Search Results - "Moroeng, Ofentse M."

Organic petrographic and mineralogical composition of the No. 6 coal seam of the Soutpansberg Coalfield, South Africa: Insights into paleovegetation and depositional environment by Biswas, Sanki, Wagner, Nicola J., Moroeng, Ofentse M.

“…This study investigates the paleodepositional conditions of the No. 6 Seam of the Madzaringwe Formation in Makhado and Voorburg south area of the Soutpansberg…”
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Comparative study of a vitrinite-rich and an inertinite-rich Witbank coal (South Africa) using pyrolysis-gas chromatography by Moroeng, Ofentse M., Mhuka, Vimbai, Nindi, Mathew M., Roberts, R. James, Wagner, Nicola J.

“…This study aims to compare iso-rank vitrinite-rich and inertinite-rich coal samples to understand the impact of coal-forming processes on pyrolysis chemistry…”
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Characterization of coal using electron spin resonance: implications for the formation of inertinite macerals in the Witbank Coalfield, South Africa by Moroeng, Ofentse M., Keartland, Jonathan M., Roberts, R. James, Wagner, Nicola J.

“…Coal contains a significant concentration of free radicals as a result of the coalification process. One of the experimental methods sensitive to the presence…”
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Stable isotopes of organic carbon, palynology, and petrography of a thick low-rank Miocene coal within the Mile Basin, Yunnan Province, China: implications for palaeoclimate and sedimentary conditions by Liu, Jingjing, Dai, Shifeng, Hower, James C., Moore, Tim A., Moroeng, Ofentse M., Nechaev, Victor P., Petrenko, Tatiana I., French, David, Graham, Ian T., Song, Xiaolin

“…•Petrology, δ13C and gypsum of coal corroborate alternating dry and wet periods.•The fine-scale variability in the δ13C signature was controlled by plant…”
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Self-heating Potential of Coal Inferred from Elemental Data – A Case Study of the Witbank Coalfield of South Africa by Moroeng, Ofentse M, James Roberts, R, Bussio, John P, Dixon, Roger D

“…Initiation of self-heating is governed by a coal’s ability to oxidize at low temperatures. Aliphatics undergo low-temperature oxidation and are the main…”
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Effects of contact metamorphism on δ13C, δ15N, and XPS nitrogen functional forms of inertinite-rich Witbank coals (South Africa): Indications for possible alteration by hydrothermal fluids by Moroeng, Ofentse M.

“…In this study, δ13C, δ15N, and nitrogen functional forms were used to evaluate the effects of contact metamorphism on inertinite-rich Main Karoo Basin coals…”
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Characterization and pre-concentration of rare earth elements in density fractionated samples from the Waterberg Coalfield, South Africa by Chitlango, F. Zonke, Wagner, Nicola J., Moroeng, Ofentse M.

“…The increased global demand for rare earth elements (REEs) from unconventional sources has led to increased interest and research in coal deposits. South…”
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Enrichment of rare earth elements in epigenetic dolomite occurring in contact metamorphosed Witbank coals (South Africa) by Moroeng, Ofentse M., Murathi, Bridgette, Wagner, Nicola J.

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Petrology of the A and B Seams, Ermelo Coalfield (South Africa): Indications for changing palaeoenvironmental and sedimentary conditions by Mahooana, Papali E., Moroeng, Ofentse M., Wagner, Nicola J.

“…Petrological and mineralogical features are key for inferring palaeoenvironmental and sedimentary conditions of coal-bearing sediments. Following the logging…”
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Mineralogy and geochemical controls on the distribution of REY-Ga-Se-Nb enrichment in the No. 6 Coal Seam, Soutpansberg Coalfield, South Africa by Biswas, Sanki, Moroeng, Ofentse M., Wagner, Nicola J.

“…[Display omitted] •Geochemical and mineralogical characteristics of Soutpansberg coal were investigated.•The average REY+ Sc concentration in the coal is 213.2…”
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Raman Spectroscopy for the characterization of the macromolecular structure of Highveld coals (South Africa) by Matlala, Itumeleng V., Moroeng, Ofentse M., Kalaitzidis, Stavros, Wagner, Nicola J.

“…Industrial applications of coal rely on understanding its macromolecular structure, which is primarily controlled by coal type and rank. The present study…”
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Palaeoecology and palaeoclimate of an Early Cretaceous peat mire in East Laurasia (Hailar Basin, Inner Mongolia, China) by Wheeler, Alexander, Shen, Jian, Moore, Tim A., Moroeng, Ofentse M., Liu, Jingjing

“…In this contribution, we report the palynology, organic petrography and carbon isotopes for the #16 Seam in the Lower Cretaceous Yimin Formation of the Hailar…”
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Macromolecular structural changes in contact metamorphosed inertinite-rich coals from the No. 2 Seam, Witbank Coalfield (South Africa): Insights from petrography, NMR and XRD by Matlala, Itumeleng V., Moroeng, Ofentse M., Wagner, Nicola J.

“…The response of inertinite-rich Witbank coals (South Africa) to rapid heating was evaluated using petrography, selected Nuclear Magnetic Resonance (NMR) and…”
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Proceedings of the 38th Annual Conference of The Society for Organic Petrology: Organics in the geological cycle by Moore, Tim A., Huguet, Carme, Moroeng, Ofentse M., Sule, Carol I.

“…•Nine articles are reviewed for the VSI of the 38th Annual Conference of The Society for Organic Petrology…”
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Using carbon isotopes and organic composition to decipher climate and tectonics in the Early Cretaceous: An example from the Hailar Basin, Inner Mongolia, China by Moore, Tim A., Moroeng, Ofentse M., Shen, Jian, Esterle, Joan S., Pausch, Roman C.

“…When conducted in tandem, organic petrography and isotopic analyses can be used to interpret regional tectonics and palaeoclimate within a global context. As…”
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A Nuclear Magnetic Resonance study: Implications for coal formation in the Witbank Coalfield, South Africa by Moroeng, Ofentse M., Wagner, Nicola J., Brand, D. Jaco, Roberts, R. James

“…In this study, carbon-13 cross-polarization magic-angle-spinning solid-state nuclear magnetic resonance (13C CP-MAS SS NMR) was undertaken on a parent coal…”
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Using δ15N and δ13C and nitrogen functionalities to support a fire origin for certain inertinite macerals in a No. 4 Seam Upper Witbank coal, South Africa by Moroeng, Ofentse M., Wagner, Nicola J., Hall, Grant, Roberts, R. James

“…•Inertinite- and vitrinite-rich sub-samples were prepared using density separation.•The coal samples were compared using δ15N and δ13C and nitrogen…”
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Comparative study of a vitrinite-rich and an inertinite-rich Witbank coal by Moroeng, Ofentse M, Mhuka, Vimbai, Nindi, Mathew M, Roberts, R. James, Wagner, Nicola J

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