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Algoa Group

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Journal Article

GEOGRAPHICAL CONTROLS ON SEDIMENT ACCRETION OF THE CENOZOIC ALGOA GROUP BETWEEN OYSTER BAY AND ST. FRANCIS, EASTERN CAPE COASTLINE, SOUTH AFRICA Available to Purchase

D. CLAASSEN
Published: 01 June 2014
South African Journal of Geology (2014) 117 (1): 109–128.
DOI: https://doi.org/10.2113/gssajg.117.1.109
...D. CLAASSEN Abstract Borehole data provide an opportunity to explore the thickness distribution of Late Cenozoic Algoa Group sediments along the southern Eastern Cape coastline, between Oyster Bay and Cape St. Francis, South Africa. Bedrock lithology, bedrock elevation, surface relief and sediment...
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View PDF for article title, GEOGRAPHICAL CONTROLS ON SEDIMENT ACCRETION OF THE CENOZOIC <span class="search-highlight">ALGOA</span> <span class="search-highlight">GROUP</span> BETWEEN OYSTER BAY AND ST. FRANCIS, EASTERN CAPE COASTLINE, SOUTH AFRICA
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Journal Article

A foraminiferal biostratigraphy and chronostratigraphy for the Pliocene to Pleistocene upper Algoa Group, eastern Cape, South Africa Free

I. K. McMillan
Published: 01 August 1990
South African Journal of Geology (1990) 93 (4): 622–644.
Add to Citation Manager for A foraminiferal biostratigraphy and chronostratigraphy for the Pliocene to Pleistocene upper <span class="search-highlight">Algoa</span> <span class="search-highlight">Group</span>, eastern Cape, South Africa
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Location of study area, showing the outcrop extent of the Algoa Group. Headlands-bypass dunefields in the Cape St. Francis area (modified after Illenberger and Burkinshaw, 2008; Goedhart et al., 2008).

Location of study area, showing the outcrop extent of the Algoa Group. Head... Available to Purchase

Published: 01 June 2014
Figure 1 Location of study area, showing the outcrop extent of the Algoa Group. Headlands-bypass dunefields in the Cape St. Francis area (modified after Illenberger and Burkinshaw, 2008 ; Goedhart et al., 2008 ).
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(a) Digital elevation model (DEM) of the Cenozoic Algoa Group outcrop within the study area, (b), the Thyspunt area, (c) the De Hoek and Cape St. Francis areas and (d) the St. Francis area. Model is derived from a 5m contour interval.

( a ) Digital elevation model (DEM) of the Cenozoic Algoa Group outcrop wit... Available to Purchase

Published: 01 June 2014
Figure 2 ( a ) Digital elevation model (DEM) of the Cenozoic Algoa Group outcrop within the study area, ( b ), the Thyspunt area, ( c ) the De Hoek and Cape St. Francis areas and ( d ) the St. Francis area. Model is derived from a 5m contour interval.
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Thickness of the Algoa Group as derived from borehole data. Thickness zones A to D relate to distance from the shoreline.

Thickness of the Algoa Group as derived from borehole data. Thickness zones... Available to Purchase

Published: 01 June 2014
Figure 3 Thickness of the Algoa Group as derived from borehole data. Thickness zones A to D relate to distance from the shoreline.
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(a) Individual borehole thicknesses of the Algoa Group in the vicinity of St. Francis plot against their distance from the shoreline. (b) Thickness zones A – D are primarily identified, with a interpreted overlap between zone A and B.

( a ) Individual borehole thicknesses of the Algoa Group in the vicinity of... Available to Purchase

Published: 01 June 2014
Figure 6 ( a ) Individual borehole thicknesses of the Algoa Group in the vicinity of St. Francis plot against their distance from the shoreline. ( b ) Thickness zones A – D are primarily identified, with a interpreted overlap between zone A and B.
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The distribution of Algoa Group sediment thickness from borehole data in the southern Thyspunt vicinity. The location of cross sections 1, 2 and 3 are also indicated.

The distribution of Algoa Group sediment thickness from borehole data in th... Available to Purchase

Published: 01 June 2014
Figure 7 The distribution of Algoa Group sediment thickness from borehole data in the southern Thyspunt vicinity. The location of cross sections 1, 2 and 3 are also indicated.
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The distribution of Algoa Group sediment thickness from borehole data in the Cape St. Francis area. Thickness zones A to C are identified. The location of cross section 4 is also indicated.

The distribution of Algoa Group sediment thickness from borehole data in th... Available to Purchase

Published: 01 June 2014
Figure 9 The distribution of Algoa Group sediment thickness from borehole data in the Cape St. Francis area. Thickness zones A to C are identified. The location of cross section 4 is also indicated.
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Schematic of the typical lithostratigraphic sequence of the Algoa Group in close proximity to the coastline near Thyspunt.

Schematic of the typical lithostratigraphic sequence of the Algoa Group in ... Available to Purchase

Published: 01 June 2014
Figure 11 Schematic of the typical lithostratigraphic sequence of the Algoa Group in close proximity to the coastline near Thyspunt.
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(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).

( a ) Distribution of the Algoa Group basal gravel deposits at Thyspunt and... Available to Purchase

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 ).
Journal Article

Site-specific geoscientific characterization of Thyspunt, South Africa – an area identified for the proposed construction of a nuclear power plant Available to Purchase

D. Claassen, M. de Wit
Published: 01 December 2017
South African Journal of Geology (2017) 120 (4): 459–476.
DOI: https://doi.org/10.25131/gssajg.120.4.459
... of the Algoa Group. The northwest-southeast striking bedrock forms part of the regional southeast plunging, north verging Cape St. Francis anticline. Locally, folds plunge gently southeastward at shallow angles, with axial planes dipping steeply southwest or northeast. Lineaments previously interpreted...
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View PDF for article title, Site-specific geoscientific characterization of Thyspunt, South Africa – an area identified for the proposed construction of a nuclear power plant
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Journal Article

Lithostratigraphy of the late Cenozoic Maputaland Group Available to Purchase

G.A. Botha
Published: 01 March 2018
South African Journal of Geology (2018) 121 (1): 95–108.
DOI: https://doi.org/10.25131/sajg.121.0007
... to characterise and sub-divide similar rocks and unconsolidated sediments on the Eastern Cape coast (Algoa Group; le Roux, 1990 ) and the southern Cape coast (Bredasdorp Group; Malan, 1989 ). In most cases direct correlation at the Formation level is possible between these lithostratigraphic groupings. Recent...
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View PDF for article title, Lithostratigraphy of the late Cenozoic Maputaland <span class="search-highlight">Group</span>
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Journal Article

Lithological and structural characteristics of Cape Supergroup rocks at Port Alfred, Eastern Cape, South Africa Free

P. W. K. Booth, A. J. Munro, R. W. Shone
Published: 01 December 1999
South African Journal of Geology (1999) 102 (4): 391–404.
... rocks elsewhere in the Cape Fold Belt. Palaeozoic Cape Supergroup strata are unconformably overlain by Tertiary and Quaternary sediments of the Algoa Group. Rocks of the Witteberg Group were folded into asymmetric folds and thrust faulted during the late Palaeozoic. Bedding-parallel thrusting, duplexing...
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The formation specific thickness range and average of basal deposits of the Algoa Group within the study area.

The formation specific thickness range and average of basal deposits of the... Available to Purchase

Published: 01 June 2014
Figure 14 The formation specific thickness range and average of basal deposits of the Algoa Group within the study area.
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Cross sections 1, 2 and 3. See figure 10 for location of these cross sections at Thyspunt. Areas where boreholes indicate the greatest thickness occurrences of the Algoa Group coincide with bedrock lows and surface elevation highs.

Cross sections 1, 2 and 3. See figure 10 for location of these cross sect... Available to Purchase

Published: 01 June 2014
Figure 8 Cross sections 1, 2 and 3. See figure 10 for location of these cross sections at Thyspunt. Areas where boreholes indicate the greatest thickness occurrences of the Algoa Group coincide with bedrock lows and surface elevation highs.
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Cross section 4. See figure 12 for the location of this cross section at Cape St. Francis. Areas where boreholes indicate the greatest thickness occurrences of the Algoa Group coincide with bedrock lows and surface elevation highs.

Cross section 4. See figure 12 for the location of this cross section at ... Available to Purchase

Published: 01 June 2014
Figure 10 Cross section 4. See figure 12 for the location of this cross section at Cape St. Francis. Areas where boreholes indicate the greatest thickness occurrences of the Algoa Group coincide with bedrock lows and surface elevation highs.
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(a) Individual borehole surface relief and bedrock elevation in the vicinities of Thyspunt plot against their distance from the shoreline. (b) Individual borehole thicknesses of the Algoa Group in the vicinity of Thyspunt plot against their distance away from the coastal margin. Four thickness zones, A to D, can be identified.

( a ) Individual borehole surface relief and bedrock elevation in the vicin... Available to Purchase

Published: 01 June 2014
Figure 4 ( a ) Individual borehole surface relief and bedrock elevation in the vicinities of Thyspunt plot against their distance from the shoreline. ( b ) Individual borehole thicknesses of the Algoa Group in the vicinity of Thyspunt plot against their distance away from the coastal margin. Four
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(a) Individual borehole surface relief and bedrock elevation in the vicinity of De Hoek and Cape St. Francis plot against their distance from the shoreline. (b) Individual borehole thicknesses of the Algoa Group in the vicinity of De Hoek and Cape St. Francis plot against their distance away from the coastal margin. Thickness zone A and C can be identified.

( a ) Individual borehole surface relief and bedrock elevation in the vicin... Available to Purchase

Published: 01 June 2014
Figure 5 ( a ) Individual borehole surface relief and bedrock elevation in the vicinity of De Hoek and Cape St. Francis plot against their distance from the shoreline. ( b ) Individual borehole thicknesses of the Algoa Group in the vicinity of De Hoek and Cape St. Francis plot against
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Map and 212 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 212 D model depicting that thicker overburden deposits (Algoa Group) are associated with higher surface relief (dune crests) (c) Peak overburden thickness of &gt;50 m occurs in areas that exhibit both elevated surface relief (dune crests) and bedrock elevation lows (palaeovalleys).

Map and 2 1 2 D model of overburden sequences at Thyspunt. (a) ... Available to Purchase

Published: 01 December 2017
that thicker overburden deposits (Algoa Group) are associated with higher surface relief (dune crests) (c) Peak overburden thickness of >50 m occurs in areas that exhibit both elevated surface relief (dune crests) and bedrock elevation lows (palaeovalleys).
Journal Article

Rayleigh group velocity extraction from ambient seismic noise to map the south Eastern Cape Karoo region, South Africa Available to Purchase

L.J. Bezuidenhout, M. Doucouré, V. Wagener, M. de Wit, A. Mordret, T. Lecocq, F. Brenguier
Published: 01 September 2017
South African Journal of Geology (2017) 120 (3): 341–350.
DOI: https://doi.org/10.25131/gssajg.120.3.341
...). To the south, the low velocity anomaly could correspond to the overlying Jurassic-Cretaceous sedimentary sequences of the younger Algoa Basin (Uitenhage Group). Figure 3. Station distribution and Ray Path coverage (red and white triangles indicate the location of the seismic stations for ArrayA and ArrayB...
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View PDF for article title, Rayleigh <span class="search-highlight">group</span> velocity extraction from ambient seismic noise to map the south Eastern Cape Karoo region, South Africa
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