Abstract The Likva Cove section on the island of Brac (Croatia) represents a rare example within the Adriatic Carbonate Platform (AdCP) succession of the basal Palaeocene limestones overlying the uppermost Maastrichtian shallow-platform limestones with evidence of only a brief stratigraphic hiatus at the Cretaceous/Palaeogene (K/Pg) contact. Detailed study of the 50-m-thick section resulted in the description of eight lithofacies arranged into six lithostratigraphic units: (A) rudist limestones, (B) deposits with coral–stromatoporoid patch reefs, (C) bindstones, and (D) fine-grained limestones with benthic and rare planktonic foraminifera in the uppermost Maastrichtian (comprising microfossil assemblage biozones I and II), and (E) limestones with benthic foraminifera (mostly discorbids), ostracods and rare planktonic foraminifera, and (F) ostracod–discorbid limestones in the lowermost Palaeocene (representing microfossil assemblage biozone III). The K/Pg contact is constrained between the last occurrence of Maastrichtian benthic and rare planktonic foraminifera, and the first occurrence of Danian planktonic and benthic foraminifera. The uppermost Cretaceous bed represents a firmground, but low biostratigraphic resolution precludes defining duration of a probable short-lasting hiatus at the K/Pg contact. Planktonic foraminifera are mixed with benthic forms in a 3.5-m-thick interval comprising the K/Pg contact as a consequence of decreased depositional rate and probable storm influence. Top of the section contains well developed coral patch reefs intensely karstified during a long-lasting regional unconformity, which in the studied part of the AdCP commenced in the early Palaeocene, i.e. later than at most parts of the platform. Therefore, the end of AdCP deposition should be locally extended into the Palaeocene in both its NW and SE parts.

中文翻译：

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白垩纪最上层至古近纪最下层浅海层序的岩石地层学和生物地层学：Likva Cove 剖面（克罗地亚布拉奇岛）的亚得里亚海碳酸盐岩台地顶部

摘要 布拉克岛（克罗地亚）的 Likva Cove 剖面代表了亚得里亚海碳酸盐岩台地 (AdCP) 层序中的一个罕见例子，上面覆盖着最上层的马斯特里赫特浅台灰岩，证据表明白垩纪只有短暂的地层中断。 /古近纪（K/Pg）接触。对 50 米厚剖面的详细研究导致描述了排列成六个岩石地层单元的八个岩相：(A) 粗砂灰岩，(B) 具有珊瑚-层孔状斑块礁的沉积物，(C) 粘结岩，和 (D) 细粒-在最上层马斯特里赫特（包括微化石组合生物区 I 和 II）中含有底栖和稀有浮游有孔虫的粒状石灰岩，以及（E）含有底栖有孔虫（主要是discorbids）、介形虫和稀有浮游有孔虫的石灰岩，(F) 古新世最低层的介形-无色石灰岩（代表微化石组合生物区 III）。马斯特里赫特底栖和稀有浮游有孔虫的最后一次出现与大年浮游和底栖有孔虫的首次出现之间限制了 K/Pg 接触。最上面的白垩纪地层代表了坚硬的地面，但生物地层分辨率低，无法确定 K/Pg 接触处可能的短暂中断的持续时间。由于沉积速率下降和可能的风暴影响，浮游有孔虫在 3.5 米厚的间隔中与底栖形式混合，包括 K/Pg 接触。该部分的顶部包含在长期的区域不整合中强烈岩溶的发育良好的珊瑚斑礁，在 AdCP 的研究部分，它开始于古新世早期，即晚于平台的大多数部分。因此，AdCP 沉积的结束应在其 NW 和 SE 部分局部延伸到古新世。