摘要
利用2000年3月6日的TM数据以及1981年4月21日的MSS数据对静海县0～30m以内地层的古河道分布进行了解译,通过研究,发现古河道埋深在8.0m以下,属浅埋古河道类型,流向由南向北,走向N、NNE,平面上可划为三条河道带,总体上呈现出平原区辫状水系特征。按地层埋深推断古河道的形成发育时间,浅埋古河道带可划为二期,大致以26m为界,以下为第一期古河道,分布在②带,属南运河和黑龙港河上更新-全新世早期的废弃的古河道。埋深8.0～26.0m的古河道为第二期古河道,为早全新世古河道。静海县第一海相层开始沉积,充填和掩盖了所有古河道。早全新世低潮坪时期,冷期时也有河流摆动。
Based on the two sets of TM （2000.03.06） and MSS （ 1981.04.21 ）, the distribution of ancient channels in Jinghai County has been interpreted in the article. It is validated by drilling and high-density resistivity method. The ancient channels in Jinghai County belonged to shallow buried ancient channel with depth of 8.0 m, and N, NNE direction. The shallow buried ancient channel zones in Jinghai appear plait-like. According to the buried depth, the ancient channels are divided into two stages in the area. The first stage belonged to the NanYunHe River and HeiLongGang River ancient channel zone, which have developed from about late Pleistocene to Early Holocene. The buffed depth is bellowed 26 m. The second stage belonged to the ancient channel zone within in a buffed depth of 8.0 - 26 m, which have developed since Early Holocene.
出处
《地质调查与研究》
2008年第4期321-327,共7页
Geological Survey and Research
基金
天津市矿产资源补偿费项目(津地任[2006]号)
关键词
浅埋古河道
分布
特征
shallow buried ancient channel
distribution
characteristics
