联合剖面资料解释的几种比值方法     

王兴泰  孙仁国  曲增芳 《吉林大学学报(地球科学版)》1988,(1)

本文讨论了联剖资料解释中的一些有关问题:介绍了两种比值多数;给出了几种地电体上各种比值参数的分布特征。最后,通过一些野外实例说明了比值法在联剖异常解释中的应用效果。  相似文献   

SLB56／75型“三合一”取心钻进系统          下载免费PDF全文

阳东升  梁元濂  周铁芳 《探矿工程》1996,(5):1-3

论述了将绳索取心,螺杆站,不提钻换钻头三项技术结合在一起的新型取心钻进系统,介绍了系统的结构,工作原理及其技术性能参数和操作要点。  相似文献   

Oxygen bulk diffusion measurements and TEM characterization of a natural ultramylonite: implications for fluid transport in mica-bearing rocks   总被引：1，自引：0，他引：1  

Farver  & Yund 《Journal of Metamorphic Geology》1999,17(6):669-683

Oxygen bulk diffusion rates were experimentally determined in a natural ultramylonite sample ( c . 5   μ m grain size; 15–20% biotite, 20% quartz, 60–65% feldspars, and minor Fe-oxides) from the Gerrish Island shear zone, SE Maine, USA. The diffusion experiments were performed at 250–550  °C and 100  MPa water pressure. Oxygen bulk diffusion rates were determined both parallel and perpendicular to the strong foliation of the sample. The Arrhenius parameters for transport parallel to the foliation are: D _bulk0=2.0×10⁻¹¹ m² s⁻¹ and Q =30±6 kJ mol⁻¹. The bulk diffusivity perpendicular to the foliation is about a factor of 3.5 less than that parallel to the foliation with the same activation energy. The values of bulk diffusivity and activation energy obtained are consistent with ionic diffusion through a static aqueous fluid, suggesting that an interconnected fluid exists in the ultramylonite even under hydrostatic conditions. The microstructure of the ultramylonite was characterized using transmission electron microscopy (TEM). The nature and distribution of the interconnected fluid cannot be completely resolved from the TEM analysis; however, the low percentage of three-grain channels and open grain/interphase boundaries suggests that the fluid resides as a thin film on the grain surfaces. The results of this study have direct applications in many important geological settings and provide valuable insights into the observed rapid diffusion rates, strong lithological control and pervasive nature of fluid transport in mica-bearing rocks.  相似文献   

Enhanced phytoextraction of Pb and other metals from artificially contaminated soils through the combined application of EDTA and EDDS   总被引：1，自引：0，他引：1  

《中国地球化学学报》2006,25(B08):253-253

  相似文献   

江汉盆地应城—监利剖面重震联合反演   总被引：1，自引：0，他引：1  

王震  刁博 《现代地质》2005,19(4):603-607

使用重磁剖面图形交互实时计算正反演解释系统(IGGM)进行应城—监利剖面的重力反演。通过对剖面进行重震联合反演,得出该地区的构造格局,结果与地质事实相符,并推测出3条新的断层。J—T2和S两密度小的地层分隔其他密度大的地层,地层的速度、密度大小相间分布,形成“三硬夹两软”地层的规律。同时还分析了研究区重力、磁性和电性特征指示的地质构造,探讨了该区域的构造演变过程、基底、断层、褶皱、受力与构造运动之间的关系,指明喜山运动对江汉盆地改造和油气成藏的重要意义。  相似文献   

塔河油田深层砂岩油藏描述研究     

杨秋来  俞春阳  钱书红 《新疆地质》2003,21(3):335-338

针对塔河油田深层砂岩油藏埋深大、油层薄、非均质性强的特点，对塔河油田2区三叠系油藏进行了油藏描述研究，对油藏特征、储层展布、隔夹层分布、储层非均质特征有进一步认识，为改善油藏开发效果奠定了坚实基础。  相似文献   

近红外反射光谱学在岩石矿物研究中的应用——Ⅰ．快速测定地质样品中化合水   总被引：1，自引：4，他引：1       下载免费PDF全文

龙梅  裴世桥 《岩矿测试》2003,22(3):169-173

应用近红外反射光谱学方法无损快速测定了各种地质样品中化合水。使用偏最小二乘回归法，在近红外波长范围分离出与化合水含量有关的光谱信息。大多数地质样品的近红外反射光谱估算结果与重量法吻合。实验结果表明，近红外反射光谱学测定地质样品中化合水更简单、更容易。  相似文献   

GIS中线元不确定性的综合量化   总被引：5，自引：0，他引：5  

蓝悦明  陶本藻 《武汉大学学报(信息科学版)》2003,28(5):559-561

研究了矢量GIS中数据不确定性与模型不确定性的综合影响，提出了其综合不确定性的量化方法，表明了数据不确定性与模型不确定性的综合影响是可以量化的。  相似文献   

Moment tensors of acoustic emissions in shear faulting under plane-strain compression     

Fernanda C. S. Carvalho  Joseph F. Labuz   《Tectonophysics》2002,356(1-3)

The study of localized failure under controlled conditions can be accomplished within a laboratory setting with the University of Minnesota plane-strain compression apparatus. The device provides an opportunity to observe shear faulting and to compare displacements from acoustic emission (AE) sources with global measurements. A biaxial compression test on a sandstone specimen was performed with monitoring of AE. The plane-strain test showed that the shear fault was not formed until after peak load. Compaction of the shear fault was observed from the axial and lateral measurements of displacement and the orientation of the failure plane. The AE events were modeled as displacement discontinuities. The complicated deconvolution process for the transducer transfer function was eliminated by using a simplified calibration procedure. The sources of the postpeak events were characterized as being caused predominantly by slip in the direction of the global failure plane, although components of displacement associated with closing were identified. To provide an order of magnitude estimate of the slip, the field observation of a 10⁻⁴ strain drop over the seismic area was assumed. The tangential displacement from 110 AE events was estimated to be 0.01 mm. During the same period of time, the displacement along the shear fault from global measurements was 0.03 mm.  相似文献   

液塑限联合测定法的若干问题探讨     

殷春娟  崔永高  郑大龙 《上海国土资源》2007,(1):63-66

对液塑限联合测定法数据进行整理,采用基于EXCEL图表处理功能编制的电子表格计算法代替规范作图法,既方便又提高工效。同时对上海滨海平原区土层的液塑限试验合格品的临界相关系数平方值R2进行了探讨,并结合实践分析了上海滨海平原区土层的液塑限相关系数特点。  相似文献