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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:creator>T. S. Lovering</dc:creator>
  <dc:date>1963</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Much of the disagreement over "&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;epigenetic&lt;/span&gt;&lt;span&gt;" And "&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Syngenetic&lt;/span&gt;&lt;span&gt;"&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Deposits&lt;/span&gt;&lt;span&gt;&amp;nbsp;Is Semantic; Some Ores And altered rocks are in part&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;syngenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;and in part&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;epigenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;and for them the term "&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;diplogenetic&lt;/span&gt;&lt;span&gt;" is proposed. All these terms are primarily time terms related to the contemporaneity of the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposit&lt;/span&gt;&lt;span&gt;&amp;nbsp;and the enclosing rock, but in a secondary sense they are space terms; they do not, however, imply process of formation or source of the chemical constituents. Process or source terms such as "magmatic," "hydro-thermal," "sedimentary" are generally satisfactory, but the process term "lateral secretion" is now vague in meaning. A more precise term is needed for the process of mobilization of elements from a solid rock and their transportation and redeposition elsewhere; for this process I propose the term "&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lithogene&lt;/span&gt;&lt;span&gt;" ("stone-born"), to stress the source and process as do "magmatic" and "sedimentary." Such&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposits&lt;/span&gt;&lt;span&gt;&amp;nbsp;could be derived from&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;syngenetic&lt;/span&gt;&lt;span&gt;,&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;diplogenetic&lt;/span&gt;&lt;span&gt;, or&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;epigenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposits&lt;/span&gt;&lt;span&gt;&amp;nbsp;through the action of metamorphic, hydrothermal, supergene or other solutions. If one wishes, however, to emphasize the distance the mobilized elements have moved from the source rock, the resulting&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposit&lt;/span&gt;&lt;span&gt;&amp;nbsp;can be described best as a locally derived&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lithogene&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposit&lt;/span&gt;&lt;span&gt;&amp;nbsp;("lateral secretion"), or as a regionally derived&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lithogene&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposit&lt;/span&gt;&lt;span&gt;&amp;nbsp;("product of regional metamorphism"). The classification of many&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposits&lt;/span&gt;&lt;span&gt;&amp;nbsp;such as&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;epigenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;replacement bodies of magnetite in limestone, and&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;syngenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;gold in recent placers is not controversial; however, where large parts of the mineral&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposit&lt;/span&gt;&lt;span&gt;&amp;nbsp;are made up both of&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;syngenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;elements and introduced elements, the term "&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;diplogenetic&lt;/span&gt;&lt;span&gt;" is appropriate. Examples include mineral&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposits&lt;/span&gt;&lt;span&gt;&amp;nbsp;in which&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;syngenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;cations are united with&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;epigenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;anions, as in fluorite replacements in limestones, or where the reverse relationship holds and&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;epigenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;cations are united to&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;syngenetic&lt;/span&gt;&lt;span&gt;&amp;nbsp;sulfur or other anions-as may be true of certain black cupriferous shales of the Mansfeld type. Guides for distinguishing the various types of mineral&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposits&lt;/span&gt;&lt;span&gt;&amp;nbsp;are discussed at length and include: mineralogy; texture; isotopic composition of hydrogen, carbon, oxygen, sulfur, and perhaps other elements; form; age relations; alteration; zoning; position and quantitative adequacy of supposed source rocks; lithology; structural geology; paleogeography; and regional geologic relations. The criteria developed are used in a critical review of several examples of controversial&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposits&lt;/span&gt;&lt;span&gt;-including the African Copper-belt&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;deposits&lt;/span&gt;&lt;span&gt;&amp;nbsp;and those of the graphitic schists of Fenno-Scandia.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.2113/gsecongeo.58.3.315</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Society of Economic Geologists</dc:publisher>
  <dc:title>Epigenetic, diplogenetic, syngenetic, and lithogene deposits</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>