GSTDTAP  > 地球科学
DOI10.1130/B32050.1
A 9 million-year-long astrochronological record of the early-middle Eocene corroborated by seafloor spreading rates
Francescone, Federica1; Lauretano, Vittoria2; Bouligand, Claire3,4; Moretti, Matteo1; Sabatino, Nadia5; Schrader, Cindy6; Catanzariti, Rita7; Hilgen, Frits6; Lanci, Luca1; Turtu, Antonio8; Sprovieri, Mario5; Lourens, Lucas6; Galeotti, Simone1
2019-03-01
发表期刊GEOLOGICAL SOCIETY OF AMERICA BULLETIN
ISSN0016-7606
EISSN1943-2674
出版年2019
卷号131页码:499-520
文章类型Article
语种英语
国家Italy; England; France; Netherlands
英文摘要

The early-middle Eocene (ca. 56-41 Ma) is recorded in the pelagic Scaglia Rossa and Variegata Formations of the Umbria-Marche Basin (central Italy). Geochemical and magnetostratigraphic alignment between the Bottaccione section (Gubbio, central Italy) and the Smirra core (Cagli, central Italy) allows us to generate a continuous and well-preserved new record that, combined with previously published data from the same area, creates a continuous high-resolution record from the Paleocene-Eocene thermal maximum (ca. 56 Ma) to the lower part of chron C21n. Comparison with carbon isotope records from Ocean Drilling Program Sites 1258 and 1263 reveals a satisfactory match, providing further evidence of the global significance of the long-term trend and superposed perturbations captured by the delta C-13 records. The identification of astronomically forced geochemical cycles allows us to develop a 405 k.y. tuned age model, thereby extending the astrochronology from ca. 56.0 to ca. 47.5 Ma. Marine magnetic anomaly profiles from major oceanic basins characterized by high seafloor spreading rates were used to independently test the astronomical polarity time scale associated with our tuning, as well as other polarity time scales. Our age model suggests the existence of periods of relatively constant seafloor spreading rates separated by rapid changes, while the other time scales generate more gradual variations and also include large and short-term deviations in spreading rates that occur simultaneously in different oceanic basins, implying errors in polarity reversal ages. The Umbria-Marche age model further contributes to the closure of the middle Eocene gap in the astronomical time scale.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000460031700009
WOS关键词PALEOGENE PLATE MOTIONS ; SEAWATER CHEMISTRY DRIVEN ; CONTESSA ROAD SECTION ; MAGNETIC STRATIGRAPHY ; LATE PALEOCENE ; ASTRONOMICAL CALIBRATION ; BOTTACCIONE SECTION ; POLARITY TIMESCALE ; CARBON RELEASE ; TIME-SCALE
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/24740
专题地球科学
作者单位1.Univ Urbino, Dipartimento Sci Pure & Appl, Campus Sci E Mattei, I-61029 Urbino, Italy;
2.Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England;
3.Univ Grenoble Alpes, Univ Savoie Mt Blanc, Inst Francais Sci & Technol Transports IFSTTAR, CNRS, F-38000 Grenoble, France;
4.Inst Sci Terre ISTerre, F-38000 Grenoble, France;
5.CNR, IAMC, Via Mare 3, I-91021 Campobello Di Mazara, TP, Italy;
6.Univ Utrecht, Fac Geosci, Dept Earth Sci, Heidelberglaan 2, NL-3584 CS Utrecht, Netherlands;
7.CNR, Ist Geosci & Georisorse, Via G Moruzzi 1, I-56124 Pisa, Italy;
8.Vrije Univ, Dept Earth & Life Sci, De Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands
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GB/T 7714
Francescone, Federica,Lauretano, Vittoria,Bouligand, Claire,et al. A 9 million-year-long astrochronological record of the early-middle Eocene corroborated by seafloor spreading rates[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2019,131:499-520.
APA Francescone, Federica.,Lauretano, Vittoria.,Bouligand, Claire.,Moretti, Matteo.,Sabatino, Nadia.,...&Galeotti, Simone.(2019).A 9 million-year-long astrochronological record of the early-middle Eocene corroborated by seafloor spreading rates.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,131,499-520.
MLA Francescone, Federica,et al."A 9 million-year-long astrochronological record of the early-middle Eocene corroborated by seafloor spreading rates".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 131(2019):499-520.
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