苏北盆地高邮凹陷戴南组高导泥岩的高导成因与沉积环境探讨

HIGH-CONDUCT ORIGIN AND ENVIRONMENT OF THE HIGH CONDUCTIVE MUDSTONES IN DAINAN FORMATION,GAOYOU DEPRESSION

薛良清

Xue Liangqing

高邮凹陷戴南组高导泥岩的高导特性,主要是由泥岩盐度差异引起的,与化学成分和粘土矿物关系不大.高导泥岩沉积时,不是一个简单的湖水不断扩大,而是一个扩大、缩小、再扩大、再缩小的过程,水深、水介质性质亦随之相应变化.反映了在构造背景稳定条件下,气候和地表迳流注入量的控制作用.

The high conductivity of high conductive mudstone is mainly caused by sali-nity difference, and has less relation with the chemical composition and claymineral of mudstones.The deposition of the mudstone is not a simpleprocess of the lake enlargement, but a process of enlarging-contracting andreenlarg-recontracting.In the meantime, the depth of water and the nature ofmediums were changed correspondingly.This shows the control actions of ancientclimate and direct runoff under the stable structural background.

10.11743/ogg19880407