DOI: 10.1306/06041413129
Scopus记录号: 2-s2.0-84922619382
论文题名: Sequence stratigraphy and paleogeography of the Middle Jurassic coal measures in the Yuqia coalfield, northern Qaidam Basin, northwestern China
作者: Li M. ; Shao L. ; Lu J. ; Spiro B. ; Wen H. ; Li Y.
刊名: AAPG Bulletin
ISSN: 0149-1586
EISSN: 1558-9316
出版年: 2014
发表日期: 2014
卷: 98, 期: 12 起始页码: 2531
结束页码: 2550
语种: 英语
Scopus关键词: Coal
; Lakes
; Lithology
; Stratigraphy
; Coal accumulation
; Highstand systems tract
; Lithological parameters
; Northern Qaidam Basin
; Northwestern China
; Sedimentological analysis
; Sequence stratigraphy
; Third-order sequences
; Coal deposits
; borehole
; coal
; exploration
; geoaccumulation
; Jurassic
; lithology
; numerical model
; paleogeography
; parameterization
; sequence stratigraphy
; China
; Qaidam Basin
; Qinghai
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Detailed stratigraphic and paleogeographic analyses of data from 72 boreholes for the Middle Jurassic intermontane fluvial-lacustrine coal-bearing sequences were conducted in the Yuqia coalfield of the northern Qaidam Basin, northwestern China. Three third-order sequences lasting in total ca. 10.6 m.y., and an internal lowstand systems tract (LST), trans-gressive systems tract (TST), highstand systems tract (HST), and falling-stage systems tract (FSST) have been identified. A series of sequence-specific paleogeographic maps have been constructed based on the contours of lithological parameters. The paleogeographic units include alluvial fan-braided (meandering) fluvial plain, upper delta plain, lower delta plain, subaqueous delta, shore-shallow lake, and deep lake. The preferred sites of coal accumulation are interdelta bays, upper delta plains, lower delta plains, and fluvial back swamps. The sequence stratigraphic and sedimentological analysis of the Middle Jurassic coal-bearing measures of the Yuqia coalfield provides a basis for a comprehensive coal accumulation model that involves a six-period evolution from the LST, early TST, late TST, early HST, late HST to FSST. The major coal seams were accumulated in the early and late TST of the sequences S1 and S2. These results are of practical significance for coal resources exploration and enhance geological effects of prospecting engineering in the northern Qaidam Basin. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922619382&doi=10.1306%2f06041413129&partnerID=40&md5=9f581dd32a10cfbd7cdf3b0fcae56b44
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13157
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Li M.,Shao L.,Lu J.,et al. Sequence stratigraphy and paleogeography of the Middle Jurassic coal measures in the Yuqia coalfield, northern Qaidam Basin, northwestern China[J]. AAPG Bulletin,2014-01-01,98(12)