globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116376
论文题名:
Stable isotope evidence for rapid uplift of the central Apennines since the late Pliocene
作者: San Jose M.; Caves Rugenstein J.K.; Cosentino D.; Faccenna C.; Fellin M.G.; Ghinassi M.; Martini I.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 544
语种: 英语
中文关键词: authigenic carbonates ; central Apennines ; stable isotope paleoaltimetry ; subduction zone orogeny ; surface uplift
英文关键词: Faulting ; Isotopes ; Sea level ; Surface waters ; Accretionary wedge ; Central Apennines ; Geodynamic process ; Normal faulting ; Slab break-off ; Slab detachment ; Stable isotopes ; Stable oxygen isotopes ; Topography ; accretionary prism ; altimetry ; carbonate rock ; mantle structure ; orography ; oxygen isotope ; Pliocene ; spatiotemporal analysis ; stable isotope ; uplift ; Apennines ; Italy
英文摘要: The central Apennines, an accretionary wedge overlying an area of slab detachment, are characterized by prominent topography, active normal faulting, and high uplift rates. However, previous studies have failed to resolve the surface uplift history, complicating efforts to link the topographic evolution with underlying geodynamic processes. We aim to better quantify orographic changes by using stable oxygen isotope paleoaltimetry. Modern surface water δ18O are 5‰ lower at high elevation than at sea level, reflecting orographic rainout over the Apennines. We present 262 new lacustrine and paleosol carbonate δ18O measurements collected from ten extensional intermontane basins—spanning both high and low elevations—and combine these with 1,166 published δ18O data, permitting us to constrain changes in δ18O both spatially and temporally. Since the Pliocene, δ18O in present-day high-elevation basins has continuously decreased, even as δ18O in lowland basins has remained constant over time. We attribute this continuous 5‰ shift to increased orographic rainout as the central Apennines were uplifted. We estimate an increase in mean elevation of approximately 1–2 km since the late Pliocene, and these estimates match the suggested timing and expected amplitude of slab break-off related uplift. This supports the hypothesis that the opening of the Adriatic slab window and associated mantle flow contributed significantly to building topography in the central Apennines. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165253
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作者单位: Dipartimento di Scienze, Università degli Studi Roma Tre, Largo S. L. Murialdo, 1, Roma, 00146, Italy; Department of Earth Sciences, ETH Zürich, Sonneggstrasse 5, Zürich, 8092, Switzerland; Max Planck Institute for Meteorology, Bundesstraße 53, Hamburg, 20146, Germany; Senckenberg Biodiversity and Climate Research Center, Senckenberganlage 25, Frankfurt, 60325, Germany; Jackson School of Geosciences, University of Texas at Austin, United States; Università di Padova, Dip. di Geoscienze, via G. Gradenigo, 6, Padova, 35131, Italy; Department of Physical Sciences, Earth and Environment, University of Siena, Via Laterina 8, Siena, 53100, Italy

Recommended Citation:
San Jose M.,Caves Rugenstein J.K.,Cosentino D.,et al. Stable isotope evidence for rapid uplift of the central Apennines since the late Pliocene[J]. Earth and Planetary Science Letters,2020-01-01,544
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