Orbital chronology of Early Eocene hyperthermals from the Contessa Road section, central Italy
Orbital chronology of Early Eocene hyperthermals from the Contessa Road section, central Italy
复制标题
DOI：
10.1016/j.epsl.2009.12.021
复制
发表时间：
2010-02-15
影响因子：
5.3
通讯作者：
Lourens, Lucas
中科院分区：
文献类型：
--
作者：
Galeotti, Simone;Krishnan, Srinath;Lourens, Lucas
对始新世下部Contessa Road剖面（意大利）的高分辨率地球化学分析揭示了碳酸钙百分浓度（wt.%）的轨道控制波动CaCO 3），包括ETM 2（埃尔莫）和ETM 3（“X”）超热事件。溶解增加，负碳同位素漂移，全球气候变暖的模式是密切相关的最大日射量，通过全球碳循环。wt.%的短偏心率和长偏心率轨道周期的提取CaCO_3记录提供了一个相对的旋回年代学，其时间范围为52 ~ 55.5Ma。Contessa公路段交通便利，并提供了连续的综合地层记录（稳定同位素，标准钙质浮游生物地层，磁性地层和旋回地层），从而为研究早始新世高温提供了潜在的类型继承。(C)2010 Elsevier B. V.保留所有权利。
High-resolution geochemical analyses of the lower Eocene Contessa Road section (Italy) reveal orbitally controlled fluctuations in the percent concentration of calcium carbonate (wt.% CaCO3) that include the ETM2 (Elmo) and ETM3 ("X") hyperthermal events. Patterns of increased dissolution, negative carbon isotope excursions, and warmer global climates are intimately linked to maxima in insolation, through the global carbon cycle. Extraction of short- and long-eccentricity orbital periodicities of the wt.% CaCO3 record provides a relative cyclochronology for the interval ranging from similar to 52 to similar to 55.5 Ma. The Contessa Road section is easily accessible and offers a continuous integrated stratigraphic record (stable isotopes, standard calcareous plankton biostratigraphy, magnetostratigraphy, and cyclostratigraphy), thus providing a potential type succession for the study of Early Eocene hyperthermals. (C) 2010 Elsevier B.V. All rights reserved.