白沙口海岸带沉积物的床面形态及层理构造

各种类型的沉积物床面形态及层理构造大量保存在沉积岩中,成为恢复古沉积环境和古地理的重要标志之一。1981年,作者在山东白沙口海岸,对海岸带不同地貌条件下的床面形态系列及层理构造进行了观测,并对其形成过程进行了探讨。

BEDFORMS AND BEDDING STRUCTURES OF THE SEDIMENTS IN THE BAISHAKOU COASTAL ZONE

Situated on the southern coast of Shangdoug Peninsula, Baishakou belongs to barrier lagoon coast. The bedforms and bedding structures of sediments in this region were investigated in 1981. The investigation shows that geomorpho-logical units, such as longshore barriers, lagoon, tidal delta, tidal channel and beach, have been developing there. In the coastal zone, there are asymmetric ripples, symmetric plane top ripples, interference ripples, backwash marks, permeate current borne rill marks, plane bed surface, surviving wave ripples, ＇D＇ erosional holes, wind-borne ripples and so on. They have formed into a special distributional series of the sediment bedforms on the barrier lagoon coast.