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首页> 外文期刊>Facies >Larger foraminifera and strontium isotope stratigraphy of middle Campanian shallow-water lagoonal facies of the Pyrenean Basin (NE Spain)
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Larger foraminifera and strontium isotope stratigraphy of middle Campanian shallow-water lagoonal facies of the Pyrenean Basin (NE Spain)

机译：较大的foraminifera和锶同位素的中间南美浅水泻湖各方（Ne Spain）

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摘要

The Upper Cretaceous Terradets Limestone of the south Pyrenean Basin consists of two subunits, named the Lower Terradets and the Upper Terradets. In the Lower Terradets subunit, sedimentological features and fossil content permit distinguishing mid-ramp, bioclastic shoal and inner-ramp lagoonal facies associations, each characterized by a distinctive larger foraminiferal assemblage. Mid-ramp facies contain epibenthic, relatively small foraminifera like Cuneolina cylindrica, Dictyopsella cf. cuvillieri, Pseudocyclammina sphaeroidea, Nummofallotia cretacea, Fallotia ? sp., Pararotalia cf. tuberculifera, Praestorrsella roestae and Praesiderolites praevidali. Bioclastic shoal facies are dominated by Orbitoides cf. tissoti, Praesiderolites douvillei and Pseudosiderolites sp. The inner-ramp lagoonal facies contain a rich and diverse assemblage of epiphytes, like Ilerdorbis decussatus, Dicyclina schlumbergeri and Cyclopsinella roselli n. sp., and epibenthic foraminifera, like Calveziconus lecalvezae and Orbitokathina campaniana. Strontium isotope stratigraphy indicates a middle Campanian age for the Lower Terradets limestone.
机译：南比利日盆地的上白垩纪滴水滴虫由两个亚基组成，名为较低的滴形虫和上部地球。在较低的滴鼻亚基，沉积物特征和化石内容允许中斜坡，生物旋气浅滩和内斜穴位相关联，每个组织具有独特的较大的大胺类组装。中坡道面部含有癫痫素，相对小的foraminifera，如cuneolina cylindrica，dictyopsella cf。 Cuvillieri，伪霉素斯皮哈里奥蒂亚，Nummofallotia齐齐亚，Fallotia？ SP。，Pararotalia CF. Tuberculifera，Praestorrsella Roestae和Praesiderolites praevidali。生物塑料浅层相由胰腺癌占主导地位。 tissoti，praesiderolites douvillei和pseudosiderolites sp。内斜拉柱的泻湖面部含有丰富而多样化的肉切片，如ilerdorbis decussatus，dyyclina schlumbergeri和cyclopsinella roselli n。 sp。和epibenthic foraminifera，如calveziconus lecalvezae和orbitokathina campaniana。 Strontium同位素Stratirtraphy表明下滴漏石灰石的中间南美洲年龄。

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