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threedimensional bodies

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Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2018
DOI: 10.5382/SP.20.18
EISBN: 9781629496399
..., and mapping of exposed rocks at the Murowa diamond mine are summarized from previous work, and these data collectively form the basis for emplacement interpretations and threedimensional (3-D) geologic models of each body. Structural observations are used to interpret the presence of a km-scale tensile bridge...
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Journal Article
Journal: The Leading Edge
Published: 01 February 1988
The Leading Edge (1988) 7 (2): 16–29.
... normal and six shear) can exist in a threedimensional body, but by extending the reasoningwhich estab- lished that E,~ = +, it follows that only three shear strainsare independent. S,mce stressand strain are both expressedas ratios, they are often confused. However, there are two important differences...
Journal Article
Published: 01 June 1968
Jour. Geol. Soc. India (1968) 9 (1): 75–81.
... of the sulphides is under publication. METHOD OF STUDY In the Mosaboni mine mapping and sampling were carried out along the two sections mentioned above so as to bring out a generalized picture of the threedimensional compositional variation of the mined area. Samples were collected along the cross-cuts and winzes...
Journal Article
Published: 01 April 1998
Bulletin of the Seismological Society of America (1998) 88 (2): 393–399.
... is an extension of a recent study in which the IBEMwas applied to simulate wave diffraction by threedimensional topographies (Luz6n et al., 1997). Our goal now is to reduce the numerical burden of this method. We follow the approach suggested by Bouchon et aL (1995) to take advantage of the significant spatial...
Journal Article
Published: 01 February 1996
Bulletin of the Seismological Society of America (1996) 86 (1B): S126–S137.
... of the basins, while it is significant at sites inside the Los Angeles Basin. Love waves generated at the northern edge of the basin are attenuated while propagating laterally within the soft surface layers. It is important to notice that the amplitude of the body waves one time reflected from the surface...
Journal Article
Journal: Geophysics
Published: 15 May 2024
Geophysics (2024) 89 (4): F61–F75.
...-filled fractures with a resistivity of 5  Ω m , and there is a fault above the reservoir with a resistivity of 500  Ω m . These anomalous bodies extend 2 km in the x -direction. The model’s structure is irregular and we create it using Gmsh ( Geuzaine and Remacle, 2009 ). The initial...
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Journal Article
Journal: Geology
Published: 04 March 2025
Geology (2025)
... plasma II multicollector ICP-MS at Cardiff University. See Supplemental Material S2 for detailed methods. Figure 1. Bathymetric map of Hess Deep (East Pacific Rise, 2°15 N, 101°30 W) showing a threedimensional perspective of the locations of samples collected during RSS James Cook cruise JC21 using ROV...
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1981
AAPG Bulletin (1981) 65 (1): 86–102.
... the fluid-flow paths within them. Roosevelt Hot Springs is thought to derive its heat from a cooling magma body at depth; sources of heat for the other systems are unknown, but it is speculated that these systems derive their heat from deep circulation along faults in zones of high thermal gradients...
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Journal Article
Published: 01 January 2019
Russ. Geol. Geophys. (2019) 60 (1): 97–107.
... for computational modeling of electromagnetic fields in two- and threedimensional media ( Obukhov, 1967 ; Davydov, 1968 ; Kaufman and Tabarovsky, 1970a ,b; Obukhov and Butkovskaya, 1974 ; Berdichevsky and Zhdanov, 1984 ; Tabarovsky et al., 1988 ; Epov and Antonov, 1999 ). Moreover, the Born approximation...
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Journal Article
Published: 01 October 1997
Bulletin of the Seismological Society of America (1997) 87 (5): 1305–1323.
... W. D. (1975) . The application of finite element analysis to body wave propagation problems , Geophys. J. R. Astr. Soc. 42 , 747 - 768 . Trifunac M. D. (1971) . Surface motion of a semi-cylindrical...
Journal Article
Published: 01 June 1996
Bulletin of the Seismological Society of America (1996) 86 (3): 616–626.
...) earthquake source in that model. Modeling is by eighth-order finite differencing on a staggered grid, which automatically generates all body and surface waves, including multiples and conversions. Application is to the 1981 USGS refraction survey and the 6 August 1979 Coyote Lake event in central California...
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1988
AAPG Bulletin (1988) 72 (10): 1254–1269.
... interpretations using a threedimensional (3-D) seismic data set have contributed much to the understanding of the local structural complexity of the basin in the Sirikit area. Figure 3 —West-east interpreted stratigraphic cross section of Phitsanulok basin showing structural configuration and basin-fill...
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Journal Article
Published: 01 June 1997
Bulletin of the Seismological Society of America (1997) 87 (3): 528–539.
... constraints on dynamic strains and rotations using measurements of ground motion from a unique small-aperture seismic array in Mexico City. This array is unique within Mexico because it is three dimensional, containing both surface and borehole sensors. Threedimensional seismic arrays currently operate...
Journal Article
Published: 01 December 1999
Bulletin of the Seismological Society of America (1999) 89 (6): 1428–1438.
... in the voluminous body of literature on the subject (e.g., Bogdanoff et al., 1965; Johnson and Gallery, 1972; Adman and Muleski, 1981; Zerva et al. 1988; Zerva, 1992; Holzer et al., 1996; Trifunac et al., 1996; Ohmachi and Takahashi, 1996; Zhang and Papageorgiou, 1996; and many others). This is particularly...
Journal Article
Published: 01 February 1998
Bulletin of the Seismological Society of America (1998) 88 (1): 256–269.
... mainshock. Whereas this anomaly may represent brittle rocks associated with a fault-zone asperity that failed after the mainshock, there is evidence to suggest it may be a body of serpentinite. The serpentinite exhibits high velocities and is potentially less competent than surrounding country rock, thus...
Journal Article
Published: 11 March 2025
Journal of the Geological Society (2025) jgs2025-005.
... variations in textures and grain size (Table 1). Only one small core sample is known to have been obtained, during a fishing trip to clean the bottom hole of well 44/24b-2A. None of these igneous bodies has been dated radiometrically. A further 44 wells in the study area were documented as having no evidence...
Journal Article
Published: 01 March 1980
Jour. Geol. Soc. India (1980) 21 (3): 117–127.
...-3.1 2.77 Present study THREE DIMENSIONAL MODEL FOR RANIGANJ COALFIELD In order to find the depth-to-the-basement underlying the coalfield, a threedimensional model for the basin has been constructed utilising the residual gravity anomaly map and the density values. A computer programme for three...
Journal Article
Published: 01 February 2020
Italian Journal of Geosciences (2020) 139 (1): 9–29.
.... The pelagic successions of the study areas onlap Early Jurassic structural highs. These clastic bodies partially replace the typical Toarcian reddish marls and shales of the Umbria-Marche-Sabina palaeogeographic Domain at different stratigraphic levels. The clasts range from blocks to megablocks; extraclasts...
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Journal Article
Published: 01 January 2022
Russ. Geol. Geophys. (2022) 63 (1): 85–97.
..., Teelinsk, 4, Kaa-Khemsk, 5, Bolsheporoskii, 6, Shagonarsk, 7, Samagaltai; stars are the main events; 10 , a projection of the contour of a low-velocity crustal-mantle body with an increased heat flux. The study areas are marked with rectangles – Kuznetsk Alatau (in the north), Western Sayan and Tuva...
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Journal Article
Journal: Geophysics
Published: 18 March 2016
Geophysics (2016) 81 (2): C69–C77.
... ). The model size is 400    m × 600    m , with grid spacing Δ x = Δ z = 1    m . Finally, the anisotropic viscoelastic FD method is applied to a more complicated model with a salt body (Figure  9 ). This section is taken from the left part of the 2007 BP TTI model...
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