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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Shirley P. Dutton</dc:contributor>
  <dc:contributor>Stephen C. Ruppel</dc:contributor>
  <dc:contributor>Tucker F. Hentz</dc:contributor>
  <dc:creator>Michael D. Lewan</dc:creator>
  <dc:date>2002</dc:date>
  <dc:description>&lt;p&gt;&lt;span class="EXLDetailsDisplayVal"&gt;&lt;span class="searchword"&gt;Timing&lt;/span&gt; of &lt;span class="searchword"&gt;oil&lt;/span&gt; and &lt;span class="searchword"&gt;gas&lt;/span&gt; &lt;span class="searchword"&gt;generation&lt;/span&gt; from Turonian and Smackover source rocks in the &lt;span class="searchword"&gt;central&lt;/span&gt; &lt;span class="searchword"&gt;Gulf&lt;/span&gt; &lt;span class="searchword"&gt;Coast&lt;/span&gt;&lt;span class="searchword"&gt;Interior&lt;/span&gt; &lt;span class="searchword"&gt;Zone&lt;/span&gt; was determined in one-dimensional burial-history curves (BHCs) using &lt;span class="searchword"&gt;hydrous&lt;/span&gt;-&lt;span class="searchword"&gt;pyrolysis&lt;/span&gt; &lt;span class="searchword"&gt;kinetic&lt;/span&gt; &lt;span class="searchword"&gt;parameters&lt;/span&gt;. The results predict that basal Smackover source-rock intervals with Type-IIS kerogen completed &lt;span class="searchword"&gt;oil&lt;/span&gt; &lt;span class="searchword"&gt;generation&lt;/span&gt; between 121 and 99 Ma, and Turonian source-rocks with Type-II kerogen remain immature over most of the same area. The only exception to the latter occurs in the northwestern part of the Mississippi salt basin, where initial stages of &lt;span class="searchword"&gt;oil&lt;/span&gt; &lt;span class="searchword"&gt;generation&lt;/span&gt; have started as a result of higher thermal gradients. This maturity difference between Turonian and Smackover source rocks is predicted with present-day thermal gradients. Predicted &lt;span class="searchword"&gt;oil&lt;/span&gt; &lt;span class="searchword"&gt;generation&lt;/span&gt; prior to the Sabine and Monroe uplifts suggests that a significant amount of the &lt;span class="searchword"&gt;oil&lt;/span&gt; emplaced in Cretaceous reservoirs of these uplifts would have been lost during periods of erosion. &lt;span class="searchword"&gt;Hydrous&lt;/span&gt;-&lt;span class="searchword"&gt;pyrolysis&lt;/span&gt; &lt;span class="searchword"&gt;kinetic&lt;/span&gt;&lt;span class="searchword"&gt;parameters&lt;/span&gt; predict that cracking of Smackover oil to gas started 52 Ma, which postdates major uplift and erosional events of the Sabine and Monroe uplifts. This generated gas would accumulate and persist in these uplift areas as currently observed. The predicted timing of oil and gas generation with hydrous-pyrolysis kinetic parameters is in accordance with the observed scarcity of oil from Turonian source rocks, predominance of gas accumulations on the Sabine and Monroe uplifts, and predominance of oil accumulations along the northern rim of the Interior Zone.&lt;/span&gt; &lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>American Geosciences Institute</dc:publisher>
  <dc:title>New insights on timing of oil and gas generation in the central Gulf Coast interior zone based on hydrous-pyrolysis kinetic parameters</dc:title>
  <dc:type>text</dc:type>
</oai_dc:dc>