| 巴布亚新几内亚奥雷褶皱冲断带构造几何学与运动学特征 |
| |
| 引用本文： | 王德良,梅廉夫.巴布亚新几内亚奥雷褶皱冲断带构造几何学与运动学特征[J].地质科技通报,2021,40(5):91-98. |
| |
| 作者姓名： | 王德良 梅廉夫 |
| |
| 基金项目： | 黄冈师范学院博士基金项目2042020032 |
| |
| 摘 要： | 奥雷褶皱冲断带是巴布亚新几内亚油气勘探的重要区域，但对褶皱冲断带的构造变形样式与演化认识不清。利用覆盖全区的2D和3D地震资料、钻井和地质信息，结合前人在该地区的地质研究成果，以断层相关褶皱理论为指导，对地震资料进行了闭合解释，系统分析了该区褶皱冲断带的构造几何学与运动学特征。研究结果表明:奥雷褶皱冲断带沿走向可以分为东段、中段和西段3段，其构造变形具有明显的差异性:①沿倾向从NE向SW具有变形层次渐浅、卷入层系渐新、变形程度渐弱的变化特征；②沿走向从NW向SE表现为扩展范围渐小、前陆沉积层系渐新、构造变形时间渐晚、缩短率渐大、缩短量渐小的特征；③西段和中段垂向上分层解体，东段为继承性变形。本次研究将助力巴布亚新几内亚的油气勘探，并为澳大利亚北缘区域构造演化研究提供盆内证据。
|
| 关 键 词： | 几何学 运动学 褶皱冲断带 前陆盆地 奥雷 巴布亚新几内亚 |
| 收稿时间： | 2021-05-08 |
Geometry and kinematics of the Aure fold-thrust belt,Papua New Guinea |
| |
| Abstract: | The Aure fold-thrust belt is an important area for oil and gas exploration in Papua New Guinea, but the structural deformation and evolution of the fold-thrust belt are not well understood.In this paper, 2D and 3D seismic data, drilling and geological data covering the structural belt, combined with previous geological research results, were used to identify the structure and kinematics characteristics of the Aure fold-thrust belt.Guided by the theory of fault-related folds, the seismic data are interpretation.The Aure fold-thrust belt can be divided into three sections along the strike, and the structural deformation of the belt has obvious differences, which are mainly reflected in the following aspects: ①In the trend from NE to SW, the deformation level is gradually shallow, the involved strata are gradually new, and the deformation degree is gradually weaker; ②Along the strike from NW to SE, the extension range becomes smaller, the foreland sedimentary strata become newer, the tectonic deformation time becomes later, the shortening rate becomes larger, and the shortening amount becomes smaller; ③The western section and the middle section are disintegrated vertically, and the eastern section is inherited deformation.The results can provide basin evidence for oil and gas exploration in Papua New Guinea and regional tectonic evolution in the northern margin of Australia. |
| |
| Keywords: | |
|
| 点击此处可从《地质科技通报》浏览原始摘要信息 |
|
点击此处可从《地质科技通报》下载全文 |
|
