The petrographic and geochemical signatures and implication of origin of the Middle and Upper Cambrian dolostone in eastern margin Tarim: Comparative studies with the Whirlpool point of the Western Canada Sedimentary Basin
文献类型：期刊论文
| 作者 | Qian YiXiong1; You DongHua1; Chen DaiZhao2; Qing HaiRuo3; He ZhiLiang4; Ma YuChun1; Tian Mian1; Xi BinBin1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 28期号:8页码:2525-2541 |
| 关键词 | Hydrothermal dolomite Diagenesis Geochemistry Fluid inclusion Cambrian Northeast Tarim |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Comparative studies fault/fracture controlled the hydrothermal dolomitization, occurred pervasively in Cambrian at the Whirlpool point outcrops, the Western Canada Sedimentary Basin, with regard to petrographic, geochemical, isotopic and fluid inclusion demonstrated that three major dolomitization events in the Middle Cambrian Moheshan Group and Upper Cambrian Tereshakeitaga Group at Wuzilitaga outcrop, Northeast Tarim basin, have been recorded. (1) Near-micritic dolostone and fine-medium crystalline dolostone, formed at low temperatures during early stages of diagenesis, similar to the replaced host rock ("matrix") in their succession and geochemical signatures; with negative value (-0. 47 parts per thousand similar to -0. 28 parts per thousand) and delta(18) O-PDB values (-7. 3 parts per thousand similar to -7. 43 parts per thousand) as well as the lower Sr contents (42. 75 x 10(-6)), rather higher content of Mn (312 x 10(-6) similar to 506 x 10(-6)) and Fe (0.2650% similar to 0. 403%); Sr-87/Sr-86 = 0. 71085; REE = 18.84 x 10(-6), delta Eu =0. 66, delta Ce =0. 81, the estamted temperature 47. 6 degrees C for near-micritic dolostone and 55. 12 degrees C for fine-medium crystalline dolostone. (2) Fine-medium and medium-coarse crystalline dolostone supposed to formed during intermediate or deep burial condition, with depleted delta(13) C-PDB(-1. 5 parts per thousand) and delta(18) O-PDB (- 8. 5 parts per thousand) as well as the lower Sr contents (56. 27 x 10(-6)), Mn (312 x 10(-6)) and Fe (0. 13%); with rather higher homogenization temperatures (up to 108. 34 degrees C at average temperature) and estimates of low and medium salinities (4% similar to 13. 7% NaCleqv). (3) Fractures and vugs-lining coarse or saddle dolomite precipitation, with the lowest Sr (29. 1 x 10(-6) similar to 49. 9 x 10(-6), the highest content Mn (498 x 10(-6) similar to 754 x 10(-6)) and Fe (0. 15% similar to 1. 14%), delta(13) C-PDB = -0. 48 parts per thousand and depleted delta(18) O-PDB = -8. 82 parts per thousand, Sr-87/Sr-86 = 0. 70996; REE = 15. 08 x 10(-6), delta Eu =0. 70, delta Ce =0. 78; formed under either relatively deeper burial conditions or possibly from hydrothermal fluids, which is supported by elevated homogenization temperatures (120 similar to 150 degrees C) and estimates of slightly higher salinities (5% similar to 12% NaCleqv) for saddle dolomites; and highest homogenization temperatures (140 similar to 180 degrees C) and estimates of medium to higher salinities (5% similar to 18% NaCleqv) for coarse and huge crystal dolomitse, in which completely occludes the fractures, breccias and vugs. Compare with the Cambrian hydrothermal dolomite (HTD) occurred at the Whirlpool point outcrops, the Western Canada Sedimentary Basin, which has been related to the hydrothermal fluids, expelled from the Rocky Mountain fold-and-thrust belt during the Laramide orogeny. |
| WOS关键词 | HYDROTHERMAL DOLOMITE ; DOLOMITIZATION ; EVOLUTION ; SEAWATER ; ALBERTA ; FLUIDS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000308275200019 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84198]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Qian YiXiong |
| 作者单位 | 1.SINOPEC, Wuxi Inst, Explorat & Prod Res Inst, Wuxi 214151, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Univ Regina, Regina, SK S4S 0A2, Canada 4.SINOPEC, Explorat & Dev Res Inst, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qian YiXiong,You DongHua,Chen DaiZhao,et al. The petrographic and geochemical signatures and implication of origin of the Middle and Upper Cambrian dolostone in eastern margin Tarim: Comparative studies with the Whirlpool point of the Western Canada Sedimentary Basin[J]. ACTA PETROLOGICA SINICA,2012,28(8):2525-2541. |
| APA | Qian YiXiong.,You DongHua.,Chen DaiZhao.,Qing HaiRuo.,He ZhiLiang.,...&Xi BinBin.(2012).The petrographic and geochemical signatures and implication of origin of the Middle and Upper Cambrian dolostone in eastern margin Tarim: Comparative studies with the Whirlpool point of the Western Canada Sedimentary Basin.ACTA PETROLOGICA SINICA,28(8),2525-2541. |
| MLA | Qian YiXiong,et al."The petrographic and geochemical signatures and implication of origin of the Middle and Upper Cambrian dolostone in eastern margin Tarim: Comparative studies with the Whirlpool point of the Western Canada Sedimentary Basin".ACTA PETROLOGICA SINICA 28.8(2012):2525-2541. |
入库方式： OAI收割
来源：地质与地球物理研究所
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