论文部分内容阅读
从新疆哈密地区石城子北剖面7件样品获得分异度较高、有机质壁显著炭化保存的疑源类化石,根据其形态特征,共鉴定出14个形态属和15个形态种(其中8个未定种,3个比较种)。结合国内外古生代晚泥盆世已知疑源类组合进行比较,清楚表明当前获得的疑源类组合代表了晚泥盆世海洋微体浮游植物群面貌。我国涉及晚古生代疑源类生物地层的调查研究相对薄弱,而有关晚泥盆世疑源类化石的发现和报道更为匮乏,当前疑源类化石的发现,填补和丰富了新疆乃至国内晚泥盆世疑源类化石研究资料。该发现佐证了关于卡拉麦里洋在早石炭世闭合的认识;作为基础食物链的海洋微体浮游植物是重要成烃生物,晚泥盆世疑源类的保存预示研究区域具有石油、天然气勘察的前景。
According to their morphological characteristics, 14 morphological and 15 morphological species (8 of them were identified) were obtained from 7 samples of Shichengzi Northern section in Hami, Xinjiang. Not scheduled, 3 more species). Based on the comparison of known Palaeozoic and Late Devonian provenance combinations at home and abroad, it is clearly shown that the currently acquired hypocenter assemblages represent the appearance of marine microplankton phytoplankton in the Late Devonian. The investigation of biogenic strata related to the Late Palaeozoic is comparatively weak in our country. However, the discovery and reporting of the late-Devonian doubtful source fossils is even more scarce. The discovery of the fossil of doubtful origin fills up and enriches the late mud Fossil doubt-bearing fossil research data. This finding corroborated the understanding of the closure of the Early Carboniferous Sea in the Kalamaili Ocean. Marine microflora phytoplankton, as the basic food chain, is an important hydrocarbon-generating organism. The preservation of the Late Devonian doubtful source area indicates that the study area has petroleum and natural gas exploration prospect.