The Konservat-Lagerstätte Menat (Paleocene; France) – an overview and new insights

IF 1.3 4区地球科学 Q2 GEOLOGY

Geologica Acta Pub Date : 2018-06-21 DOI:10.1344/GEOLOGICAACTA2018.16.2.5

S. Wedmann, D. Uhl, T. Lehmann, R. Garrouste, A. Nel, B. Gomez, Krister T. Smith, Stephan F. K. Schaal

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引用次数: 19

Abstract

The Konservat-Lagerstatte Menat (Puy-de-Dome, France) is an outstanding archive of a Paleocene ecosystem, which was deposited in a former maar lake. Excavations during the last century have yielded an extensive flora and fauna record, therefore an overview of the current state of paleontological investigations is given in this paper. Additionally, new results based on excavations from the years 2012 to 2014 are presented. The preservation of organic matter differed strongly between excavation sites, probably influenced by weathering processes. The stratigraphic succession consists mostly of organic-rich clays, intercalated with hard, silicified claystones. In 2013 and 2014 both impression and compression fossils were collected from different outcrops. Compression fossils from organic-rich clays were exceptionally well-preserved and included three-dimensional plant remains. A new database on insect paleobiodiversity was compiled. The occurrence of charcoal in almost all horizons investigated suggests that paleowildfires were frequent during the Paleocene in the vicinity of the paleolake. The results confirm the high potential of the Konservat-Lagerstatte Menat for future paleontological research.

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Konservat Lagerstätte Menat（古新世；法国）——概述和新见解

Konservat Lagerstatte Menat（法国Puy de Dome）是古新世生态系统的杰出档案，该生态系统沉积在前马尔湖。上个世纪的发掘已经产生了广泛的动植物记录，因此本文概述了古生物学研究的现状。此外，还介绍了基于2012年至2014年挖掘的新结果。有机物的保存在不同的挖掘地点有很大的差异，可能受到风化过程的影响。地层序列主要由富含有机物的粘土组成，夹有坚硬的硅化粘土岩。2013年和2014年，从不同的露头采集了印模化石和挤压化石。富含有机质粘土的压缩化石保存得非常完好，其中包括三维植物遗骸。编制了一个关于昆虫古生物多样性的新数据库。几乎在所有调查的层位中都有木炭的存在，这表明古湖附近的古新世古野火很频繁。这一结果证实了湖螈在未来古生物学研究中的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geologica Acta 地学-地质学

CiteScore

2.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： - Relevant conceptual developments in any area of the Earth Sciences. - Studies presenting regional synthesis. - Thematic issues or monographic volumes presenting the results from one or more research groups. - Short papers reflecting interesting results or works in progress. - Contributions and results from Research Projects, Workshops, Symposiums, Congresses and any relevant scientific activity related to Earth Sciences. - Geologica Acta aims to stimulate rapid diffusion of results and efficient exchange of ideas between the widespread communities of Earth Science researchers (with special emphasis on Latinamerica, the Caribbean, Europe, the Mediterranean