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首页> 外文期刊>Journal of nannoplankton research: A publication of the International Nannoplankton Association >Pliensbachian-Toarcian calcareous nannofossil events in the Los Molles Formation, Neuquen Basin, Argentina
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Pliensbachian-Toarcian calcareous nannofossil events in the Los Molles Formation, Neuquen Basin, Argentina

机译：阿根廷内乌肯盆地Los Molles组的Pliensbachian-Toarcian钙质纳米化石事件

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摘要

Calcareous nannofossil investigations of Arroyo Lapa, Arroyo Lapa Norte, Chacay Melehue, and Arroyo Picún Leufú outcrops, southern Huincul high, Neuquen Basin, led to the recognition of a series of nannofossil events that could be correlated to the ammonite zones of west-central Argentina. These local nannofossil events were also compared to those of the Boreal and Tethys realms. In the late Pliensbachian Fanninoceras fannini ammonite Zone, the first occurrence (FO) of Biscutum finchii was documented. In the Fanninoceras disciforme ammonite Zone, the FO of Lotharingius hauffii and Lotharingius barozii occurred. In the early Toarcian Tenuicostatum ammonite Zone, the FO of Calyculus spp. and Lotharingius sigillatus, and last occurrence (LO) of Crucirhabdus primulus and Parhabdolithus liasicus were documented.
机译：内乌肯盆地南部Huincul高处的Arroyo Lapa，Arroyo Lapa Norte，Chacay Melehue和ArroyoPicúnLeufú露头的钙质纳米化石调查，导致人们认识到一系列与纳米比亚化石带有关的纳米化石事件。还将这些当地的纳米化石事件与北方和特提斯地区的事件进行了比较。在Pliensbachian Fanninoceras fannini ini铁矿带的晚期，记载了Biscutum finchii的首次出现（FO）。在扇形扇形亚am虫区中，发生了洛萨林斯·哈菲和洛萨林斯·巴罗齐的FO。在早期的Toarcian Tenuicostatum炸药区，Calyculus spp的FO。和Lotharingius sigillatus，以及Crucirhabdus primulus和Parhabdolithus liasicus的最后一次出现（LO）。

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