• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NATO Advanced Research Workshop on Impact of the Environment on Human Migration in Eurasia >ENVIRONMENTAL CHANGES OF THE NORTHEASTERN BLACK SEA'S COASTAL REGION DURING THE MIDDLE AND LATE HOLOCENE.
【24h】

ENVIRONMENTAL CHANGES OF THE NORTHEASTERN BLACK SEA'S COASTAL REGION DURING THE MIDDLE AND LATE HOLOCENE.

机译：东北黑海沿海地区的环境变化中期和晚期全新世。

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper deals with questions of paleogeography of the Black sea's coast in the late Holocene on the basis of new data that include the lithology, palynology and geochronology of coastal marine, lagoon and deltaic sediments. The palynological results have shown that the warmest and dry conditions prevailed in the intervals 4100-3950, 3500-3300/3200, 2800-2400, 1650-1300 and 1000-900/800 yrs BP. The maxima of humidity for the studied period correspond with the chronological intervals 4500-4300 and 3950-3500 yrs BP, coinciding with the spread of forest communities. During an interval from 2500 up to 1500 BP (V centuries BC -V centuries AD) the dominance of the steppes formation was interrupted by phases of wetter climate which caused at first expansion of the wood-steppe vegetation, and then wide circulation of broad-leaved woods in the landscape. The palynological data have revealed a peculiarity that is connected to the economic activity of the local population. The study of the coastal morphology and sediment structure have revealed traces of two transgressive phases in relative sea level change for the time under consideration the first relates to the interval 4.2-3.7 ka BP, the second - covers last 1.5 ka. Complex litho-facial, archaeological and geochronological data testify to the existence of a period of downturn in sea level, which covers an interval from the end of the 2~(nd) millenium BP up to the middle of the 1~(st) millenium AD.
机译：本文在新数据的基础上，介绍了沿海海洋，泻湖和红细胞沉积物的岩性，椎相论和地理学的新数据，涉及黑海海岸古地理古地理问题的问题。 Palynological结果表明，在4100-3950,3500-3300 / 3200,2800-2400,1650-1300和1000-900 / 800yrs BP的间隔中，最温暖和干燥的条件普遍存在。研究期限的湿度最大值与时间间隔4500-4300和3950-3500 YRS BP相对应，与森林社区的蔓延相吻合。在2500年的间隔期间，高达1500 bp（Bc-v世纪Ad）的主导地层的主导地位由湿润的气候阶段中断，这在首先扩大了木草原植被，然后广泛循环在景观中的森林树林。 Palynology数据揭示了与当地人口的经济活动相关的特殊性。对沿海形态和沉积物结构的研究揭示了在相对海平面变化中揭示了两个越海平阶段的痕迹，第一次涉及4.2-3.7 ka bp，第二套 - 覆盖最后1.5 ka。复杂的Litho-Facial，考古和地理论数据证明了海平面的迟到的存在，从2〜（ND）千烯iumBP的结束到1〜（ST）千年的中间广告。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号