METHOD OF DETERMINING PALEOTEMPERATURES OF CATAGENESIS OF VITRINITE-FREE DEPOSITS ON OPTICAL CHARACTERISTICS OF MICROPHYTOFOSSILS

摘要

FIELD: mining.SUBSTANCE: invention may be used to determine paleotemperatures of catagenesis that characterises the degree of catagenetic maturity of organic matter (OM) of rocks. The sampling of sediments is carried out from the studied rocks, the insoluble organic matter microphytofossils is isolated from them and studied with optical method with the determining of paleotemperature. The study with the optical method is carried out in two stages. At the first stage in transmitted light the dominant group of microphytofossils is isolated from the morphological groups of microphytofossils, the groups of thick-walled and thin-walled microphytofossils is isolated in it. For each isolated group the index of colour is determined. At the second stage of the study the quantitative characteristics are clarified on the basis of spectral characteristics of selected groups of microphytofossils in infrared band of light. The resulting estimates of paleotemperatures of microphytofossils are determined on the basis of comparing the results of studies of the first and second stages.EFFECT: improving reliability of determining paleotemperatures of catagenesis of vitrinite-free deposits.2 cl, 1 dwg, 2 tbl