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Thyspunt

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Journal Article
Published: 01 December 2017
South African Journal of Geology (2017) 120 (4): 459–476.
...D. Claassen; M. de Wit Abstract Thyspunt is located along the southern coastal margin of the Eastern Cape Province, South Africa, between Oyster Bay and Cape St. Francis (~88 km west of Port Elizabeth). Field observations, thin section analysis, interpretation of geophysics, a review of more than...
FIGURES | View All (11)
Journal Article
Published: 01 June 2014
South African Journal of Geology (2014) 117 (1): 109–128.
... the coastal margin and occur in the first few hundred metres from shore. Zone A occurs closest to the shoreline and records the lowest sediment thicknesses. At Thyspunt zone A extends inland from the coastal margin for ~250 m and sediment thicknesses here range between 3 to 12 m. Zone B defines the inland...
FIGURES | View All (14)
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(a)  and  (b)  Locality of <b>Thyspunt</b> within South Africa and the Eastern Cap...
Published: 01 December 2017
Figure 1. (a) and (b) Locality of Thyspunt within South Africa and the Eastern Cape Province. (c) Map showing the geology of the area investigated (geology after Goedhart et al., 2008 ) .
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Selected field observations at <b>Thyspunt</b>.  (a)  TMG bedrock contacts beneath...
Published: 01 December 2017
Figure 4. Selected field observations at Thyspunt. (a) TMG bedrock contacts beneath overburden sediments at Thyspunt. (b) The upper transitional contact between the Goudini and Skurweberg Formations at Thyspunt. (c) Delineation of intraformational units within the Skurweberg Formation
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Selected field structures and steroeplots of faults and joints at <b>Thyspunt</b>....
Published: 01 December 2017
Figure 6. Selected field structures and steroeplots of faults and joints at Thyspunt. (a and b) Map showing the location of inferred faults in the Thyspunt and De Hoek areas. Areas of interest are outlined in red and enlarged aerial views of coastal exposures where inferred faults
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Map of the covered <b>Thyspunt</b> palaeovalleys.  (a)  Map showing contoured bedr...
Published: 01 December 2017
Figure 8. Map of the covered Thyspunt palaeovalleys. (a) Map showing contoured bedrock elevation (at 5 m intervals) beneath overburden for the entire study area. (b) Larger scale map depicting contoured bedrock elevation (1m intervals) beneath overburden cover at Thyspunt. Note that bedrock
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Selected field and core observations of <b>Thyspunt</b> overburden sequences.  (a)...
Published: 01 December 2017
Figure 10. Selected field and core observations of Thyspunt overburden sequences. (a) Deeply weathered exposure of Alexandria Group conglomerate comprising ferruginised quartzite clasts set in a sandy to silty matrix observed in a road cutting on the Oyster Bay road. (b) A ~1 m thick
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Map and     2   1  2      D model of overburden sequences at <b>Thyspunt</b>. (a) ...
Published: 01 December 2017
Figure 11. Map and 2 1 2 D model of overburden sequences at Thyspunt. (a) Map showing the thickness of overburden sediments at Thyspunt. Thickness zones along with bedrock substrate are outlined (b) Annotated Google Earth screenshot views of the 2 1 2 D model depicting
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Location of the existing Koeberg site and the potential <b>Thyspunt</b> nuclear si...
Published: 01 May 2015
Figure 1. Location of the existing Koeberg site and the potential Thyspunt nuclear site in southwest South Africa. The light-shaded areas correspond to deep gold-mining regions.
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Organizational structure of the SSHAC Level 3 PSHA for the <b>Thyspunt</b> site.
Published: 01 May 2015
Figure 2. Organizational structure of the SSHAC Level 3 PSHA for the Thyspunt site.
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Earthquake catalog (1690–2011) developed for the <b>Thyspunt</b> PSHA. Magnitudes ...
Published: 01 May 2015
Figure 7. Earthquake catalog (1690–2011) developed for the Thyspunt PSHA. Magnitudes are moment magnitude, M w . K and C identify the Koffiefontein and Ceres regions, respectively.
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Seismic sources defined for the <b>Thyspunt</b> PSHA, shown together with the eart...
Published: 01 May 2015
Figure 9. Seismic sources defined for the Thyspunt PSHA, shown together with the earthquakes in the declustered catalog. The dashed circle is the 320 km radius from the site within which site characterization is prescribed by regulatory guidance. Magnitudes are M w . The brown lines are fault
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Locations of the selected sites in Europe (Bruce, Canada; <b>Thyspunt</b>, South A...
Published: 01 September 2014
Figure 2. Locations of the selected sites in Europe (Bruce, Canada; Thyspunt, South Africa; and Yucca Mountain, Nevada, are outside the map) overlying the subdivisions of the Euro‐Mediterranean area into its main tectonic regimes developed for the SHARE project ( Delavaud et al. , 2012
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<b>Thyspunt</b> site with geologic formations and site characterization locations....
Published: 03 June 2014
Figure 4. Thyspunt site with geologic formations and site characterization locations. Numbers and letters indicate boreholes in which shear‐wave velocities were measured ( Bommer et al. , 2014 ). The color version of this figure is available only in the electronic edition.
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Site‐specific shear‐wave velocity model for the <b>Thyspunt</b> site: (a) median s...
Published: 03 June 2014
Figure 5. Site‐specific shear‐wave velocity model for the Thyspunt site: (a) median shear‐wave velocity profile and (b)  σ ln V S profile.
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Site‐specific layering model developed for the <b>Thyspunt</b> site.
Published: 03 June 2014
Figure 6. Site‐specific layering model developed for the Thyspunt site.
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Examples of simulated shear‐wave velocity profiles for the <b>Thyspunt</b> site.
Published: 03 June 2014
Figure 7. Examples of simulated shear‐wave velocity profiles for the Thyspunt site.
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Schematic representation of the <b>Thyspunt</b> probabilistic seismic‐hazard analy...
Published: 03 June 2014
Figure 19. Schematic representation of the Thyspunt probabilistic seismic‐hazard analysis sigma model.
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( a ) Distribution of the Algoa Group basal gravel deposits at <b>Thyspunt</b> and...
Published: 01 June 2014
Figure 13 ( a ) Distribution of the Algoa Group basal gravel deposits at Thyspunt and ( b ) greater Cape St. Francis areas as derived from borehole data ( Raubenheimer et al., 1988a , 1988b ; Hanson et al., 2012a ; Engelsman and Constable, 2012 ).
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SSC  model for the  PSHA  performed for the <b>Thyspunt</b> site (star). The fault...
Published: 01 November 2013
Figure 2. SSC model for the PSHA performed for the Thyspunt site (star). The fault sources are the Plettenberg ( PLET ), Gamtoos ( GAM ), Kango (KNG), and Worcester (WOR) faults, and the Agulhas Fracture Zone (AFZ). The area sources are the Extended Continental Crust ( ECC ), Karoo (KAR