Besides,cross-sections are not required to be planar or parallel in this method,and topological relationships are embedded in the generalized 3D geological models. Some special ideals are also proposed for some complex geological phenomena,such as stratum dying out,faults terminated within strata,etc....
Direct detection of high density bodies and faults via state-of-the-art gravity gradiometry is now a reality. Bodies greater than 200m in lateral extent are detectable. Implicit 3D structural geology modelling techniques derived from gravity curvature attributes of the observed gravity field present ...
Because surface processes can frequently remove, mask or suppress the surface expression of faults, geophysical imaging is needed to provide information on the geometric expression of the fault in the subsurface, including dips, the presence or absence of splays and folds and the nature of the mat...
It was formed in the Early Oligocene and is controlled by the many faults around it. The eastern boundary is the Yellow River fault zone; the western boundary is the eastern piedmont fault zone of the Helan Mountain; the southern boundary is the Niushoushan-Luoshan fault, and the northern ...
Reches has developed a model which suggests that four sets of faults, arranged in orthorhombic symmetry about the principal strain axes, are necessary to accommodate general, three-dimensional strain. This paper presents the odd-axis model, which recognizes certain geometric and kinematic relationships ...
In this paper, the author analyses the factors which affect the crustal stability in the Three-Gorge areas, such as the regional crust structure, crustal dynamic features, active faults and seismic activities. Then, the regional crust stability in the areas was evaluated by means of the method ...
The three faults are mainly NNE trending (as shown in Figure 1). The basin containing most of the volcanic cones has a length of about 70 km and a width of about 20 km. Both the LVF and CVF belong to the broad Changbaishan volcanic system, which share similar magma evolution processes....
Prediction of fluid flow in hydrocarbon reservoirs is complicated by the presence of faults, which may act as barriers to fluid flow, as conduits for flow, or be partially transmissive. Seismically resolvable faults can be mapped and incorporated explicitly into reservoir evaluation studies, but under...
Textural zones in the Haast Schist—a reappraisal Field subdivision of schist using textural appearance is valuable as a means to readily identify post‐metamorphic faults and to subdivide monotonous schis... IM Turnbull,N Mortimer,D Craw - 《New Zealand Journal of Geology & Geophysics》 被引量...
which indicates relatively large volumes of groundwater in the tunneling area and erosion of the fault by water. These faults and unfavorable geology will hinder safe construction. To predict geological phenomena such as karst and faults that may be encountered during construction, geophysical exploratio...