PDF(Pubmed)
Abstract：
Marine conservation deposits (\'Konservat-Lagerstätten\') are characterized by their mode of fossil preservation, faunal composition and sedimentary facies. Here, we review these characteristics with respect to the famous conservation deposit of the Besano Formation (formerly Grenzbitumenzone; including the Anisian-Ladinian boundary), and the successively younger fossil-bearing units Cava inferiore, Cava superiore, Cassina beds and the Kalkschieferzone of Monte San Giorgio (Switzerland and Italy). We compare these units to a selection of important black shale-type Lagerstätten of the global Phanerozoic plus the Ediacaran in order to detect commonalities in their facies, genesis, and fossil content using principal component and hierarchical cluster analyses. Further, we put the Monte San Giorgio type Fossillagerstätten into the context of other comparable Triassic deposits worldwide based on their fossil content. The results of the principal component and cluster analyses allow a subdivision of the 45 analysed Lagerstätten into four groups, for which we suggest the use of the corresponding pioneering localities: Burgess type for the early Palaeozoic black shales, Monte San Giorgio type for the Triassic black shales, Holzmaden type for the pyrite-rich black shales and Solnhofen type for platy limestones.
摘要：
海洋保护沉积物（\'Konservat-Lagerstätten\'）的特征在于其化石保存方式，动物区系组成和沉积相。这里,我们回顾了贝萨诺组（以前是Grenzbitumenzone；包括Anisian-Ladinian边界）的著名保护矿床的这些特征，和相继年轻的化石携带单位卡瓦地狱，卡瓦上级，卡西纳床和蒙特圣乔治（瑞士和意大利）的Kalkschieferzone。我们将这些单位与全球显生代和Ediacaran的重要黑色页岩型Lagerstätten进行了比较，以检测其相的共性，创世纪，和化石含量使用主成分和层次聚类分析。Further,根据化石含量，我们将MonteSanGiorgio型Fossillagerstätten置于全球其他类似的三叠纪矿床的背景下。主成分和聚类分析的结果允许将45个分析的Lagerstätten细分为四组，为此，我们建议使用相应的先驱地区：早期古生代黑色页岩的伯吉斯类型，MonteSanGiorgio类型为三叠纪黑色页岩，Holzmaden型为富含黄铁矿的黑页岩，Solnhofen型为片状石灰岩。
