重庆科技学院学报（自然科学版）Issue(1)：12-16,5.
旬邑地区三叠系长6-长7段沉积特征研究
The Sedimentary Characteristics of Chang 6 & 7 Formations of Triassic in Xunyi Area
摘要
Abstract
Under the circumastances of accelerating the oil & gas exploration for tight reservoirs, further study to sedimentary characteristics is becoming more significant.This paper analyzed the depositional characteristics of Chang 6 &7 oil formations of Triassic in Xunyi area, based on abundant previous achievements and detailed data which concerning core, logging and outcrop strata.During the period, this area located in structural slope zones and its depositional supply was sufficent;meanwhile, the transformation of sedimentary facies was fast.Braid-river delta front to deep lacustrine facies dominated here in Chang 6&7 sedimentary system which approached the prove-nance.The sand body were mainly consist of underwater distributary channel sand bodies and deep-water gravity current deposits.Debris flows which were accompanied by slides, slumps and turbidity currents occupied the major part of sand body in deep-water deposition.The thin layers of tuff and deformation structures in oil shale reflected frequent volcanic activities and tectonic movements.This also provided a basis for triggering conditions of gravity current in deep-water.关键词
旬邑地区/致密油气/沉积体系/深水重力流Key words
Xunyi area/tight oil and gas/sedimentary system/gravity flow in deep-water分类
天文与地球科学引用本文复制引用
闻金华,李文厚,李智超,陈萌..旬邑地区三叠系长6-长7段沉积特征研究[J].重庆科技学院学报（自然科学版）,2016,(1):12-16,5.基金项目
国家自然科学重点基金项目“坳陷型富烃凹陷的主要特征和形成的动力学环境---以鄂尔多斯盆地为例” （）
