Tsunami deposits on the coastline of west Crete (Greece)
Tsunami deposits on the coastline of west Crete (Greece)
复制标题
海啸沉积在克里特岛西部海岸线上（希腊）
DOI：
10.1016/j.epsl.2007.05.041
复制
发表时间：
2007
影响因子：
5.3
通讯作者：
S. Scheffers
中科院分区：
文献类型：
--
作者：
A. Scheffers;S. Scheffers
地中海东部和爱琴海是欧洲地震最活跃的地区。从历史上看，世界的这一地区发生过许多地震，并有全面的海啸记录。尽管如此，海啸的现场证据是罕见的，尽管许多新构造运动肯定引发了非常强烈的海啸波。沿着克里特岛西部的海岸线，我们发现了海啸影响的证据，例如：1）双峰沉积物（由贝壳碎片组成的漂浮在沙子中的大型碎屑）; 2）生物凹槽倾斜的大型巨石错位; 3）重达75吨的巨石（带有噬石虫或Cliona钻孔）被抛向陆地并嵌入海洋贝壳地层中。本文记录了这些沉积物，并讨论了它们是否起源于公元365年发生的突然隆升。此外，数值放射性碳年龄揭示了两次海啸的发生日期为5660年BP和500年BP。其他海啸影响的证据进行了讨论，但没有支持的数字测年，由于缺乏合适的材料。
The eastern Mediterranean and the Aegean Sea in particular, are the most active seismic regions in Europe. Historically, numerous earthquakes have occurred in this part of the world and comprehensive tsunami recordings exist. Nevertheless, field evidence of tsunamis is rare, although many neotectonic movements certainly must have triggered very strong tsunami waves. Along the coastlines of western Crete, we found evidence for tsunami impacts, such as 1) bimodal deposits (large clasts floating in sands comprised of shell fragments); 2) dislocation of large boulders with tilting of biogenous notches; and 3) boulders (with Lithophaga or Cliona borings) weighing up to 75 tons thrown onshore and imbedded in strata of marine shells. This paper documents these deposits and discusses whether they originated from the sudden uplift that occurred in 365 AD. Moreover, numerical radiocarbon ages reveal the occurrence of two tsunamis dated to 5660 yrs BP and 500 yrs BP. Evidence for other tsunami impacts is discussed, but not supported by numerical dating due to the lack of suitable material.