摘要
鞍本地区，从太古宙到新生代地层齐全。其中有鞍山式铁矿、菱镁矿、煤、粘土矿等沉积矿产，有古基底构造和盖层构造，有径向裂谷构造和纬向地粮构造。特别是在鞍山狭小范围内出现多期回归性垂直运动，蔚为地质构造奇观。所有这些都体现了两极挤压构造运动史。
The strata from Archean to Cenozoic distribute in Anshan - Benxi area, and thereare lots of sedimentary deposits in them, for example, BIF(banded iron formation) ore, coal,clay, ect. The structures of paleo-basement and cover rock are very complicated. There aremeridian rifting structures and parallel geosyncline structures. Especially in Anshan, multiplephases and multicycle vertical movement can be found. All of these suggest its structural recordsresult from 'two pole compression deformation'According to geotectonic mechanics and astronomy, we know Earth isn' t a ball but aellipsoid like an egg with the polar diameter longer than the equator' s. Because the materials onthe polar place create larger force of compression, they must move t
出处
《前寒武纪研究进展》
1999年第3期22-29,共8页
Progress in Precambrian Research
关键词
两极挤压
蘑菇状复背斜
铁矿
地质构造
two-pole-compression deformation, anticlinorium tectonic, cycle
