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Magnetic susceptibility/es

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Proceedings Papers

Paper presented at the 4th ISRM Young Scholars Symposium on Rock Mechanics, May 10–13, 2017
Paper Number: ISRM-YSS-2017-011
... time ss of who un F analyzer ble XRF an d secondary has a dimen seconds for from atom by any con n. lts ionships of sorption ar , and calciu ation. There d, magnetic magnetic su onsideration dry density height) trim value, magn absorption. es and th analyzed on metry (XRF m, mangane of the porta tive...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428248
... simultaneously (Zhang and Oldenburg, 1999). The inversion results for an isotropic model is shown in Fig- ure 2. Although the model identi es two anomalous layers, The recovered model from inverting the data in Figure 1a us- the model is de cient. The left peak of the recovered suscep- ing this approach is shown...
Proceedings Papers

Paper presented at the 2nd World Petroleum Congress, June 14–19, 1937
Paper Number: WPC-2080
.... AUSLUG Die starken magnetischen Empfindlzchkeiten der Dykes in der Permotrias-Gegend iin \Vesten von Madayuskar, zebgen, dass trot2 der Störungen durch die ton- und sandhaltigen Deckschachten, die Schmidt'sche U age Adern unter einer Dicke von über zehn A4etern nachweisen kann. Es ist aber unmöglich...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-250
..., und die Produktion zu erhöhen. Es zeigt sich dass GPR zuverlassige Ergebnisse Iiefert, hinsichtlich von ausfuehrlicher Planung von Bergwerk-goeologie und in der Vollstandigkeit der Struktur in den wieder aufgefuellten Gebieten. 1 INTRODUCTION The Canadian mining industry is faced...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1459
... along the regional Cinzento transcurrent shear zone striking WNW- ESE. Metavolcano-sedimentary rocks of the Águas Claras Formation and Grão Pará Group of the ~2.76 Ga Itacaiúnas Supergroup host this portion of the deposit. The shear zone © 2012 SEG DOI httpdx.doi.org/10.1190/segam2012-1459.1 SEG Las...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594763
... Mobile belt: Geochemical and isotopic study of the Várzea Alegre intrusive complex (VAIC), ES, Brazil: Revista Brasileira de Geociências, 30, 30 34, doi: httpsdoi.org/ 10.25249/0375-7536.2000301030034. Medeiros, S. R., C. M. Wiedemann, and S. Vriend, 2001, Evidence of mingling between contrasting magmas...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 4–6, 2014
Paper Number: SPE-167937-MS
... was compared against benchmark (BM) fluids using API-grade barite ( Table 2 and Table 3 ). Most of the oil-based fluids used a low-toxicity mineral oil as the base fluid. These, denoted as OBM, were hot rolled for 16 hours at 250°F, with rheology and electrical stability (ES) measured at 120°F and high...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1205
.... There are three active diamond mines within 100 km s of TKC: Snap Lake, Diavik, and Ekati. Reports on DO-27 es- timate a resource of 30 million tonnes with a grade of 89 carats per hundred tonnes (Harder et al., 2008b). The background lithology at TKC consists of post-Yellowknife Supergroup granite, with biotite...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583463
... by Hanesch et al. (2006) for experiments with synthetic lepidocrocite with organic carbon, suggesting that lepidocrocite may be the mineral present in the sample. © 2021 Society of Exploration Geophysicists 10.1190/segam2021-3583463.1 First International Meeting for Applied Geoscience & Energy Page 3165 eS...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0215
..., as described by Chandler et al. (1981), allows the correlation of gravity and magnetic anomalies independent of any assumptions about source geometry. The es- timates of anomaly source magnetization/density ratios provided by this technique can provide important clues for the identifica- tion of likely source...
Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-0623
..., An algorithm for least squares es- timation of nonlinear parameters: J. Sot. Indust. Appl. Math., no. 2, p. 431-441. Marquardt, D.W., 1970, Generalized inverses, ridge regres- sion, biased linear estimation, and nonlinear estimation: Technometrics, v. 12, p. 591-611. Pelton, W.H., Rijo, L., Swift, C.M., Jr...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-1428
... and a static suscepti- bility of = 0.03 SI. Figures 3(a) and (b) show the modelled frequency response for the two-layer models. Figure 3(a) shows (a) Freq. domainH response. (b) Imaginary part ofH. (c) TEM response. 10 0 10 1 10 0 10 1 10 2 10 3 E M 63 R es p o n se ( m V ) Time (msec) 2 Layer: layer...
Proceedings Papers

Paper presented at the 1999 SEG Annual Meeting, October 31–November 5, 1999
Paper Number: SEG-1999-0291
... with the vertical conduc- tivity (z) and magnetic susceptibility (z) distributions b y simple formulae: S (d) = Z d 0 dz (z) = Z d 0 (z) dz; X (d) = Z d 0 (z) dz: (3) Therefore, by di erentiating the conductance-depth and in tegral susceptibilit y-depth curv es, w e can nally ob- tain the conductivity...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0288
... in the form of tensor integrals over a do- main with anomalous parameters. The developed approximations combine linear and nonlinear es- timations depending on the range of the complex conductivity and magnetic susceptibility pertur- bations. The introduced family of nonlinear ap- pro ximations could form...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17796457
... at other parts are heavily influenced by the assumptions made. Based upon this observation, we developed a new approach for character- izing the uncertainty in the magnetization estimates, and sub- sequently delineating high-confidence zones for which the es- timates of magnetizations are robust against...
Proceedings Papers

Paper presented at the 1982 SEG Annual Meeting, October 17–21, 1982
Paper Number: SEG-1982-0350
.... Shallow zone interpretation is es- > c, 0 O-600- sentially an estimate of terrain correction errors. Depth estimates in this case indicate that the Mississippian structure controls that of the younger formations. Simultaneous Inversion of Gravity PF1.5 and Magnetic Anomalies M. R. Hong. Univ. of Texas...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0216
..., ARC0 Resources Technology The use of Poisson s theorem for moving-window analysis of gravity and magnetic data sets, as described by Chandler et al. (1981), allows the correlation of gravity and magnetic anomalies independent of any assumptions about source geometry. The es- timates of anomaly source...
Proceedings Papers

Paper presented at the 1986 SEG Annual Meeting, November 2–6, 1986
Paper Number: SEG-1986-0143
.... of Calgary, Canada. Smith. B., 1984, A gravity study of the geologic boundary separating the Klamath Mountains and Cascades Range Provinces in Northern Cali- fornia: M.S. thesis, Colorado School of Mines. Inverse Problem in Gravity and Magnetism G/M 1.3 A. G&en, Bureau de Recherches geologiques et Mini&es...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0207
... and locations of faults on the surface are already known from the geologic map, hence reasonable initial models can be constructed. This is es- pecially useful for the magnetic inversion, since a poor initial model could result in unstable solutions, but the high degree of similarity of the models indicate...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0535
... of direction es- timation is, in general, not applicable because of the highly variable magnetization direction in high-susceptibility bodies. However, the inversion of amplitude data has proven to be © 2012 SEG DOI httpdx.doi.org/10.1190/segam2012-0535.1 SEG Las Vegas 2012 Annual Meeting Page 2 Main Menu...

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