贵德盆地地质—地球物理特征对地热资源的控制分析  

An Analysis of Guide Basin Geological and Geophysical Characteristics in Geothermal Resource Control

作　　者：甘斌 李百祥 张乾 侯利朋 张志强 

机构地区：[1]青海省环境地质勘查局青海省环境地质重点实验室青海九〇六工程勘察设计院,青海西宁810007 [2]甘肃省地矿局第二地质矿产勘查院,甘肃兰州730020

出　　处：《中国锰业》2017年第3期69-73,80,共6页China Manganese Industry

摘　　要：在充分收集区域地质和地球物理资料的基础上,分析贵德盆地主边界断裂性质、地震系统活动断层调查资料、石油系统在盆地地球物理调查圈定的盆地基底形态和盆地内电磁剖面资料,确定盆地受右行走滑断裂控制;同时依据盆地内地层沉积规律和长宽比接近3,呈菱形盆地形态,由此认为贵德盆地是一个受右行右阶走滑断裂控制在阶区形成的新生代断陷盆地,具备形成拉分盆地的基本构造条件,根据贵德盆山构造格局确定了断裂对流型带状热储分布和传导面状热储特征及埋藏条件。Based on comprehensive collection of regional geological and geophysical data, this paper analyzes the main boundary fracture properties of Guide basin, including the active fault survey data of the seismological system, the basin basement pattern and the electromagnetic profile data of the petroleum system in basin geophysical survey. It is determined that the basin is controlled by the dextral strike slip fault. At the same time, we get close to the stratigraphic sedimentary regularity and the length-width ratio close to 3 of the diamond basin. It is concluded that Guide basin is a Cenozoic rift basin formed by the dextral right stepping strike slip faults control, as has the basic structural conditions of forming pull apart basin. According to Guide basin-range tectonic pattern, we can confirm the distribution of fracture-convection type banded in thermal resource, including the characteristics of conductive planar thermal resource and the buried condition.

关 键 词：地质-地球物理特征 右行右阶走滑断裂 盆山构造格局 地热资源的控制 

分 类 号：P618.13[天文地球—矿床学]