ORGANIC MATTER IN OIL SHALES
ORGANIC MATTER IN OIL SHALES
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DOI：
10.1071/aj79005
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
A. Hutton;A. Kantsler;A. Cook;D. McKirdy
中科院分区：
文献类型：
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作者：
A. Hutton;A. Kantsler;A. Cook;D. McKirdy
昆士兰州 Rundle 和美国西部 Green River 地层的第三系油页岩矿床，以及昆士兰州 Julia Creek 等中生代矿床，通过使用大规模采矿方法或使用原位加工，提供了具有竞争力的回收成本前景。根据有机质的来源和性质，提出了油页岩分类框架。大多数古生代油页岩中的有机质主要是大型、离散存在的藻体，称为褐藻岩 A。然而，澳大利亚东北部的第三纪油页岩主要由许多非常薄的有机质层组成，这些层与矿物神秘地互层。由于目前的显微物质命名法没有充分涵盖油页岩中大多数有机质的形态和光学性质，因此建议使用术语“藻岩 B”来表示细层状藻岩，使用术语“层状油页岩”来表示含有藻岩 B 作为其主要有机成分的油页岩。在Julia Creek 油页岩中，有机质非常细粒，含有一些藻胶B，但藻胶A 含量较高，因此属于混合成因油页岩。岩石学和化学技术都可用于识别油页岩中有机质的性质和多样性以及评估它们形成的环境。这种理解对于制定油页岩勘探概念是必要的。
The Tertiary oil-shale deposits at Rundle in Queensland and of the Green River Formation in the western USA, together with Mesozoic deposits such as those at Julia Creek in Queensland, offer prospects of competitive recovery cost through the use of large-scale mining methods or the use of in situ processing. A framework for the classification of oil shales is proposed, based on the origin and properties of the organic matter. The organic matter in most Palaeozoic oil shales is dominantly large, discretely occurring algal bodies, referred to as alginite A. However, Tertiary oil shales of northeastern Australia are chiefly composed of numerous very thin laminae of organic matter cryptically-interbedded with mineral matter. Because the present maceral nomenclature does not adequately encompass the morphological and optical properties of most organic matter in oil shales, it is proposed to use the term alginite B for finely lamellar alginite, and the term lamosites (laminated oil shales) for oil shales which contain alginite B as their dominant organic constituent. In the Julia Creek oil shale the organic matter is very fine-grained and contains some alginite B but has a higher content of alginite A and accordingly is assigned to a suite of oil shales of mixed origin. Petrological and chemical techniques are both useful in identifying the nature and diversity of organic matter in oil shales and in assessing the environments in which they were formed. Such an understanding is necessary to develop exploration concepts for oil shales.