Journal ArticleDOI
The half-lives of uranium-234 and thorium-230
Hai Cheng,Richard Lawrence Edwards,J.A. Hoff,Christina D. Gallup,David Richards,Yemane Asmerom +5 more
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In this article, the authors used high precision thermal ionization mass spectrometric (TIMS) methods to determine the half-life of zircons with concordant 238 U/ 238 U and 230 Th / 238 U atomic ratios.About:
This article is published in Chemical Geology.The article was published on 2000-08-15. It has received 1171 citations till now.read more
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Holocene forcing of the Indian monsoon recorded in a stalagmite from southern Oman.
Dominik Fleitmann,Stephen J. Burns,Manfred Mudelsee,U. Neff,Jan Kramers,Augusto Mangini,Albert Matter +6 more
TL;DR: A high-resolution oxygen-isotope record from a thorium-uranium–dated stalagmite from southern Oman reflects variations in the amount of monsoon precipitation, indicating that early Holocene monsoon intensity is largely controlled by glacial boundary conditions.
Journal ArticleDOI
Marine04 marine radiocarbon age calibration, 0-26 cal kyr BP
Konrad A Hughen,Michael Baillie,Edouard Bard,J. Warren Beck,Chanda J H Bertrand,Paul G. Blackwell,Caitlin E. Buck,George S. Burr,K. B. Cutler,Paul E. Damon,Richard L Edwards,Richard G. Fairbanks,Michael Friedrich,Thomas P. Guilderson,Thomas P. Guilderson,Bernd Kromer,Gerry McCormac,Sturt W. Manning,Sturt W. Manning,Christopher Bronk Ramsey,Paula J. Reimer,Paula J. Reimer,Ron W Reimer,Sabine Remmele,John Southon,Minze Stuiver,Sahra Talamo,Frederick W. Taylor,Johannes van der Plicht,Constanze E. Weyhenmeyer +29 more
TL;DR: In this paper, a new radiocarbon calibration curve, IntCal04 and Marine04, has been constructed and internationally rati- fied to replace the terrestrial and marine components of IntCal98.
Journal ArticleDOI
Timing, Duration, and Transitions of the Last Interglacial Asian Monsoon
Daoxian Yuan,Hai Cheng,R. Lawrence Edwards,Carolyn A. Dykoski,Megan J. Kelly,Meiliang Zhang,Jiaming Qing,Yushi Lin,Yongjin Wang,Jiangyin Wu,Jeffery A. Dorale,Zhisheng An,Yanjun Cai +12 more
TL;DR: Thorium-230 ages and oxygen isotope ratios of stalagmites from Dongge Cave, China, characterize the Asian Monsoon and low-latitude precipitation over the past 160,000 years, indicating that insolation triggered the final rise to full interglacial conditions.
Journal ArticleDOI
Improvements in 230Th dating, 230Th and 234U half-life values, and U–Th isotopic measurements by multi-collector inductively coupled plasma mass spectrometry
Hai Cheng,Hai Cheng,R. Lawrence Edwards,Chuan-Chou Shen,Victor J. Polyak,Yemane Asmerom,Jon Woodhead,John Hellstrom,Yongjin Wang,Xinggong Kong,Christoph Spötl,Xianfeng Wang,E. Calvin Alexander +12 more
TL;DR: In this paper, the authors used multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) to measure the half-life of stalagmite stalagmites.
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Radiocarbon calibration curve spanning 0 to 50,000 years BP based on paired 230 Th/ 234 U/ 238 U and 14 C dates on pristine corals
Richard G. Fairbanks,Richard G. Fairbanks,Richard A. Mortlock,Tzu-Chien Chiu,Tzu-Chien Chiu,Li Cao,Li Cao,Alexey Kaplan,Thomas P. Guilderson,Thomas P. Guilderson,Todd W. Fairbanks,Arthur L. Bloom,Pieter Meiert Grootes,Marie-Josée Nadeau +13 more
TL;DR: In this article, the authors presented high precision paired 230 Th/ 234 U/ 238 U and 14 C age determinations on pristine coral samples that enable them to extend the radiocarbon calibration curve from 12,000 to 50,000 years before present.
References
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Journal ArticleDOI
Precision Measurement of Half-Lives and Specific Activities of U 235 and U 238
TL;DR: New determinations of the half-lives of half-life values of $ −235 and −238 have been made improved techniques have allowed the halflife values to be measured with greater accuracy than has been heretofore achieved as discussed by the authors.
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Precise U‐Pb ages of Duluth Complex and related mafic intrusions, northeastern Minnesota: Geochronological insights to physical, petrogenetic, paleomagnetic, and tectonomagmatic processes associated with the 1.1 Ga Midcontinent Rift System
James B. Paces,James D. Miller +1 more
TL;DR: In this article, anorthositic and gabbroic intrusives were chosen to represent both the temporal and spatial ranges of plutonic activity that formed the Duluth Complex and related mafic intrusions.
Journal ArticleDOI
Uranium-series disequilibrium: Applications to Earth, Marine, and environmental sciences
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Uranium-series disequilibrium: applications to earth, marine, and environmental sciences. 2. ed
M. Ivanovich,R. S. Harmon +1 more
TL;DR: The phenomenon of radioactivity geochemistry of actinides and their daughters uranium-series desequilibrium applications applications in geochronology chemical procedures spectroscopic methods mass spectrometry and applications to uranium series disequilibrium igneous rocks uranium series mobilization and surface hydrology ground water.
Journal ArticleDOI
U-Th ages obtained by mass spectrometry in corals from Barbados: sea level during the past 130,000 years
TL;DR: In this article, the authors present results bearing on the sea level record for the past 130,000 years; they conclude that the last deglaciation started 3, 000 years earlier than previously thought and confirm that there were two surges in melt water at about 11 kyr and 14 kyr BP (before present).