塞浦路斯西南部马莫尼亚杂岩下侏罗纪火山碎屑角砾岩和燧石区块的放射虫时代和岩相组成

IF 1.1 4区地球科学 Q3 GEOLOGY

Geologia Croatica Pub Date : 2022-02-28 DOI:10.4154/gc.2022.07

N. Bragin, G. Ledneva, L. Bragina, E. Tsiolakis, V. Symeou, N. Papadimitriou

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引用次数: 2

摘要

研究了一次火山碎屑角砾岩的异常暴露，该角砾岩夹放射虫燧石和石灰岩，构成了塞浦路斯西南部阿卡玛斯半岛上白垩纪Mamonia Mélange内的一个独特区块。该角砾岩代表了上三叠统Phasoula组火山岩沉积盖层的下部。角砾岩主要由变玄武岩、辉绿岩、变辉长岩、透明质碎屑岩和石英钠长石-绿泥石-绿帘石集合体的碎屑组成，这些碎屑已在绿片岩相变质，以及次级粉砂岩。夹在角砾岩层之间的薄层燧石产生了放射虫组合，表明该层序的时代为早侏罗世（Sinemurian至Pliensbachian）。

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The radiolarian age and petrographic composition of a block of the Lower Jurassic volcaniclastic breccia and chert of the Mamonia Complex, SW Cyprus

An exceptional exposure of volcaniclastic breccia intercalated with radiolarian cherts and limestones was studied which constitutes a unique block within the Upper Cretaceous Mamonia Mélange in the Akamas Peninsula of southwestern Cyprus. This breccia, represents the lower part of the sedimentary cover of the Upper Triassic Phasoula Formation volcanics. The breccia mainly consists of clasts of metabasalts, diabases, metagabbros, hyaloclastites and quartz-albite-chlorite-epidote aggregates, which have been metamorphosed at greenschist facies, and subordinate siltstones. The thin-bedded cherts intercalated between breccia levels, yielded radiolarian assemblages, which indicate an Early Jurassic age (Sinemurian to Pliensbachian) for the sequence.

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来源期刊

Geologia Croatica GEOSCIENCES, MULTIDISCIPLINARY-

CiteScore

2.90

自引率

23.10%

发文量

审稿时长

>12 weeks

期刊介绍： Geologia Croatica welcomes original scientific papers dealing with diverse aspects of geology and geological engineering, the history of the Earth, and the physical changes that the Earth has undergone or it is undergoing. The Journal covers a wide spectrum of geology disciplines (palaeontology, stratigraphy, mineralogy, sedimentology, petrology, geochemistry, structural geology, karstology, hydrogeology and engineering geology) including pedogenesis, petroleum geology and environmental geology. Papers especially concerning the Pannonian Basin, Dinarides, the Adriatic/Mediterranean region, as well as notes and reviews interesting to a wider audience (e.g. review papers, book reviews, and notes) are welcome.