Darriwilian (Middle Ordovician) graptolites from Sierra de Lina and Cauchari, Argentine Puna

IF 1.4 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY Geological Journal Pub Date : 2024-04-21 DOI:10.1002/gj.4960

E. Kristal Rueda, Gladys Ortega, Guillermo L. Albanesi, C. Rubén Monaldi, Fernando E. Lopez

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Abstract

This contribution reports two graptolite assemblages from the Puna Turbidite Complex, outcropping in Sierra de Lina and Cauchari locality, western Puna, Jujuy and Salta provinces, Argentina. In Sierra de Lina, the graptolite assemblage comprises Didymograptus sp., Glossograptus fimbriatus, Cryptograptus schaeferi, Archiclimacograptus sp., Pseudamplexograptus distichus, Pseudamplexograptus latus, ?Urbanekograptus retioloides and Hustedograptus sp. The graptolite fauna collected from Cauchari locality includes Didymograptus spp., Archiclimacograptus caelatus, Archiclimacograptus sp. cf. A. micidus, scarce and incomplete specimens doubtfully referred to the genera Archiclimacograptus and Acrograptus and scarce siculae of Cryptograptus sp. The associations allow us to identify the Pseudamplexograptus distichus Zone in Sierra de Lina and possibly the Pterograptus elegans Zone at Cauchari locality. Graptolite assemblages recorded in both zones allow assigning a middle-late Darriwilian (Middle Ordovician) age for the bearer levels.

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阿根廷普纳 Sierra de Lina 和 Cauchari 的达里维利期（中奥陶纪）爬行石

这篇论文报告了来自普纳浊积岩群的两个爬行石集合体，它们出露于阿根廷普纳西部、胡胡伊省和萨尔塔省的 Sierra de Lina 和 Cauchari 地带。在 Sierra de Lina 采集的爬行动物群包括 Didymograptus sp.、Glossograptus fimbriatus、Cryptograptus schaeferi、Archiclimacograptus sp.、Pseudamplexograptus distichus、Pseudamplexograptus latus、?Urbanekograptus retioloides 和 Hustedograptus sp.、这些联系使我们能够确定在 Sierra de Lina 的 Pseudamplexograptus distichus 区和可能在 Cauchari 地点的 Pterograptus elegans 区。在这两个区域记录的爬行石集合体可将承载层的年代定为达里维利期（中奥陶世）中晚期。

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来源期刊

Geological Journal 地学-地球科学综合

CiteScore

4.20

自引率

11.10%

发文量

269

审稿时长

3 months

期刊介绍： In recent years there has been a growth of specialist journals within geological sciences. Nevertheless, there is an important role for a journal of an interdisciplinary kind. Traditionally, GEOLOGICAL JOURNAL has been such a journal and continues in its aim of promoting interest in all branches of the Geological Sciences, through publication of original research papers and review articles. The journal publishes Special Issues with a common theme or regional coverage e.g. Chinese Dinosaurs; Tectonics of the Eastern Mediterranean, Triassic basins of the Central and North Atlantic Borderlands). These are extensively cited. The Journal has a particular interest in publishing papers on regional case studies from any global locality which have conclusions of general interest. Such papers may emphasize aspects across the full spectrum of geological sciences.