Influence of ionic composition on minerals and source rocks: An investigation between carbonate-type and sulfate-type lacustrine sediments based on hydrochemical classification
文献类型：期刊论文
| 作者 | Qi, Wen1; Wu, Jia2,3; Xia, Yanqing4; Zhang, Xilong4; Li, Zhiyong1; Chang, Jiang4; Bai, Jie1 |
| 刊名 | MARINE AND PETROLEUM GEOLOGY
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 130页码:13 |
| 关键词 | Carbonate-type salt lakes Sulfate-type salt lake Ions Salt mineral precipitation Smectite illitization Source rocks |
| ISSN号 | 0264-8172 |
| DOI | 10.1016/j.marpetgeo.2021.105099 |
| 英文摘要 | The geochemical characteristics and distribution of saline lacustrine source rocks are shaped up by the environment and conditions under which they develop. Such environments, in turn, are often heavily influenced by various salt minerals and clay minerals. Therefore, the current study aims to investigate the potential impact of common salt minerals and clays on the formation and chemical changes of source rocks in salt lakes. Instead of relying on conventional classification methods that emphasize salinity, this study divides common petroleum-bearing saline lacustrine sedimentary basins into two types, the carbonate-type and the sulfate-type, based on the hydrochemistry of salt lakes. Experimental comparison of inorganic geochemistry between samples from modern and ancient saline lacustrine sedimentary systems revealed key differences in ion composition, and resultantly in the sedimentary sequences of salt minerals, the transformation of clay minerals, and the evolution of source rocks. It is found that CaCO3-bearing minerals are the first to precipitate in both types of salt lakes. However, secondary mineral deposition in carbonate-type saline lacustrine systems features the precipitation of Na2CO3-bearing alkaline minerals due to the depletion of Ca2+. Meanwhile, the clay in carbonate-type salt lakes contains a relatively high level of smectite and mixed-layer illite/smectite, as well as low content of illite, implying an impediment in smectite illitization. In contrast, sulfate-type salt lakes are enriched in Ca2+ but depleted in CO32-, leading to the abundant development of Ca-bearing sulfate mineral deposits such as gypsum. These geochemical differences could be responsible for the propensity of carbonate-type salt lakes to harbor welldeveloped oil shale, and for the tendency of source rocks deposited in sulfate-type lacustrine systems to produce oils at the immature stage. |
| WOS关键词 | GREEN RIVER FORMATION ; PERMIAN FENGCHENG FORMATION ; NORTHWESTERN JUNGGAR BASIN ; DIAGENETIC SMECTITE ; ORGANIC-MATTER ; CLAY-MINERALS ; MAHU SAG ; LAKE ; TRANSFORMATION ; GEOCHEMISTRY |
| 资助项目 | [CNPC 2018D-500804] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000661870500001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102057]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Qi, Wen |
| 作者单位 | 1.PetroChina, Res Inst Petr Explorat & Dev Northwest NWGI, Lanzhou 730020, Peoples R China 2.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China 3.China Univ Petr, Coll Geosci, Beijing 102249, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Wen,Wu, Jia,Xia, Yanqing,et al. Influence of ionic composition on minerals and source rocks: An investigation between carbonate-type and sulfate-type lacustrine sediments based on hydrochemical classification[J]. MARINE AND PETROLEUM GEOLOGY,2021,130:13. |
| APA | Qi, Wen.,Wu, Jia.,Xia, Yanqing.,Zhang, Xilong.,Li, Zhiyong.,...&Bai, Jie.(2021).Influence of ionic composition on minerals and source rocks: An investigation between carbonate-type and sulfate-type lacustrine sediments based on hydrochemical classification.MARINE AND PETROLEUM GEOLOGY,130,13. |
| MLA | Qi, Wen,et al."Influence of ionic composition on minerals and source rocks: An investigation between carbonate-type and sulfate-type lacustrine sediments based on hydrochemical classification".MARINE AND PETROLEUM GEOLOGY 130(2021):13. |
入库方式： OAI收割
来源：地质与地球物理研究所
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