Radiolarian evidence for Middle Bathonian radiolarites in the Episkopi Formation (Ayios Photios Group, Mamonia Complex, SW Cyprus).

IF 0.7 Q4 PALEONTOLOGY REVUE DE MICROPALEONTOLOGIE Pub Date : 2021-12-01 DOI:10.1016/j.revmic.2021.100549

Antriani Varnava , Taniel Danelian , Sylvie Regnier , Léa Devaere

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引用次数: 1

Abstract

The Ayios Photios Group in SW Cyprus represents a deep-water slope or base of slope sequence that was accumulated on a Mesozoic margin of the Mediterranean Tethys. The Episkopi Formation is an essentially radiolaritic sequence, the age of which was previously considered to range between the Callovian and the Valanginian. A moderately well preserved (PI 4-5) radiolarian assemblage was extracted after laboratory leaching with diluted hydrofluoric acid of a radiolarian chert bed south of the village of Episkopi. Based on the co-occurrence of Bernoullius rectispinus leporinus Conti & Marcucci, Hexasaturnalis tetraspinus (Yao) and Theocapsommella cucurbiformis (Baumgartner), the assemblage is correlated with the Middle Bathonian (Unitary Association Zone 6). Our results extend downwards the known age range of radiolarites of the Episkopi formation and reduce the previously known range of depositional hiatus with the underlying Upper Triassic formations of the Ayios Photios Group.

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塞浦路斯西南部Mamonia杂岩Ayios Photios群Episkopi组中Bathonian放射虫的放射虫证据。

塞浦路斯西南部的Ayios Photios群代表了沉积在地中海特提斯中生代边缘的深水斜坡或斜坡序列的基底。Episkopi组本质上是一个放射虫层序，其年龄以前被认为介于Callovian和Valanginian之间。用稀释的氢氟酸对Episkopi村南部的放射虫燧石床进行实验室浸出后，提取了保存较好的放射虫(PI 4-5)组合。基于白螺旋体(Bernoullius)的共现;Marcucci, Hexasaturnalis tetraspinus (Yao)和Theocapsommella cucurbiformis (Baumgartner)，这些组合与中Bathonian(单一联合带6)相关。我们的研究结果向下扩展了Episkopi组放射石的已知年龄范围，并缩小了之前已知的与下伏的上三叠统Ayios Photios组沉积间隙的范围。

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REVUE DE MICROPALEONTOLOGIE PALEONTOLOGY-

CiteScore

2.50

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0.00%

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期刊介绍： La Revue de micropaléontologie publie 4 fois par an des articles de intérêt international, consacrés à tous les aspects de la micropaléontologie. Les textes, en anglais ou en français, sont des articles originaux, des résultats de recherche, des synthèses et mises au point, des comptes rendus de réunions scientifiques et des analyses de ouvrages. La revue se veut résolument ouverte à tous les aspects de la micropaléontologie en accueillant des travaux traitant de la systématique des microfossiles (et de leurs équivalents actuels), des bactéries aux microrestes de vertébrés, et de toutes leurs applications en sciences biologiques et géologiques.