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* A prior study to establish which sedimentary units in the basin are oil source rocks or possess source rock potential.
 
* A prior study to establish which sedimentary units in the basin are oil source rocks or possess source rock potential.
 
* Have at least two of the three major groups of geochemical parameters (elemental, [[Wikipedia:Isotope geochemistry|isotopic]], molecular) support the positive correlation before it can be considered valid. (In the case of the NL oils, [[Wikipedia:Isotope geochemistry|isotopic]] and molecular data both support the correlation.)
 
* Have at least two of the three major groups of geochemical parameters (elemental, [[Wikipedia:Isotope geochemistry|isotopic]], molecular) support the positive correlation before it can be considered valid. (In the case of the NL oils, [[Wikipedia:Isotope geochemistry|isotopic]] and molecular data both support the correlation.)
* Be geologically reasonable, with a migration pathway available between source and reservoir at the time migration occurred.
+
* Be geologically reasonable, with a [[migration pathway]] available between source and reservoir at the time migration occurred.
    
==See also==
 
==See also==

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