Source-controlled carbonates in a small Eocene half-graben lake basin (Shulu Sag) in central Hebei Province, North China
文献类型：期刊论文
| 作者 | Jiang, Zaixing; Chen, Daizhao; Qiu, Longwei; Liang, Hongbin; Ma, Jun |
| 刊名 | SEDIMENTOLOGY
 |
| 出版日期 | 2007-04-01 |
| 卷号 | 54期号:2页码:265-292 |
| 关键词 | alluvial fan carbonates debrisflow half-graben lake North China Tertiary varve |
| ISSN号 | 0037-0746 |
| DOI | 10.1111/j.1365-3091.2006.00834.x |
| 文献子类 | Article |
| 英文摘要 | Carbonate deposits, which unconformably overlie the Palaeozoic bedrocks, extensively occur in the base of the Tertiary lake succession in the half-graben Shulu Sag, central Hebei Province, North China. This study focuses on the basal carbonate successions on the hinged western slope. Based on seismic, borehole and core data, nine facies are identified in the carbonate successions, and are further grouped into five facies associations: mid-proximal alluvial fan, distal alluvial fan, fan fringe, moderately deep lake and deep lake. The first two facies associations constitute alluvial fans formed by debrisflows at the edge of lake and are dominated by mounded- to lobate-shaped, matrix- to clast-supported carbonate rudstones with minor calcretes in the lowermost rudstone units and basinward increase in interfingering with lacustrine carbonate facies. The fan fringe, moderately deep lake and deep lake associations are dominated by pebbly carbonate arenites (or rare carbonate arenites), calcisiltite-calcilutites, and varve-like calcilutites, calcareous shales and oil shales, respectively. Widespread occurrences of fine-grained limestone packages containing varve-like organic-rich laminations, minor authigenic glauconite and pyrite, and planktonic and plant fossils suggest a meromictic, anoxic deep lake under a semi-humid to humid climate, probably with a connection to marine basins. Similarities in lithology and fossil assemblages (e.g. trilobites) of lithoclasts with those of the Mid-Upper Cambro-Ordovician bedrock carbonates suggest that the clastic and dissolved carbonate loads were sourced from this Lower Palaeozoic catchment, and shed off the surrounding highlands into the basin. These carbonate facies associations represent the lake lowstand and transgressive deposits of the basal third-order sequence (Ia) in which the highstand deposits are composed of lacustrine siliciclastics. During the lake lowstand stage (or initiation of basin-filling) under an intermediate climate, carbonate alluvial fans occurred mostly subaerially at the bottom of the hinged slope with a narrow, shallow lake zone basinwards, and locally were perched within the palaeovalley on the mid-upper slope. During the transgressive (deepening) stage under a semi-humid to humid climate, carbonate alluvial fans became smaller in size and episodically stepped backwards upon the slope, with greatly expanded and deepened lake. Nevertheless, the carbonate system was switched to an exclusively siliciclastic system during the highstand stage. The exhumation and erosion of the Mid-Lower Cambrian bedrock dominated by siliciclastics was probably the cause due to further uplift of the drainage basin. All these facts indicate that the carbonate deposition in the Shulu Sag was mostly controlled by the interactions of tectonics, climate and provenance. |
| WOS关键词 | SEDIMENT GRAVITY FLOWS ; DENSITY TURBIDITY CURRENTS ; LARGE RIFT LAKES ; SEQUENCE STRATIGRAPHY ; DEBRIS-FLOW ; DEATH-VALLEY ; ALLUVIAL-FAN ; EXAMPLE ; FACIES ; SPAIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000244886600002 |
| 出版者 | BLACKWELL PUBLISHING |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68232]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Jiang, Zaixing |
| 作者单位 | 1.China Univ Geosci, Coll Energy, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Petr Univ, Fac Earth Resources & Informat, Dongying 257061, Shandong, Peoples R China 4.China Natl Petr Corp, Huabei Oil Co, Res Inst Petr Explorat & Dev, Renqiu 062552, Hebei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Zaixing,Chen, Daizhao,Qiu, Longwei,et al. Source-controlled carbonates in a small Eocene half-graben lake basin (Shulu Sag) in central Hebei Province, North China[J]. SEDIMENTOLOGY,2007,54(2):265-292. |
| APA | Jiang, Zaixing,Chen, Daizhao,Qiu, Longwei,Liang, Hongbin,&Ma, Jun.(2007).Source-controlled carbonates in a small Eocene half-graben lake basin (Shulu Sag) in central Hebei Province, North China.SEDIMENTOLOGY,54(2),265-292. |
| MLA | Jiang, Zaixing,et al."Source-controlled carbonates in a small Eocene half-graben lake basin (Shulu Sag) in central Hebei Province, North China".SEDIMENTOLOGY 54.2(2007):265-292. |
入库方式： OAI收割
来源：地质与地球物理研究所
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