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forced folds

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Series: Geological Society, London, Special Publications
Published: 01 January 1999
DOI: 10.1144/GSL.SP.2000.169.01.02
EISBN: 9781862394179
... Abstract In this paper the three-dimensional geometry and spatial organization of folds (both buckle folds and various types of forced folds) are considered, together with their associated fracture patterns, in an attempt to determine if these features can be used in regions of poor exposure...
Series: Geological Society, London, Special Publications
Published: 01 January 1999
DOI: 10.1144/GSL.SP.1999.169.01.16
EISBN: 9781862394179
... Abstract The geometries and densities of fractures associated with fold structures can be predicted by assuming that the strains accommodated by fractures mimic the bulk strains induced in the strata during folding. This paper examines, from a theoretical standpoint, the distributions...
Journal Article
Published: 21 August 2019
Journal of the Geological Society (2019) jgs2019-046.
... emplacement occurred at depths <1 km, but was still able to cause the local maturation of hydrocarbon source rocks. Sill emplacement affected the petroleum system by forming migration pathways, important reservoirs and also creating forced fold traps. DUG Insight software (v.4.3, 2018) was the main...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 2015
AAPG Bulletin (2015) 99 (6): 985-1012.
...Matthew M. Lewis; Christopher A.-L. Jackson; Robert L. Gawthorpe; Paul S. Whipp ABSTRACT Forced folds typically develop above the tips of propagating normal faults in rifts that contain thick, prerift salt or mudstone sequences. This structural style is associated with the deposition of wedge...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2013
GSA Bulletin (2013) 125 (11-12): 1874-1890.
...Christopher A-L. Jackson; Nick Schofield; Bogdan Golenkov Abstract Emplacement of magma in the shallow subsurface can result in the development of dome-shaped folds at the Earth’s surface. These so-called “forced folds” have been described in the field and in subsurface data sets, although...
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Series: Geological Society, London, Special Publications
Published: 01 January 1999
DOI: 10.1144/GSL.SP.1999.169
EISBN: 9781862394179
Series: Geological Society, London, Special Publications
Published: 01 January 1999
DOI: 10.1144/GSL.SP.1999.169.01.01
EISBN: 9781862394179
... and concentration of fluids within the crust and thus has important implications regarding the disposition of water, hydrocarbons and zones of mineralization. However, there are many mechanisms other than buckling operating in the crust which can give rise to folds. One of the most important is that of ‘forced...
Series: Geological Society, London, Special Publications
Published: 01 January 1999
DOI: 10.1144/GSL.SP.2000.169.01.10
EISBN: 9781862394179
... Abstract Forced-fold models, constructed from multiple sheets of rock layers and other materials, are deformed, under confining pressure, by the translations and rotations of a steel-block forcing assembly. The first-order response of these models is like that observed in earlier sets of models...
Series: Geological Society, London, Special Publications
Published: 01 January 1999
DOI: 10.1144/GSL.SP.2000.169.01.13
EISBN: 9781862394179
... in the basalt flows today. Peripheral to the Yakima fold belt, pre-basalt structures of different orientations project under the basalt pile. Some of these structures have continued to develop during and after basalt extrusion and have influenced structures in the basalt flows which are, therefore, ‘forced’. ...
Journal Article
Journal: AAPG Bulletin
Published: 01 July 1990
AAPG Bulletin (1990) 74 (7): 1038-1054.
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Examples of <b>forced</b> <b>folds</b> by growth of intrusions; see  Figure 8  for locati...
in > Geosphere
Published: 24 October 2018
Figure 20. Examples of forced folds by growth of intrusions; see Figure 8 for location. (A) Inline illustrating steep forced folds II and III affecting horizons 3 and 4. (B) Inline illustrating forced folds (I, II, III, IV) that affect Horizon 1, but not Horizon 2. The folds die out between
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Schematic diagram showing how intrusion-induced <b>forced</b> <b>folds</b> may impact pet...
Published: 17 February 2017
Figure 9. Schematic diagram showing how intrusion-induced forced folds may impact petroleum systems. See text for details.
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(A) Seismic section of <b>forced</b> <b>folds</b> and the underlying sill complex imaged ...
in > Geosphere
Published: 01 June 2016
Figure 8. (A) Seismic section of forced folds and the underlying sill complex imaged along the eastern margin of the Irish Rockall Basin. Sills are primarily emplaced within the Cretaceous, shale-dominated succession. The Paleocene and Eocene strata are volcaniclastic- and shale-dominated
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Map illustrating the distribution of igneous sills and <b>forced</b> <b>folds</b> in the ...
Published: 01 November 2013
Figure 4. Map illustrating the distribution of igneous sills and forced folds in the Ceduna sub-basin. The distribution of the folds is based on mapping of horizon C (i.e., top Pidinga Formation; see Fig. 1C for stratigraphic context). Note the close correspondence between igneous sills, which
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QUANTITATIVE DATA FOR IGNEOUS INTRUSIONS AND <b>FORCED</b> <b>FOLDS</b> IN THE BIGHT BASI...
Published: 01 November 2013
TABLE 1. QUANTITATIVE DATA FOR IGNEOUS INTRUSIONS AND FORCED FOLDS IN THE BIGHT BASIN IGNEOUS COMPLEX
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Restoration of extensional <b>forced</b> <b>folds</b>. (a) Cross section including all de...
Published: 01 May 2000
Figure 16 Restoration of extensional forced folds. (a) Cross section including all deformation associated with extensional forced folding. (b) Corresponding restoration. In this restoration, the lengths of the beds above and below the salt are identical (i.e., the cross section is balanced). (c
Journal Article
Journal: Interpretation
Published: 17 February 2017
Interpretation (2017) 5 (3): SK11-SK22.
...Figure 9. Schematic diagram showing how intrusion-induced forced folds may impact petroleum systems. See text for details. ...
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Length plotted against <b>forced</b> <b>fold</b> amplitude, for <b>folds</b> above differently s...
in > Geology
Published: 01 May 2017
Figure 4. Length plotted against forced fold amplitude, for folds above differently shaped intrusions, and thickness of laccoliths and large mafic sills (Tables DR1 and DR2 in the GSA Data Repository 1 ). Alu dome (Ethiopia) is shown with red star. Fields for individual, subaerial shield
Journal Article
Journal: GSA Bulletin
Published: 01 July 2015
GSA Bulletin (2015) 127 (7-8): 982-1000.
...Luis M. Agirrezabala Abstract Emplacement of shallow magmatic laccoliths can result in the development of dome-shaped forced folds and fractures in the overburden and at the depositional surface. These folds and fractures have been described from both outcrop studies and seismic interpretation...
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Graph of height in the section versus <b>forced</b> <b>fold</b> amplitude associated with...
in > Geosphere
Published: 24 October 2018
Figure 23. Graph of height in the section versus forced fold amplitude associated with forced fold I in Figure A1.12 . 1, 2, 3, and 4 are horizon numbers (see Fig. 4 ), in the Kora area in the Taranaki Basin, offshore New Zealand.