伊比利亚西北部Miño河中与古渔网有关的河流沉积物的古环境数据

Q4 Earth and Planetary Sciences
J. Sanjurjo-Sánchez, Carlos Arce-Chamorro, V. Barrientos, Ana Goy-Diz
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引用次数: 0

摘要

河流沉积物提供了第四纪的环境记录。在某些情况下,河流沉积是由人为过程造成的,这些过程导致某些河流河段的水状况发生变化。这就是大坝的情况。据报道,一些水坝或部分水坝系统在过去存在,至少从几千年前开始。这些水坝被用于捕鱼目的,被称为捕鱼堰。在最近发表的一篇文章中,已经证明了河流厚沉积物是由伊比利亚西北部一条河流的筑坝系统造成的(河流Miño, Pontevedra)。光激发发光(OSL)提供了这种河流沉积物的埋藏年龄,显示了1300年的河流记录。记录的沉积速率与该地区已知的气候波动不符。本文对该记录的沉积阶段进行了识别,并研究了碎屑和有机质含量,以评估记录沉积期间(814±134 ~ 1837±11 AD)环境和河流条件的变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Palaeoenvironmental data from fluvial deposits associated to ancient fishing weirs in the Miño river, NW Iberia
Fluvial sediments provide environmental records of the Quaternary. In some cases, fluvial deposits are caused by anthropogenic processes that cause changes in the water regime of some river stretches. This is the case of dams. It has been reported that some dams or partial damming systems existed in the past, at least from some thousands of years ago. Such dams were used for fishing purposes and are referred as fishing weirs. In a recently published work it has been demonstrated that a fluvial thick deposit was caused by a damming system in a river of NW Iberia (River Miño, Pontevedra). Optically stimulated luminescence (OSL) provided the burial age of such fluvial deposit, showing a 1300-year-old fluvial record. The sedimentation rates of the record did not match with known climate fluctuations in the area. In this work, the sedimentation phases of such record are identified, and the detrital and organic matter content is studied to assess any change occurred in the environmental and fluvial conditions during the deposition period of the record that ranges from 814±134 to 1837±11 AD.
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来源期刊
Cadernos do Laboratorio Xeoloxico de Laxe
Cadernos do Laboratorio Xeoloxico de Laxe Earth and Planetary Sciences-Earth and Planetary Sciences (all)
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