Geochemical characteristics and tectonic significance of Carboniferous basalt in the Karamaili gas field of Junggar Basin
文献类型：期刊论文
| 作者 | Li Di1; He DengFa1; Fan Chun1; Tang Yong3; Yang XiaoFa2; Chang QiuSheng3; Yuan Hang1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-03-01 |
| 卷号 | 28期号:3页码:981-992 |
| 关键词 | Carboniferous Post-collision Arc component contamination Basement nature Tectonic evolution The Karamaili gas field Junggar Basin |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Karamaili gas field is located at Di'nan uplift of the south of Luliang uplift in Junggar Basin, Carboniferous volcanic rocks are the main reservoir of the gas field. The research about carboniferous volcanic rocks is of great significance to the region's reservoir distribution prediction, gas field development planning, and the study of the nature of basement and its tectonic and sedimentary evolution. In this paper, the study of well-Dixil7 focuses on petrology, geochemistry and tectonic environment. Carboniferous basalt of well-Dixil7 shows: the basalt is characterized by occurrence of olivine and clinopyroxene in phenocryst; matrix shows intergranular texture; feldspar is the almost basic plagioclase. These samples have relatively high Na2O content which ranges from 6.27% to 7.35%, but low K2O/Na2O ratios (0.01 similar to 0.03), relatively high TiO2 (3.00% similar to 3.63%) and P2O5 (0.83% similar to 1.03%) content, low-level enrichment in LREE ((La/Yb)(N) = 3.36 similar to 3.44), high Nb content (14.86 x 10(-6) 17.47 x 10(-6)). Primitive mantle standardized La/Nb ratio is less than 2.0. Th/Nb ratio is less than 1.0. All the incompatible elements are relatively high. These basalt rocks suggest weak Eu anomalies (delta Eu =0.90 similar to 0.93), with significant Ce anomalies. MORB standardized diagram of trace element exhibits LILE depletion, while HFSE enrichment relatively and weak negative Nb-Ta anomalies. Tectonic discrimination diagrams show that the set of basalt formed in an intraplate setting. These characteristics suggest that these basalts came from rift lithosphere under the upper mantle melt and that they are the production of extensional setting post-collisional period which is contaminated by arc component. Luliang uplift of Junggar Basin in the area have island-arc volcanic rocks mark, which provides evidence for the view of arc splicing basement of Junggar Basin, so it is inferred that there exists a potential pattern of multi-island tectonic framework in the Junggar Basin during Early Carboniferous period. |
| WOS关键词 | VOLCANIC-ROCKS ; MINDANAO PHILIPPINES ; EASTERN JUNGGAR ; CONSTRAINTS ; EVOLUTION ; CHINA ; DISCRIMINATION ; ENRICHMENT ; SETTINGS ; BASEMENT |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000303640700026 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84202]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li Di |
| 作者单位 | 1.China Univ Geosci, Key Lab Marine Reservoir Evolut & Hydrocarbon Acc, Minist Educ, Beijing 100083, Peoples R China 2.Xinjiang Oil Field Co, Inst Explorat & Dev, Karamay 834000, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Di,He DengFa,Fan Chun,et al. Geochemical characteristics and tectonic significance of Carboniferous basalt in the Karamaili gas field of Junggar Basin[J]. ACTA PETROLOGICA SINICA,2012,28(3):981-992. |
| APA | Li Di.,He DengFa.,Fan Chun.,Tang Yong.,Yang XiaoFa.,...&Yuan Hang.(2012).Geochemical characteristics and tectonic significance of Carboniferous basalt in the Karamaili gas field of Junggar Basin.ACTA PETROLOGICA SINICA,28(3),981-992. |
| MLA | Li Di,et al."Geochemical characteristics and tectonic significance of Carboniferous basalt in the Karamaili gas field of Junggar Basin".ACTA PETROLOGICA SINICA 28.3(2012):981-992. |
入库方式： OAI收割
来源：地质与地球物理研究所
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