摘要
平庄盆地为受控于东、西两缘北北东向展布的美丽河—八里罕和黑水—汐子断裂的晚中生代断陷盆地。褶皱、断裂均较发育,盆地内外褶皱按轴向分为四组,形成顺序为:东西向—北西西向—北北东向—北北西向;断层按走向有东西向、北北东向、北西西向、北东东向和北北西向5组,一般均经历多期活动。根据盆地构造特征及地层接触关系得出盆地区域构造应力场曾发生多次北西西—南东东向挤压与拉伸的转化,在挤压背景下,盆地所在区上升,沉积间断,产生角度不整合,拉伸背景下,盆地所在区下降,接受沉积。
Pingzhuang basin is a fault basin of late Mesozoic era, and controlled by the NNE development′s Meili river-Balihan and Heisui-Xizi rift of north and west part margin. Fold and rift developed very well. The folds in basin抯 inner and outsider are divided into four teams, and the formation order is EW-NWW-NNE-NNW-NNE-NNW; The faults are divided into five groups by trend:EW,NNE,NWW,NEE and NNW, and most of them were endured lots of geologic processes. It can concluded that regional tectonic stress field of the basin changed a lot of times, NWW-SEE squeezing and stretch, by the structural feature and strata抯 contact. In the background of squeezing, the area of the basin lifts, the deposition breaks, and produces angular unconformity; in the background of stetch, the area of the basin descends and accepts deposition.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2002年第4期483-485,共3页
Journal of Liaoning Technical University (Natural Science)
