... laurentian university dike porcupine assemblage mineral exploration research centre magnetic modeling exploration geophysicist 10 greenstone belt abitibi greenstone belt 2D forward gravity and magnetic modeling of the Porcupine assemblage, Matheson area Fabiano Della Justina* and Richard Smith...

... ABSTRACT We propose a technique to reconstruct the magnetic anomaly from a dike in a way that the influence of the induced magnetization, remanent magnetization, and geological dip are completely removed, resulting in a new totally symmetric anomaly that could avoid the need of reduction...

... for such difficult tasks as mapping of the conductive dikes and veins covered with sediments and having thickness 10 times more than the horizontal thickness of the dike or a vein. Furthermore, the MVP method can reliably identify the position of every individual dike or vein in cases where the distance between them...

... directly in the time domain, requiring no transformations. A synthetic example of an airborne time domain survey passing above a vertical, polarizable dike is presented. upstream oil & gas debye spectra dispersion curve chargeable material frequency domain british columbia conductivity...

... exploration ltd silver queen dike silver queen area new stockwork porphyry discovery geology dcip titan 24 quantec geoscience ltd resistivity Silver Queen, a new stockwork porphyry discovery using the Titan 24 DCIP and MT Nasreddine Bournas* and Rob Hearst, Quantec Geoscience Ltd, Ellen Clements...

... is driven by the geophysical data. The interpreter is required to decide which of these model schemes is appropriate to each specific problem. For example, when looking at diabase dike geometry in the Sudbury Basin the discrete body method must be used, When attempting regional geological mapping...

... data sensitivity matrix joint equivalent source magnetic data equivalent source total field susceptibility equation minimum curvature joint processing geophysics inverse problem dike equivalent source layer thin sheet upstream oil & gas gradient anomaly Joint processing of total...

... deconvolution can estimate not only depth and horizontal location but also dip and susceptibility (or the susceptibility-thickness product) by using only the total magnetic intensity (TMI) anomaly (for the sheet-like body or thin dike) or its horizontal derivative (for the semiinfinite half space or contact...

... array resistivity sounding technique were used to detect hidden problems inside and under dike like pipe-seeps. This paper discusses the exploration strategy and the effect of geological characteristics. A practical approach of combining seismic and electric resistivity measurements was applied...

.... Our testing has shown a rate of transmission of the GPR, signal in pegmatite to be between 0.095 and 0.105 m/ns. anomaly color plot exploration tool southern california water table resource in place estimate gpr pegmatite dike radar patterson reserves evaluation cavity application...

... is imperfect, and the real sources are different from the idealized. euler method horizontal gradient depth estimate derivative calculation automatic method anomaly total field thin dike noise werner method geophysics salt lake city different method dike geometry manual method local...

... ABSTRACT Microgravity and ground-based magnetic investigations of exposed fissures and underlying mafic dikes, as well as exposed lava tubes in Holocene basalts on the eastern Snake River Plain of Idaho demonstrate that gravity and magnetic anomalies created by these features can be detected...

... Summary On October 22, 1997, Inco announced the discovery of a new deposit located at the south end of the Copper Cliff offset, a dike extending south from the Sudbury Igneous Complex (SIC) near the city of Sudbury, Ontario. The deposit was detected in 1992 as an off-hole borehole EM anomaly...

... sudbury structure susceptibility killeen metals & mining interpretation vector total magnetic field magnetic survey borehole dike GM 2.7 Combined 3-D Interpretation of Airborne, Surface, and Borehole Vector Magnetics at the McConnell Nickel Deposit. Edna L. Mueller, William A. Morris...

... ABSTRACT No preview is available for this paper. gravity dike australian geodynamic cooperative research centre noddy geophysical data anomaly oldenburg artificial intelligence evolutionary algorithm machine learning history inversion reservoir characterization inversion...

... ABSTRACT No preview is available for this paper. apparent resistivity boundary inversion seigel resistivity simple dike inverse modeling dike resistivity data field data electrode polarizability upstream oil & gas geophysics reservoir characterization pole-pole...

... ABSTRACT No preview is available for this paper. sp anomaly graben anomaly limestone dike resistivity dc resistivity reservoir characterization reflection survey foundation rock dam eng 3 upstream oil & gas self potential geophysical investigation corps us government...

...Evaluation of Borehole MMR for Fracture Detection Douglas .l LaBrecque and S. H. Ward, University of Utah Research Institute Earth Science Laboratory SUMMARY A model study was made of the mag- netometric (MMR) resistivity responses of a variety of dike-like bodies to determine if MMR could be used...

... analysis dike surface wave geophone upstream oil & gas Engineering I 143 drilling the entire 2 000 ft long area of interest on 5 and 10 ft centers would be prohibitively expensive. Alternate means were then sought to define the areas which contained voids. Initial geophysical testing A series...

... ABSTRACT No preview is available for this paper. frequency range electrode phase data surface wave upstream oil & gas porosity evaluation conductivity correlation reservoir characterization dike clay liner plume complex electrical resistivity terrain conductivity...