Orbital cyclostratigraphy of the Devonian Frasnian-Famennian transition in South China

	Orbital cyclostratigraphy of the Devonian Frasnian-Famennian transition in South China
	Gong, YM ; Li, BH ; Wang, CY ; Wu, Y
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2001-04-15
卷号	168 期号:3-4 页码:237-248
关键词	orbital forcing Milankovitch cycle cyclostratigraphy numerical dating late Devonian South China
ISSN号	0031-0182
文献子类	Article
英文摘要	Superbundlesets, bundlesets, bundles and laminae were formed in the carbonate successions of the Devonian Frasnian-Famennian transition in Guangxi, South China. Their hierarchical structures, ratio relationships and arrangement order within conodont zones are lasting and stable in the stratigraphical sequences, and can be traced across the different facies belts and sedimentary basins. The hierarchically organized superbundlesets, bundlesets, bundles and laminae correspond to a long eccentricity, eccentricity, obliquity and precession and sub-Milankovitch cyclothem, respectively. The ratio of long eccentricity to eccentricity is 1:4 below the boundary between Frasnian-Famennian and 1:3 above the boundary between Frasnian-Famennian. eccentricity to obliquity is 1:3, and eccentricity to precession is 1:6 in the Devonian. Since the eccentricity periodicity of 100,000 years remains essentially steady through geological time, the periodicity of the long eccentricity, obliquity, precession and sub-Milankovitch cycle was 400,000, 33,333, 16,667 and 8000 or 17,000 years. These ratios are different from those of the Permian, Cretaceous and Quaternary, and coincide well with those calculated theoretically by Berger et al. Science, 255 (1992) 560. This reinforces the hypothesis of the slowing of the earth's rotation and the lengthening of precession and obliquity periods since at least the Devonian time. On the basis of the hierarchical Milankovitch cyclothems, the chronostratigraphical subdivision and correlation of the Frasnian-Famennian transition can be made at the resolution of 100,000s and 10,000s of years. The duration of the upper rhenana Zone, linguiformis Zone, and lower, middle and upper triangularis Zone is 0.6, 0.8, 0.3, 0.3 and 0.3 Ma, respectively. (C) 2001 Elsevier Science B.V. All rights reserved.
WOS关键词	BOUNDARY ; IMPACT ; SCALE ; TIME ; AGES
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000168397500003
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/77249]
专题	中国科学院地质与地球物理研究所
通讯作者	Gong, YM
作者单位	1.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China 2.Acad Sinica, Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 3.Guangxi Inst Geol, Nanning 530023, Peoples R China
推荐引用方式 GB/T 7714	Gong, YM,Li, BH,Wang, CY,et al. Orbital cyclostratigraphy of the Devonian Frasnian-Famennian transition in South China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2001,168(3-4):237-248.
APA	Gong, YM,Li, BH,Wang, CY,&Wu, Y.(2001).Orbital cyclostratigraphy of the Devonian Frasnian-Famennian transition in South China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,168(3-4),237-248.
MLA	Gong, YM,et al."Orbital cyclostratigraphy of the Devonian Frasnian-Famennian transition in South China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 168.3-4(2001):237-248.