The Ar-40/Ar-39 dating of the early Jehol Biota from Fengning, Hebei Province, northern China

IVPP-IR > 中科院古脊椎所（2000年以后）

	The Ar-40/Ar-39 dating of the early Jehol Biota from Fengning, Hebei Province, northern China
	He, HY ; Wang, XL; Jin, F ; Zhou, ZH; Wang, F ; Yang, LK ; Ding, X ; Boven, A ; Zhu, RX ; He, HY (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Lab Paleomagnetism & Geochronol SKL LE, Beijing 100029, Peoples R China.
	2006-04-12
发表期刊	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
ISSN	1525-2027
卷号	7 页码:—
文章类型	Article
摘要	The bird fossil-bearing deposits at the Jiecaigou section, correlative to the Dabeigou Formation, in Fengning, Hebei Province, northern China, is well known for yielding a fossil assemblage representing the earliest evolutionary stage of the Jehol Biota. The precise age of the fossil-bearing deposits, however, is unknown. The Ar-40/Ar-39 age spectrum obtained on bulk K-feldspars from the tuff layer about 2 m below the bird fossil-bearing layer gave a plateau age of 129.0 +/- 1.3 Ma (2 sigma, full external error) and an isochron age of 132.3 +/- 4.5 Ma (2 sigma, full external error). Seventeen total-fusion Ar-40/Ar-39 ages on K-feldspars from the interbedded tuff about 6 m below the fossil-bearing layer resulted in a weighted mean of 130.7 +/- 1.4 Ma (2 sigma, full external error). These dates suggest an age of similar to 131 Ma for the early Jehol Biota and combined with previous dating indicate that this biota lasted at least from 131 Ma to 120 Ma (Late Hauterivian to Aptian). These dates also represent the earliest absolute age for known enantiornithine birds in the world.; The bird fossil-bearing deposits at the Jiecaigou section, correlative to the Dabeigou Formation, in Fengning, Hebei Province, northern China, is well known for yielding a fossil assemblage representing the earliest evolutionary stage of the Jehol Biota. The precise age of the fossil-bearing deposits, however, is unknown. The Ar-40/Ar-39 age spectrum obtained on bulk K-feldspars from the tuff layer about 2 m below the bird fossil-bearing layer gave a plateau age of 129.0 +/- 1.3 Ma (2 sigma, full external error) and an isochron age of 132.3 +/- 4.5 Ma (2 sigma, full external error). Seventeen total-fusion Ar-40/Ar-39 ages on K-feldspars from the interbedded tuff about 6 m below the fossil-bearing layer resulted in a weighted mean of 130.7 +/- 1.4 Ma (2 sigma, full external error). These dates suggest an age of similar to 131 Ma for the early Jehol Biota and combined with previous dating indicate that this biota lasted at least from 131 Ma to 120 Ma (Late Hauterivian to Aptian). These dates also represent the earliest absolute age for known enantiornithine birds in the world.
关键词	Dabeigou Formation Jehol Biota Ar-40/ar-39 Dating Hebei Northern China Geochronology : Radioisotope Geochronology Geographic Location : Asia Information Related To Geologic Time : Cretaceous
WOS标题词	Science & Technology ; Physical Sciences
URL	查看原文
关键词[WOS]	EARLY EVOLUTION ; CRETACEOUS AGE ; DINOSAUR ; YIXIAN ; ORIGIN ; BIRDS
收录类别	SCI
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000237280200005
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/3455
专题	中科院古脊椎所（2000年以后）古低等脊椎动物研究室
通讯作者	He, HY (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Lab Paleomagnetism & Geochronol SKL LE, Beijing 100029, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Lab Paleomagnetism & Geochronol SKL LE, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 3.Chinese Univ Geosci, Marine Sch, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	He, HY,Wang, XL,Jin, F,et al. The Ar-40/Ar-39 dating of the early Jehol Biota from Fengning, Hebei Province, northern China[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2006,7:—.
APA	He, HY.,Wang, XL.,Jin, F.,Zhou, ZH.,Wang, F.,...&He, HY .(2006).The Ar-40/Ar-39 dating of the early Jehol Biota from Fengning, Hebei Province, northern China.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,7,—.
MLA	He, HY,et al."The Ar-40/Ar-39 dating of the early Jehol Biota from Fengning, Hebei Province, northern China".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 7(2006):—.

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