Geochemical characteristics of the fluid inclusions in the Gangxi Fault Belt, Huanghua Depression, B

来源 :浙江大学学报A | 被引量 : 0次 | 上传用户:fwj108580853
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
We studied the geochemical characteristics of the fluid inclusions in the Ordovician carbonates and the Oligocene Shahejie Formation sandstones from 15 wells in the Gangxi Fault Belt, Huanghua Depression. The fluid inclusions are all secondary with gas/liquid ratio of 5%~10%. Base on Raman they are mainly composed of H2O, CO2 and CH4. The homogenization temperatures, combined with burial and geothermal history of the host rock, indicate that the fluid flows in the Shahejie Formation and the Ordovician carbonates were trapped in Neocene. Using a VG5400 mass spectrometer, the helium isotopic compositions were analyzed. Interpretation of results suggested a significant amount of mantle-derived helium mainly accumulating in the intersections of the NWW trending Xuzhuangzi and NE trending Gangxi faults. The maturity of hydrocarbon decreases from the intersection to the outside pointing out that the fluid related to the NWW trending Xuzhuangzi and NE trending Gangxi faults.These factors implied the fluid inclusions have a close relationship to the local tectonic setting. Gangxi Fault Belt experienced intensive Neo-tectonic activities in Cenozoic. Widespread faulted-depressions and strong volcanic eruptions manifested its tectonic status of extensional stress field. Mantle uplift caused the movement of magma that carried mantle-derived gases and deep heat flows, the deep-rooted tension faults provided the passages for the gases and heat flows to shallow crust levels.
其他文献
波浪能压力泵是利用波浪能直接进行海水淡化的核心部件之一,其运行特性直接影响到波浪能海水淡化的效率。本文对振荡双浮子波浪能压力泵进行了物理试验研究,分析得到负载压强
磨刀门河口是珠江八大口门中输水输沙量最大的河口,口外拦门沙发育,其泄洪安全一直是磨刀门口门治理的头等大事。本文基于2003年洪季磨刀门河口拦门沙水域水文观测资料及近年
对于天然淡水冰而言,冰温是决定其性质的关键因素。基于对黑龙江红旗泡水库淡水冰现场实测冰温、辐射等数据的分析,利用冰温数据探讨天然淡水冰热扩散系数受冰温度的影响情况
在介绍凸面几何体概念和高光谱图像光谱线性模型的基础上,探讨了凸面几何体和高光谱图像的关系.提出了在光谱特性提取的基础上利用凸面几何体投影变换进行高光谱图像目标探测的方法,并成功地应用于亚运村建材市场屋顶板材和亚运村中心地区真假草坪的自动识别和探测中.试验证明该方法不需要探测目标的任何先验知识就能达到比较好的目标探测效果.同时试验还表明,由于高光谱图像波谱范围宽,特别是有短波红外、中红外和热红外范围
This paper proposes an eigenfunction expansion method to solve two-dimensional(2D)elasticity problems based on stress formulation. By introducing appropriate st
提出一种新型点吸收式波浪能装置,该装置采用弹簧回复液压缸作为二级能量转换机构,在波浪作用下装置垂荡做功。对装置受力分析后建立质量-弹簧-阻尼数学模型,运用基于简单格
This paper presents two numerical realization of Preisach model by Density Function Method (DFM) and F Function Method (FFM) for a giant magnetostrictive actuat
As a special geological phenomenon, the character of collapsible loess foundation is collapsible when penetrated by water. This character leads to the soil losi
The optimal operation conditions in an anoxic sulfide oxidizing (ASO) bioreactor were investigated. The maximal loading rates (LRs) observed through decreasing
与传统的干涉成像光谱技术相比,像面干涉成像光谱技术具有高光通量、高光谱分辨率、高目标分辨率等优点。在介绍像面干涉成像光谱技术的基本原理基础上,提出了通过推扫横向剪切