Digital quantification of the miospore coloration to assess the thermal maturity: Novel RGB-based measuring technique |
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| Institution: | 1. PETROBRAS S.A. – CENPES R&D Center – GEOQ, Rua Horácio Macedo 950, Rio de Janeiro, RJ, Brazil;2. Fundação Gorceix, Rua Carlos Walter Marinho Campos 57, Ouro Preto, MG, Brazil;1. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China;2. State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS), Nanjing 210008, China;3. College of Paleontology, Shenyang Normal University, Shenyang 110034, China;4. Institute of Biology and Soil Science, Far East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok 690022, Russia;5. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The post depositional thermal maturity and its related chemical changes induce the sporomorphs color alteration, which is a common useful tool in the optical microscopy of the organic matters (OM) and their pre-geochemical studies. The present contribution uses the modern available opportunity of digital technology to achieve a quantifying system technique, which includes color measurements and their possible graphic presentation. The normal digital images of sporomorphs from several ages and geological settings are used to obtain color measurements in the form of digital Red, Green and Blue triple color system (RGB). These measurements were accomplished using some software programs such as Photoshop?© or ImageJ with employing average microscope setup. The triple RGB color readings are plotted on a ternary diagram, which is divided into three fields. These fields express the maturity levels. The presented new RGB-based quantifying technique is economic and provides a simple examination for maturity, which is linked to the hydrocarbon generation. This can partially replace or walk side by side with the vitrinite reflectance microscopy. |
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| Keywords: | Sporomorph coloration alteration Thermal maturity Digital quantification of miospore coloration RGB color assessment |
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