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Documented international enquiry on solid sedimentary fossil fuels; Coal: defin...
Alpern, B.; Lemos de Sousa, M. J.This paper deals with all solid sedimentary fossil fuels, i.e. coal, the main one for geological reserves and resources, peat, and oil shales. Definitions of coal ( < 50% ash) and coal seam (thickness and depth limits) are examined in view of an international agreement regarding new concepts for a common reserves and resources evaluation using the same nomenclature. The 50% ash limit, already adopted by UN-ECE ...
Presentation of the Methodology Elaborated for Optical Analyses of Borehole Sam...
Alpern, B.; Lemos de Sousa, M. J.; Pinheiro, H. J.; Marques, M. M.; Zhu, X.
Detection and evaluation of hydrocarbons in source rocks by fluorescence micros...
Alpern, B.; Lemos de Sousa, M. J.; Pinheiro, H. J.; Zhu, X.In pursing the detection of hydrocarbons in sedimentary rocks by conventional petrological methods, an attempt has been made to correlate standard fluorescence parameters with the quality and quantity of hydrocarbons present in crushed rocks embedded in epoxy resin. The capacity of the embedding resin, commonly used in the preparation of petrographic samples, to extract and physically fix hydrocarbons is recogn...
Optical Morphology of Hydrocarbons and Oil Progenitors in Sedimentary Rocks- Re...
Alpern, B.; Lemos de Sousa, M. J.; Pinheiro, H. J.The objective of the present research...
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