摘要
河北省平泉县下营坊一带,位于华北平原东北边缘,属于燕山山脉东段中低山地区(N40°45′,E118°41′)。冰川擦面条痕石类型较发育,特征明显。见有:龟背条痕石、扁平状五角形熨斗石、楔状箭镞石或弹头形石等。其中以龟背条痕石发育最为特征。擦面条痕石主要分布于桲椤树沟两侧山麓地带,海拔约500m。分布零星,断续延长约10km以上。本区冰川擦面条痕石的发现,对我国东部第四纪冰川及古气候、古环境的研究提供重要依据,因此具有重要科学价值。
The Xiayingfang district(N45′, E118°41′), pingquan county, Hebei Province, is located at the northeastern edge of the North China Plain. It is a middle-low hilly area in the eastern section of the Yanshan Mountains. In this district the glacial polished-striated pebbles have distinct features and many types, such as turtle back-like striated pebbles, pentagon iron-like flat pebbles, wedge-shaped arrow head-like pebbles and bullet-liked pebbles. Of these the most characteristic one is the turtle back-like striated pebble. Glacial polished-striated pebbles are mainly located in the foothills on either side of the Boluoshugou gully, at the heightof about 500 m above sea level. The pebbles are scattered intermittently in a belt about 10 km long. The discovery of glacial polished-striated pebbles provides important evidence for studying the Quaternary glaciers, paleoclimates, paleoenvironments in eastern China, so is of great scientific significance.
出处
《地质论评》
CAS
CSCD
北大核心
1991年第4期363-367,T001,共6页
Geological Review
