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Empirical evidence for stability of the 405-kiloyear Jupiter-Venus eccentricity cycle over hundreds of millions of years [Earth, Atmospheric, and Planetary Sciences]
Proceedings of the National Academy of Sciences of the United States of America ( IF 11.1 ) Pub Date : 2018-06-12 , DOI: 10.1073/pnas.1800891115
Dennis V. Kent 1, 2 , Paul E. Olsen 2 , Cornelia Rasmussen 3 , Christopher Lepre 1, 2 , Roland Mundil 4 , Randall B. Irmis 3, 5 , George E. Gehrels 6 , Dominique Giesler 6 , John W. Geissman 7 , William G. Parker 8
Affiliation  

The Newark–Hartford astrochronostratigraphic polarity timescale (APTS) was developed using a theoretically constant 405-kiloyear eccentricity cycle linked to gravitational interactions with Jupiter–Venus as a tuning target and provides a major timing calibration for about 30 million years of Late Triassic and earliest Jurassic time. While the 405-ky cycle is both unimodal and the most metronomic of the major orbital cycles thought to pace Earth’s climate in numerical solutions, there has been little empirical confirmation of that behavior, especially back before the limits of orbital solutions at about 50 million years before present. Moreover, the APTS is anchored only at its younger end by U–Pb zircon dates at 201.6 million years before present and could even be missing a number of 405-ky cycles. To test the validity of the dangling APTS and orbital periodicities, we recovered a diagnostic magnetic polarity sequence in the volcaniclastic-bearing Chinle Formation in a scientific drill core from Petrified Forest National Park (Arizona) that provides an unambiguous correlation to the APTS. New high precision U–Pb detrital zircon dates from the core are indistinguishable from ages predicted by the APTS back to 215 million years before present. The agreement shows that the APTS is continuous and supports a stable 405-kiloyear cycle well beyond theoretical solutions. The validated Newark–Hartford APTS can be used as a robust framework to help differentiate provinciality from global temporal patterns in the ecological rise of early dinosaurs in the Late Triassic, amongst other problems.



中文翻译:

405千年木星-金星偏心周期在数亿年中稳定的经验证据[地球,大气和行星科学]

纽瓦克-哈特福德天文地层极性时标(APTS)是使用理论上恒定的405千米偏心周期开发的,该偏心距周期与以木星-金星为引力目标的引力相互作用相关,并为三叠纪晚期和侏罗纪最早的大约3000万年提供了主要的时间标定。时间。虽然405-ky周期既是单峰周期,又是在数值解法中认为能适应地球气候变化的主要轨道周期中最具节律性的模型,但几乎没有经验证实这种行为,尤其是早在约5000万年的轨道解法之前在此之前。此外,APTS仅在较年轻的时候才被存在的U-Pb锆石日期固定在201.6百万年前,甚至可能缺少405-ky周期。为了测试悬空的APTS和轨道周期的有效性,我们在亚利桑那州石化森林国家公园的科学钻探岩心中,对含火山碎屑的Chinle地层中的磁极序列进行了诊断,该序列与APTS具有明确的相关性。从岩心测得的新的高精度U-Pb碎屑锆石与APTS预测的距今2.15亿年前的年龄没有区别。该协议表明,APTS是连续的,并支持一个稳定的405千年周期,远远超出了理论上的解决方案。经过验证的纽瓦克-哈特福德APTS可以用作一个强大的框架,以帮助在三叠纪晚期恐龙的生态崛起中将省份与全球时间格局区分开来。我们在亚利桑那州石化森林国家公园的科学钻探岩心中,在含火山碎屑的Chinle地层中恢复了诊断性的磁极性序列,该序列与APTS具有明确的相关性。从岩心测得的新的高精度U-Pb碎屑锆石与APTS预测的距今2.15亿年前的年龄没有区别。该协议表明,APTS是连续的,并支持一个稳定的405千年周期,远远超出了理论上的解决方案。经过验证的纽瓦克-哈特福德APTS可以用作一个强大的框架,以帮助在三叠纪晚期恐龙的生态崛起中将省份与全球时间格局区分开来。我们在亚利桑那州石化森林国家公园的科学钻探岩心中,在含火山碎屑的Chinle地层中恢复了诊断性的磁极性序列,该序列与APTS具有明确的相关性。从岩心测得的新的高精度U-Pb碎屑锆石与APTS预测的距今2.15亿年前的年龄没有区别。该协议表明,APTS是连续的,并支持一个稳定的405千年周期,远远超出了理论上的解决方案。经过验证的纽瓦克-哈特福德APTS可以用作一个强大的框架,以帮助在三叠纪晚期恐龙的生态崛起中将省份与全球时间格局区分开来。

更新日期:2018-06-13
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