摘要
本文明确提出“构造附加静水压力”概念，认为地壳任一点静水压力部分是由重力所附加的静水压力和由构造作用力所附加的静水压力叠合而成。通过有限元模型数学模拟实验证实，处在挤压变形带、剪切变形带到引张变形带（ 及地域） 中岩石所承受的构造附加静水压力有逐次变小的规律性。构造附加静水压力梯度是流体及油气长距离水平运移的主要原因。通过构造校正测算方法，得出胶东“玲珑—焦家式”金矿成矿深度仅３ｋｍ 左右，并得到区内找矿工程的初步验证。以此方法还测得大别超高压变质带含柯石英榴辉岩形成深度≥３２ｋｍ 。
This paper definitely advanced a new concept —tectonic additional hydrostatic pressure and considers the hydrostatic pressure at evry spot of the earth crust to be partly resulted from gravitational additional hydrostatic pressure and tectonic additional hydrostatic pressure. By means of finite-element mathematical modeling, it is verified that the change of the tectonic additional hydrostatic pressure beared by the rocks from compression deformation belt, shear deformation belt to extension deformation belt has a ragularity of weekening one after another. The gradient of the tectonic additional hydrostatic pressure is the main cause of the long-distance migration of the fluid, oil and gas. By way of structural-corrected measuring and calculating, it is obtained that the metallogenic depth of “Linglong-Jiaojia Type” gold deposits in Jiadong area is only about 3 km which has been preliminarily verified by the exploration engineering and theformed depth of the coesite-bearing eclogites in Dabie ultrahighpressure metamorphic belt is ≥ 32km .
出处
《资源环境与工程》
1999年第3期3-11,共9页
Resources Environment & Engineering
基金
国家计委科技找矿项目
国家科委基础研究特别支持项目
国家攀登项目专题资助
关键词
构造附加静水压力
油气驱动
构造校正
测算
深度
金矿
榴辉岩
tectonic additional hydrostatic pressure migration of oil and gas structural-corrected measureing and calculating depth gold deposit eclogite
