کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5781078 | 1635369 | 2017 | 48 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Geomorphological and sedimentary evidence of probable glaciation in the Jizerské hory Mountains, Central Europe
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Geomorphological and sedimentary evidence of probable glaciation in the Jizerské hory Mountains, Central Europe Geomorphological and sedimentary evidence of probable glaciation in the Jizerské hory Mountains, Central Europe](/preview/png/5781078.png)
چکیده انگلیسی
The Jizerské hory Mountains in the Czech Republic have traditionally been considered to be a highland that lay beyond the limits of Quaternary glaciations. Recent work on cirque-like valley heads in the central part of the range has shown that niche glaciers could form during the Quaternary. Here we report geomorphological and sedimentary evidence for a small glacier in the Pytlácká jáma Hollow that represents one of the most-enclosed valley heads within the range. Shape and size characteristics of this landform indicate that the hollow is a glacial cirque at a degraded stage of development. Boulder accumulations at the downslope side of the hollow probably represent a relic of terminal moraines, and the grain size distribution of clasts together with micromorphology of quartz grains from the hollow indicate the glacial environment of a small glacier. This glacier represents the lowermost located such system in central Europe and provides evidence for the presence of niche or small cirque glaciers probably during pre-Weichselian glacial periods. The glaciation limit (1000Â m asl) and paleo-ELA (900Â m asl) proposed for the Jizerské hory Mountains implies that central European ranges lower than 1100Â m asl were probably glaciated during the Quaternary.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 280, 1 March 2017, Pages 39-50
Journal: Geomorphology - Volume 280, 1 March 2017, Pages 39-50
نویسندگان
ZbynÄk Engel, Marek KÅÞek, Marek Kasprzak, Andrzej Traczyk, Martin Hložek, Klára Krbcová,