期刊
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
卷 430, 期 -, 页码 118-131出版社
ELSEVIER
DOI: 10.1016/j.palaeo.2015.03.020
关键词
Paleoclimate; Carboniferous; Permian; Paleosols; Lodeve Basin
资金
- National Science Foundation [NSF EAR0545654]
- Geological Society of America
- University of California, Davis
- Southern Methodist University
- Russian Government Program of Competitive Growth of Kazan Federal University
- Directorate For Geosciences [1024737] Funding Source: National Science Foundation
- Division Of Earth Sciences [1024737] Funding Source: National Science Foundation
Paleosols preserved within the Carboniferous-Permian succession of the Lodeve Basin, Massif Central, France change stratigraphically from Histosols to calcic Vertisols and Calcisols to gypsic Vertisols and ultimately back to calcic Vertisols and Calcisols. New high-precision U-Pb zircon ages (CA-IDTIMS) for tuff beds within the Lodeve and adjacent Graissessac basins significantly revise the chronostratigraphy of these and correlated Permian terrestrial basins of eastern Euramerica. Under the newly revised chronostratigraphy presented here these stratigraphic changes in morphology indicate a substantial drying of paleoenvironments across the Carboniferous-Permian boundary with a trend toward progressively more arid and seasonal climates through most of the early Permian. This newly-realized chronology provides a paleoenvironmental and paleoclimatic timeline for eastern tropical Pangea that is contemporaneous with similar records in western Pangea and suggests pan-tropical, progressive climate change toward aridity and seasonality occurred from the Late Carboniferous through early Permian. (C) 2015 Elsevier B.V. All rights reserved.
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