Upper Tithonian-Valanginian (Upper Jurassic-Lower Cretaceous) dinoflagellate cyst stratigraphy of the western Mediterranean☆
Upper Tithonian-Valanginian (Upper Jurassic-Lower Cretaceous) dinoflagellate cyst stratigraphy of the western Mediterranean☆
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地中海西部上提松阶-凡兰吉阶（上侏罗统-下白垩统）甲藻包囊地层☆
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发表时间：
1997
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通讯作者：
H. Leereveld
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作者：
H. Leereveld
摘要本研究重点研究了西地中海上泰桑-瓦兰吉尼亚岩石中甲藻孢囊的定性分布。本文介绍了西班牙东南部卡拉瓦卡附近菊石控制的远洋里约-阿尔戈斯序列的研究结果，这些结果与法国东南部和瑞士校准剖面的信息相结合。菊石框架可以确定三个地区同时出现的第一次和最后一次出现的甲藻孢囊分类群。主要基于这些生物地层学事件，在西地中海的上泰桑-瓦兰吉尼亚序列中定义和识别了四个连续的甲藻孢囊带。建立的分区具有在世界范围内应用的潜力。此外，高分辨率分区被描述为一套分区，其依据是仅在里奥阿尔戈斯序列中上贝里亚西亚-瓦兰吉尼亚的甲藻孢囊发育的七次连续转移。这些局部古生态变化被认为反映了区域、区域间或全球性质的古环境和/或气候变化。
Abstract This study focuses on the qualitative dinoflagellate cyst distribution in the Upper Tithonian-Valanginian rocks of the western Mediterranean. Results are presented of research on the ammonite controlled pelagic Rio Argos succession near Caravaca (SE Spain) which are integrated with information from calibrated sections in southeast France and Switzerland. The ammonite framework permitted determination of contemporaneous first and last occurrences of dinoflagellate cyst taxa in the three areas. Mainly based on these biostratigraphic events, four successive dinoflagellate cyst zones are defined and identified in the Upper Tithonian-Valanginian succession of the western Mediterranean. The established zonation has potential for world-wide application. In addition, a high-resolution zonation, described as a suite of subzones, is established based on seven successive shifts in the dinoflagellate cyst development of the Upper Berriasian-Valanginian in the Rio Argos succession exclusively. These local palaeoecological changes are considered to reflect palaeoenvironmental and/or climatic changes of a regional, interregional or global nature.