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Small shards and long distances — three cryptotephra layers from the Nahe palaeolake including the first discovery of Laacher See Tephra in Schleswig‐Holstein (Germany)
Journal of Quaternary Science ( IF 2.3 ) Pub Date : 2020-12-13 , DOI: 10.1002/jqs.3264
Sascha Krüger 1, 2 , Christel Bogaard 3
Affiliation  

Investigations of Lateglacial to Early Holocene lake sediments from the Nahe palaeolake (northern Germany) provided a high‐resolution palynological record. To increase the temporal resolution of the record a targeted search for cryptotephra was carried out on the basis of pollen stratigraphy. Three cryptotephra horizons were detected and geochemically identified as G10ka series tephra (a Saksunarvatn Ash), Vedde Ash and Laacher See Tephra. Here we present the first geochemically confirmed finding of the ash from the Laacher See Eruption in Schleswig‐Holstein—extending the so far detected fallout fan of the eruption further to the north‐west. These finds enable direct stratigraphical correlations and underline the potential of the site for further investigations.

中文翻译:

小碎片和长距离-来自纳河古湖的三个隐密码层,包括石勒苏益格-荷尔斯泰因州(德国)的第一个Laacher See Tephra发现

来自纳赫古湖(德国北部)的晚冰期至早期全新世湖沉积物的调查提供了高分辨率的孢粉学记录。为了提高记录的时间分辨率,在花粉地层学的基础上进行了有针对性的隐密搜索。发现了三个隐眼层,并在地球化学上鉴定为G10ka系列特非拉(一种Saksunarvatn Ash),Vedde Ash和Laacher See特非拉。在这里,我们介绍了石勒苏益格-荷尔斯泰因州的拉赫湖喷发形成的第一个经地球化学方法确认的灰烬,并将迄今发现的喷发扇形尘埃扩展至西北部。这些发现使得能够直接进行地层对比,并强调了该地点进一步研究的潜力。
更新日期:2021-01-04
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