Dinoflagellate cyst assemblages across the Oxfordian/Kimmeridgian boundary (Upper Jurassic) at Flodigarry, Staffin Bay, Isle of Skye, Scotland – a proposed GSSP for the base of the Kimmeridgian
Dinoflagellate cyst assemblages across the Oxfordian/Kimmeridgian boundary (Upper Jurassic) at Flodigarry, Staffin Bay, Isle of Skye, Scotland – a proposed GSSP for the base of the Kimmeridgian
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苏格兰斯凯岛斯塔芬湾弗洛迪加里跨越牛津/启默里阶边界（上侏罗统）的甲藻包囊组合——拟议的启默里阶底部 GSSP
作者：
M. Barski
在苏格兰北部斯凯岛斯塔芬湾的Flodigarry剖面中，对牛津/基默里德分界线上的七个菊石校准的孢粉样品进行了检查，发现了与以前的贡献大致一致的甲藻孢子组合。Emetrocysta sarjeantii、Perisseiasphaeridium pannosum和Senoniasphaera Jurassica的稀有分布略高于拟议的Oxfordian/Kimumid界线，可用作Kimimiddian底部的孢粉学近似。在牛津/基默吉亚边界线以上的两个样本中发现了类似于现代合叶绿藻的高丰度测试，这可能与富营养化加剧有关，也可能与“绿潮”有关。这次水华被认为是Flodigarry段边界的孢粉花卉事件。根据以前的研究，各种富营养化事件可能在亚北方欧洲具有关联潜力。
Examination of seven ammonite-calibrated palynological samples across the Oxfordian/Kimmeridgian boundary in the Flodigarry sections at Staffin Bay, Isle of Skye, northern Scotland, has revealed dinoflagellate cyst assemblages in general terms in line with previous contributions. The sparse occurrence of Emmetrocysta sarjeantii, Perisseiasphaeridium pannosum and Senoniasphaera jurassica slightly above the proposed Oxfordian/Kimmeridgian boundary may be used as a palynological approximation of the base of the Kimmeridgian. The high abundance of tests resembling modern zygnemataceous chlorophycean alga Spirogyra in two samples above the Oxfordian/Kimmeridgian boundary horizon is probably associated with increased eutrophication and possible association with ‟green tides”. This bloom is proposed as a palynofloral proxy event for the boundary in the Flodigarry section. According to previous studies, various eutrophication events may have a correlation potential in Subboreal Europe.