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  • ...rrange data, attributes constitute an open set, and because they are based on so few types of measurements, attributes are generally not independent. Att ...lithology, stratigraphic or structural discontinuity, etc.), usually based on local crossplots or local correlations with borehole-log or other measureme
    7 KB (961 words) - 14:01, 6 February 2018
  • ...ilar folding, beds tend to retain their vertical thickness ''t'', thinning on the sides of the fold.]]
    1 KB (227 words) - 19:55, 3 January 2018
  • {{#category_index:B|bald structure}} A structure on the crest of which some of the section (perhaps including an objective rese
    344 bytes (45 words) - 13:45, 9 February 2017
  • <b>Beta axis</b>, the longitudinal axis of a fold structure. Defined on a Schmidt net by the intersection of great circles that represent foliation
    408 bytes (55 words) - 09:40, 10 March 2020
  • ...ts. <b>4</b>. An exploration concession area. Blocks three miles on a side on the United States continental shelf are numbered to designate locations.
    640 bytes (96 words) - 13:10, 23 April 2017
  • ...dome or similar structure, wherein the boat track forms a spiral centered on the dome. This technique avoids time lost in changing from one line to anot
    382 bytes (59 words) - 11:54, 28 November 2017
  • ...d from one to the other upon reflection or refraction at oblique incidence on an interface. Since mode conversion is small for small incident angles, con ...information needed to create a three-dimensional depth image of rock type, structure, and saturant. For example, changes in V<sub>S</sub> with respect to V<sub
    4 KB (533 words) - 10:20, 19 September 2020
  • ...structure (fractures, cross bedding, etc.). Results are often illustrated on a log or graphed against depth.
    393 bytes (51 words) - 10:25, 8 December 2017
  • <b>1</b>. The highest point on a structure. <b>2</b>. The <b>peak</b> of a seismic (or other) wave.
    214 bytes (32 words) - 07:58, 2 October 2017
  • ...e of the derivatives of a field of values such as gravity, magnetics, time structure, etc. The objective of a derivative map is to emphasize short wavelength (h at gridded points on a map, often using a residualizing template based on polar representation of the Laplacian or by 2D convolution with such a temp
    1 KB (175 words) - 15:26, 30 January 2017
  • ...ounding shales; the greater compaction of the shales thus produces a drape structure over the reef, and the amount of the vertical expression of the drape featu
    613 bytes (91 words) - 17:59, 13 May 2017
  • Faults are classified as normal, reverse, or strike-slip, depending on the relative motion along the fault plane; see Figure [[Special:MyLanguage/ ...nto the fault and a rollover anticline. (<b>d</b>) Development of a duplex structure by thrust faulting (overthrusting or underthrusting)<ref name="Boyer Elliot
    5 KB (824 words) - 09:58, 9 April 2019
  • ...eflection horizon at the same time level. A spatially high-frequency event on a time slices is either a steeply dipping event or a high-frequency event i ...ation and its direction can be manipulated for optimum detection. The main structure in Figure 7.5-3d is a salt dome. Note the presence of tensional faults asso
    6 KB (965 words) - 10:42, 1 October 2014
  • down horizontally and therefore that the resulting section shows deeper structure at the time of deposition of the flattened horizon. Compaction because of o
    615 bytes (92 words) - 14:27, 4 November 2017
  • ...ero. The rate of drop depends on interatomic forces and hence on molecular structure. Achievable accuracy: 0.1 nT. Also called <b>proton-resonance magnetometer<
    1 KB (181 words) - 20:20, 27 January 2018
  • ...l]] deposits; assess risks posed by site conditions; design earthworks and structure foundations; and monitor site conditions, earthwork and foundation construc ...Site investigations are needed to gain an understanding of the area in or on which the engineering will take place. Investigations can include the asses
    3 KB (428 words) - 15:06, 21 May 2017
  • ...d objective is to define stratigraphic variations. Conclusions are usually on changes in normal-moveout, amplitude, and/or waveshape of reflection events
    673 bytes (94 words) - 00:14, 11 June 2017
  • <li>Adachi, M., 1954, On the proof of fundamental formula concerning refraction method of geophysica ..., Ground-penetrating radar survey design, in Bell, R. S., Ed., Proc. Symp. on
    40 KB (5,282 words) - 16:45, 23 February 2016
  • ...porous formations may be a trap if it has an impermeable cap; an unclosed structure may also be a trap if permeability variations block the escape route of flu
    761 bytes (110 words) - 17:57, 26 August 2017
  • {{#category_index:T|trap-door structure}} The high area on the upthrown side of each of two intersecting faults.
    199 bytes (26 words) - 18:02, 26 August 2017

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