Difference between revisions of "Dictionary:Fault/es"

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{{#category_index:C|Falla}}
 
{{#category_index:C|Falla}}
  
<b>1</b>. A displacement of rocks along a shear surface; see Figures [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]], [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]], and [[Special:MyLanguage/Dictionary:Fig_F-4|F-4]].  
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<b>1</b>.El desplazamiento de las rocas a lo largo de superficie de cizalla; ver Figuras [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]], [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]], and [[Special:MyLanguage/Dictionary:Fig_F-4|F-4]].
The surface along which displacement occurs is called the <b>fault plane</b> (often a curved surface and not "plane" in the geometric sense).  
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La superficie a lo largo de la cual se produce el desplazamiento se denomina <b>plano de falla</b> (a menudo una superficie curva y no "plana" en el sentido geométrico).
[[File:Segf3.jpg|thumb|left|FIG. F-3. <b>Fault types</b>.]]
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[[File:Segf3.jpg|thumb|izq|FIG. F-3. <b>Tipos de fallas</b>.]]
The <b>dip</b> of the fault plane is the angle that it makes with the horizontal; the angle with the vertical is called the <b>hade</b>; other terms related to faulting are defined in Figures [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]], [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]], and [[Special:MyLanguage/Dictionary:Fig_F-4|F-4]].  
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El <b>buzamiento</b> del plano de falla es el ángulo que seforma con la horizontal; el ángulo con la vertical se llama <b>inclinación</b>; otros términos relacionados con fallas se definen en las Figuras [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]], [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]], y [[Special: MyLanguage/Dictionary:Fig_F-4|F-4]].
[[File:Segf2.jpg|thumb|FIG. F-2. <b>Fault nomenclature</b>.]]
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[[File:Segf2.jpg|thumb|FIG. F-2. <b>Nomenclatura de fallas</b>.]]
  
 
The <b>trace</b> of a fault is the line that the fault plane makes with a surface (often the surface of the ground, sometimes a bedding surface).  
 
The <b>trace</b> of a fault is the line that the fault plane makes with a surface (often the surface of the ground, sometimes a bedding surface).  

Revision as of 13:39, 6 April 2019

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1.El desplazamiento de las rocas a lo largo de superficie de cizalla; ver Figuras F-2, F-3, and F-4. La superficie a lo largo de la cual se produce el desplazamiento se denomina plano de falla (a menudo una superficie curva y no "plana" en el sentido geométrico).

FIG. F-3. Tipos de fallas.

El buzamiento del plano de falla es el ángulo que seforma con la horizontal; el ángulo con la vertical se llama inclinación; otros términos relacionados con fallas se definen en las Figuras F-2, F-3, y F-4.

FIG. F-2. Nomenclatura de fallas.

The trace of a fault is the line that the fault plane makes with a surface (often the surface of the ground, sometimes a bedding surface). Faults are classified as normal, reverse, or strike-slip, depending on the relative motion along the fault plane; see Figure F-3. A fourth type of fault, associated with plate movement, is a transform fault (q.v.). A hinge or scissors fault is produced by rotation of the blocks across the fault about an axis perpendicular to the fault plane so that throw varies along the fault trace. Primary faults may produce secondary stresses that produce secondary faults (which may be of different type). Thus thrusting may produce tensions that cause secondary normal faults. Faulting and folding are common responses to the same stresses; see Figure F-17. Faulting during sediment deposition (growth faulting) often affects the stratigraphy such that beds may abruptly thicken and become more sandy downthrown at a normal growth fault. Evidences of faults in seismic data[1] are principally by:

(a) abrupt termination of events, (b) diffractions, (c) changes in dip, either flattening or steepening, (d) distortions of dips seen through the fault, a consequence of raypath bending because of velocity changes across a fault, (e) deterioration of data beneath the fault producing a "shadow-zone," (f) changes in the pattern of events across the fault, and (g) occasionally a reflection from the fault plane. Faults (especially small ones) are often en echelon or braided rather than parallel and continuous.

FIG. F-4. Fault types. (a) A secondary antithetic fault, has throw in the direction opposite to that of the primary fault P and secondary synthetic fault S. (b) Faulting involving rotation that increases the throw of the fault. (c) Growth fault curved (listric) in both plan and cross-section. Fault movement contemporaneous with deposition produces thickening into the fault and a rollover anticline. (d) Development of a duplex structure by thrust faulting (overthrusting or underthrusting)[2].
FIG. F-4. Fault types. (Continued). (e) Wrench (strike-slip) faulting. A wrench fault often has associated secondary wrench, normal, and thrust faults and folding at roughly 30° to the wrench fault. Wrench fault traces are often en echelon rather than continuous. (f) Right-lateral wrench fault. Components of convergence or divergence may produce flower structures (see Figure F-12). (From Sheriff and Geldart, 1995, 369–370.) (g) Transitions from fault to fault may be accompanied by tear faults, folds, or in other ways. (h) Faulting associated with subduction zone. The accretionary wedge is generally built by underthrusting. (From Lowell, 1985.) (i) Transform fault offsetting spreading center. Rift faulting associated with extension is usually asymmetric[3].

2. In gravity or magnetic data, the edge of a thin, roughly horizontal slab with density or susceptibility different from that of horizontally adjacent material.


Referencias

  1. Sheriff, R. E; Geldart, L. P (August 1995). Exploration Seismology, 2nd Ed. Cambridge Univ. Press. p. 376, 461. ISBN 9780521468268.
  2. Boyer, Steven E.; Elliott, David (1982-09-01). "Thrust systems". AAPG Bulletin 66 (9): 1196–1230. http://aapgbull.geoscienceworld.org/content/66/9/1196.PDF version.
  3. Bally, A. W.; Snelson, S. (1980). Facts and principles of world petroleum occurrence: realms of subsidence. Memoir 6. Canadian Soc. Petr. Geol.. pp. 9–90.


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