On the issue of informativeness of mass spectral diagnostic relations and criteria based on them for testing geochemical hypotheses
T16N1
M.B. Smirnov1, N.P. Fadeeva
Quantitative evaluation of the 1st and 2nd order errors for mass spectral criteria is obtained. These errors have been earlier suggested for distinguishing the oils generated in carbonate and other rocks for the Domanik formation of the northern and central regions of the Volga-Urals. It is shown that none of them work: the best mistakes of both the 1st and 2nd kind errors are close to 50%. Consequently, for all regions where carbonate oil source rocks are possible, a work similar to this should be done primarily, and only after that the analysis of oils becomes meaningful. In addition, it is necessary to conduct quantitative assessments of the quality of all the other criteria used in petroleum geochemistry for which such assessments are technically possible. New criteria should be designed only on the basis of those composition parameters for which the value of the Mann-Whitney criterion is close to zero.