globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.01.043
论文题名:
Multistratigraphic records of the Lower Cretaceous (Valanginian-Cenomanian) Puez key area in N. Italy
作者: Lukeneder A.; Soták J.; Jovane L.; Giorgioni M.; Savian J.F.; Halásová E.; Rehákova D.; Józsa Š.; Kroh A.; Florindo F.; Sprovieri M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 447
起始页码: 65
结束页码: 87
语种: 英语
英文关键词: Dolomites ; Paleoclimatology ; Paleotemperature ; Southern Alps ; Tethys
英文摘要: We present a stratigraphic investigation of a Hauterivian to Cenomanian hemipelagic succession from Col Puez, in the Dolomites (Southern Alps, northern Italy). A composite section of seven segments was studied with bio-, magneto-, and chemostratigraphy, which enabled detailed and robust age calibration of the Puez succession. It also revealed the paleoceanographic history and helped identify the important global climatic events of that period. The age of the Lower Cretaceous Puez Formation in the Dolomites is refined as late Hauterivian to early Cenomanian. Ammonoids provide a detailed biostratigraphic subdivision that forms the basis for analyses of the faunal distribution and the paleoenvironmental evolution of basins and plateaus across the Tethys. The succession consists of facies similar to those of coeval units in the Tethys, apart from the late Barremian to late Aptian interval, which is marked by a major hiatus followed by a few-meters-thick redbed of late Aptian age. The Lower Cretaceous was characterized by a weak (~1‰) positive δ13C trend, punctuated by a positive shift in the late Hauterivian corresponding to the Faraoni Level. Oxygen isotope values show a decreasing trend from the Hauterivian to the Albian/Cenomanian, which mirrors a long-term increasing trend in paleotemperatures from ~15-18 °C to ~25-30 °C. This is in agreement with global paleotemperature reconstructions for this period representing the onset of mid-Cretaceous super-greenhouse conditions. Nonetheless, no black shale occurs at the intervals equivalent to Aptian-Albian oceanic anoxic events (OAE), suggesting unique paleoceanographic conditions (enhanced current activity on a submarine height) on the Trento Plateau area during the mid-Cretaceous. © 2016 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/68538
Appears in Collections:过去全球变化的重建

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作者单位: Geological and Palaeontological Department, Natural History Museum Vienna, Burgring 7, Vienna, Austria; Earth Science Institute, Slovak Academy of Science, Ďumbierska 1, Banská Bystrica, Slovakia; Department of Geography, Faculty of Education, Catholic University, Hrabovská cesta 1, Ružomberok, Slovakia; Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo, SP, Brazil; Departamento de Geologia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, Brazil; Comenius University, Faculty of Natural Sciences, Department of Geology and Palaeontology, Mlynská dolina, Ilkovicova 6, Bratislava, Slovakia; Istituto Nazionale di Geofisica e Vulcanologia (INGV), Via di Vigna Murata 605, Rome, Italy; Università di Palermo, Dipartimento di Geologia e Geodesia, Via Archirafi 22, Palermo, Italy; Geological Institute, ETH Zurich, Sonneggstrasse 5, Zurich, Switzerland

Recommended Citation:
Lukeneder A.,Soták J.,Jovane L.,et al. Multistratigraphic records of the Lower Cretaceous (Valanginian-Cenomanian) Puez key area in N. Italy[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,447
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