</th>
<td>Progradational</td>
<td>Wedgedge</td>
<td>Moderate to High</td>
<td>Moderate to High: Low at terminations</td>
<td>Subparallel, convergent at the downlap and toplap surfaces</td>
<td>positive and negative curvature anomalies</td>
<td>High spectral response</td>
<td>Low entropy</td>
</tr>
<tr>
<th>Mass Transport Deposits</th>
<td>Locally subparallel bedding</td>
<td>Piecewise rotated blocks</td>
<td>Variable</td>
<td>Piecewise coherent</td>
<td>Piecewise parallel, convergent across blocks</td>
<td>Anomalies associated with lateral changes in block orientation</td>
<td>Variable; difference in each block</td>
<td>High entropy interspersed with high homogeneity</td>
</tr>
<tr>
<th>Volcanic Tuff</th>
<td>Low reflectivity, almost transparent</td>
<td>Locally thick package with unconformable base and relatively smooth top</td>
<td>Anomalously low</td>
<td>Relatively incoherent because of lower signal-to-noise ratio</td>
<td>Parallel, near flat if discernable</td>
<td>No meaningful anomalies</td>
<td>Low frequency response</td>
<td>High entropy due to lack of reflectivity</td>
</tr>
<tr>
<th>Lava Flows</th>
<td>Tongue-like patterns</td>
<td>Emanating from the volcanic cone</td>
<td>High amplitude</td>
<td>Possible anomalies associated with vents and fissures</td>
<td>Subparallel to flanks of volcanic cone</td>
<td>Possible anomalies associated with vents and fissures</td>
<td>Broadband response</td>
<td>Low entropy</td>
</tr>
<tr>
<th>Igneous sills</th>
<td>Localized by large in size; incoherent</td>
<td>Cone-shaped with onlapping reflectors; deeper conduit poorly imaged due to velocity pull up and steep dips</td>
<td>High to moderate amplitude</td>
<td>Internally low coherence</td>
<td>Chaotic</td>
<td>Chaotic, generally meaningless anomalies</td>
<td>Low frequency response</td>
<td>High entropy</td>
</tr>
<tr>
<th>CO2 and CH4 Charged Sand</th>
<td>Bright spots</td>
<td>High amplitude anomalies, possibly with different phase; relatively flat</td>
<td>High amplitude; Negative reflectivity in shallow section; Possible lateral change in phase from non-charged facies</td>
<td>Coherent</td>
<td>Flat dip</td>
<td>No meaningful anomalies</td>
<td>Broadband to low frequency response</td>
<td>Low entropy</td>
</tr>
</tbody>
</table>
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<p><a href="http://www.ou.edu/mcee/geology.html">ConocoPhillips School of Geology
& Geophysics</a> | <a href="http://www.ou.edu/mcee.html">Mewbourne College
of Earth & Energy</a> | <a href="http://www.ou.edu/web.html">The University
of Oklahoma</a></p>
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Date of last revision: 04 April, 2016<br />
© Copyright 2015 The Board of Regents of the University of Oklahoma | All
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