The Lateglacial and Holocene environmental history of the Ioannina basin, north-west Greece
The Lateglacial and Holocene environmental history of the Ioannina basin, north-west Greece
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希腊西北部约阿尼纳盆地的晚冰期和全新世环境历史
DOI：
10.1016/j.quascirev.2004.02.003
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发表时间：
2004
影响因子：
4
通讯作者：
P. Tzedakis
中科院分区：
文献类型：
--
作者：
I. Lawson;M. Frogley;C. Bryant;R. C. Preece;P. Tzedakis
本研究集中在古环境分析的一个长期的核心部分，从部分排水，构造约阿尼纳盆地，希腊西北部。这些数据涵盖了晚冰期和全新世，包括花粉、软体动物、磁化率、烧失量和粒度分析。这些增加了以前发表的介形虫和稳定同位素数据从同一沉积物序列。该序列的年龄模型是基于19 AMS日期，其中五个是使用一种新的程序从沉积物中分离的微碳。花粉数据表明，虽然温带林地扩大在晚冰期开始，只有有限的林地收缩发生在新仙女木年代，尽管强有力的证据表明，在邻近的亚得里亚海的海面温度急剧下降，在这个时候。与此相反，大规模的植被和沉积变化发生在音乐会在全新世，其中一些可能归因于人类的影响。与其他记录从约阿尼纳盆地的比较表明，以前，更多的沿岸的花粉序列并没有构成一个完整的代表性记录晚冰期和全新世植被变化。
This study centres on palaeoenvironmental analysis of the upper part of a long core from the partially drained, tectonic Ioannina basin, north-west Greece. The data span the Lateglacial and Holocene and comprise pollen, mollusc, magnetic susceptibility, loss-on-ignition and particle size analyses. These augment previously published ostracod and stable isotope data from the same sediment sequence. The age model for the sequence is based on 19 AMS dates, five of which were obtained using a novel procedure for the separation of microcharcoal from sediment. The pollen data suggest that although temperate woodland expanded at the beginning of the Lateglacial, only limited woodland contraction occurred during the Younger Dryas chronozone, despite strong evidence for a sharp drop in sea surface temperature in the neighbouring Adriatic at this time. In contrast, large-scale vegetational and sedimentological changes occur in concert during the Holocene, some of which may be ascribed to human impact. Comparison with other records from the Ioannina basin suggests that previous, more littoral pollen sequences did not constitute a wholly representative record of Lateglacial and Holocene vegetational change.