Long-distance correlation between tectonic-controlled, isolated carbonate platforms by cyclostratigraphy and sequence stratigraphy in the Devonian of South China

	Long-distance correlation between tectonic-controlled, isolated carbonate platforms by cyclostratigraphy and sequence stratigraphy in the Devonian of South China
	Chen, DZ ; Tucker, ME ; Jiang, MS ; Zhu, JQ
刊名	SEDIMENTOLOGY
	2001-02-01
卷号	48 期号:1 页码:57-78
关键词	cyclostratigraphy Frasnian Givetian high-frequency cyclicity isolated platforms platform carbonate correlation South China
ISSN号	0037-0746
文献子类	Article
英文摘要	During the early Middle Devonian in South China, an extensive carbonate platform was broken up through extension to create a complex pattern of platforms, and interplatform basins. In Givetian and Frasnian carbonate successions, five depositional facies, including peritidal, restricted shallow subtidal, semi-restricted subtidal, intermediate subtidal and deep subtidal facies, and 18 lithofacies units are recognized from measured sections on three isolated platforms. These deposits are arranged into metre-scale, upward-shallowing peritidal and subtidal cycles. Nine third-order sequences are identified from changes in cycle stacking patterns, vertical facies changes and the stratigraphic distribution of subaerial exposure indicators. These sequences mostly consist of a lower transgressive part and an upper regressive part. Transgressive packages are dominated by thicker-than-average subtidal cycles, and regressive packages by thinner-than-average peritidal cycles. Sequence boundaries are transitional zones composed of stacked, high-frequency, thinner-than-average cycles with upward-increasing intensity of subaerial exposure, rather than individual, laterally traceable surfaces. These sequences can be further grouped into catch-up and keep-up sequence sets from the longterm (second-order) changes in accommodation and vertical facies changes. Catch-up sequences are characterized by relatively thick cycle packages with a high percentage of intermediate to shallow subtidal facies, and even deep subtidal facies locally within some individual sequences, recording long-term accommodation gain. Keep-up sequences are characterized by relatively thin cycle packages with a high percentage of peritidal facies within sequences, recording long-term accommodation loss. Correlation of long-term accommodation changes expressed by Fischer plots reveals that during the late Givetian to early Frasnian increased accommodation loss on platforms coincided with increased accommodation gain in interplatform basins. This suggests that movement on faults resulted in the relative uplift of platforms and subsidence of interplatform basins. In the early Frasnian, extensive siliceous deposits in most interplatform basins and megabreccias at basin margins correspond to exposure disconformities on platforms.
WOS关键词	SHALLOWING-UPWARD SEQUENCES ; EASTERN GREAT-BASIN ; PERITIDAL CARBONATE ; STACKING PATTERNS ; VIRGINIA APPALACHIANS ; LOWER ORDOVICIAN ; FISCHER PLOTS ; FRENCH JURA ; CYCLES ; ACCUMULATION
WOS研究方向	Geology
语种	英语
出版者	BLACKWELL SCIENCE LTD
WOS记录号	WOS:000167708400003
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/76675]
专题	中国科学院地质与地球物理研究所
通讯作者	Chen, DZ
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Durham, Dept Geol Sci, Durham DH1 3LE, England
推荐引用方式 GB/T 7714	Chen, DZ,Tucker, ME,Jiang, MS,et al. Long-distance correlation between tectonic-controlled, isolated carbonate platforms by cyclostratigraphy and sequence stratigraphy in the Devonian of South China[J]. SEDIMENTOLOGY,2001,48(1):57-78.
APA	Chen, DZ,Tucker, ME,Jiang, MS,&Zhu, JQ.(2001).Long-distance correlation between tectonic-controlled, isolated carbonate platforms by cyclostratigraphy and sequence stratigraphy in the Devonian of South China.SEDIMENTOLOGY,48(1),57-78.
MLA	Chen, DZ,et al."Long-distance correlation between tectonic-controlled, isolated carbonate platforms by cyclostratigraphy and sequence stratigraphy in the Devonian of South China".SEDIMENTOLOGY 48.1(2001):57-78.