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Goudini Formation

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Journal Article
Published: 01 August 2008
The Canadian Mineralogist (2008) 46 (4): 825–830.
...Wilhelm J. Verwoerd Abstract The Goudini carbonatite volcano, in Northwest province, South Africa, has the shape of a maar and is a satellite of the Mesoproterozoic Pilanesberg alkaline complex. It owes its preservation to burial, subsequent exhumation, and extraordinary stability of the African...
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Journal Article
Published: 01 August 2008
The Canadian Mineralogist (2008) 46 (4): 1007–1022.
...Wilhelm J. Verwoerd Abstract Kamphaugite-(Y) crystallized as minute white spheroids in cavities of a quartz–barite vein in the Goudini volcanic carbonatite complex, South Africa. The maximum grain-size of individual plates forming these spheroids is 0.003 mm. The mineral is tetragonal with ω...
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Journal Article
Published: 01 December 2017
South African Journal of Geology (2017) 120 (4): 459–476.
... into bedrock of the Goudini Formation. Bedrock is covered by aeolian and marine sequences of the Algoa Group reaching 61 m in thickness. Understanding of the bedrock and overburden characteristics allow greater understanding of where additional design requirements will potentially be required at Thyspunt...
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Journal Article
Published: 01 June 2014
South African Journal of Geology (2014) 117 (1): 109–128.
... the Algoa Group is underlain by the argillaceous Goudini and Cederberg Formations. Bedrock elevations below sea-level and the occurrence of fluvial deposits above these argillaceous bedrock lithologies indicate the presence of a possible palaeo-valley near Thyspunt and Cape St. Francis. Such a palaeo-valley...
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( a ) Schematic stratigraphic log of the Cedarberg <b>Formation</b> showing the lo...
Published: 20 October 2016
Fig. 2. ( a ) Schematic stratigraphic log of the Cedarberg Formation showing the lower and upper contacts with the glacial Pakhuis and braided fluvial Goudini Formations, respectively. The upward-coarsening Cedarberg Formation is subdivided into the lower Soom and Upper Disa Members, both
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Lithostratigraphic correlation of the Port Stephens <b>Formation</b> and Nardouw S...
Published: 01 May 2003
; Pla, Plantation Member; PT, Pakhuis Tillite; CF, Cebarberg Formation; GF, Goudini Formation; SF, Skurweberg Formation; RF, Rietvlei Formation; BF, Baviaanskloof Formation. Key to symbols is given in the Supplementary Publication.
Journal Article
Published: 01 May 2003
Journal of the Geological Society (2003) 160 (3): 459–476.
...; Pla, Plantation Member; PT, Pakhuis Tillite; CF, Cebarberg Formation; GF, Goudini Formation; SF, Skurweberg Formation; RF, Rietvlei Formation; BF, Baviaanskloof Formation. Key to symbols is given in the Supplementary Publication. ...
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Image
Selected field and petrographic illustrations of TMG sequences,  (a)  Thin ...
Published: 01 December 2017
of Humansdorp (Photograph by M.L Goedhart). (d) Weathered shale and siltstone units of the Cedarberg Formation northwest of Humansdorp. (e) Bioturbated siltstone of the Goudini Formation, showing vertical tubes. (f) Bioturbated sandstone of the Goudini Formation has completely obliterated primary
Image
Selected field observations at Thyspunt.  (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
Journal Article
Published: 01 September 2019
South African Journal of Geology (2019) 122 (3): 317–330.
... ). Using the altitude effect calculated, recharge of groundwater being abstracted at Tweespruit is taking place around 1 200 m, and Erfdeel 1300 to 2000 m. In both cases recharge is either into the Goudini or Skurweberg Formations, and discharge from the Rietvlei Formation, similar to findings of Weaver...
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Sections and     2   1  2      D model of palaeovalleys in the study area. ...
Published: 01 December 2017
. Francis (c) and (d) Tony’s Bay (e) and (f) and Thyspunt. (g) Annotated Google Earth screenshot view of 2 1 2 D model showing lower bedrock elevations associated with argillaceous bedrock of the Goudini and Cedarberg Formation. The bedrock high northwest of Thyspunt is associated with strata
Journal Article
Published: 10 November 2020
South African Journal of Geology (2020) 123 (4): 597–614.
... referred to as an alkaline igneous body, AIB), which intrudes the ca . 2 200 Ma Silverton Formation close to the southernmost part of the Pilanesberg dyke swarm. The AIB has only been observed in cores from a borehole drilled close to Carletonville. It is hypocrystalline, containing randomly oriented...
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Journal Article
Published: 01 October 2003
Mineralogical Magazine (2003) 67 (5): 831–853.
...R. Halama; T. Wenzel; B. G. J. Upton; W. Siebel; G. Markl Abstract Basalts from the volcano-sedimentary Eriksfjord Formation (Gardar Province, South Greenland) were erupted at around 1.2 Ga into rift-related graben structures. The basalts have compositions transitional between tholeiite...
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Journal Article
Published: 01 May 2015
Earthquake Spectra (2015) 31 (2): 661–698.
... the site, which in order of decreasing age are the Peninsula, Cedarberg, Goudini, and Skurweberg Formations. The Peninsula and Skurweberg Formations consist primarily of quartzitic sandstone, the Cedarberg Formation consists of black shale, and the Goudini Formation consists of finer-grained quartzitic...
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Journal Article
Published: 03 June 2014
Bulletin of the Seismological Society of America (2014) 104 (4): 1601–1619.
... a known distance apart. Testing was performed in 21 boreholes located on the Goudini formation, 4 boreholes on the Cedarberg formation, 3 boreholes on the Skurweberg formation, and 1 borehole on the Peninsula formation. The Skurweberg and Peninsula formations are stiffer than the Goudini formation...
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Journal Article
Published: 20 October 2016
Journal of the Geological Society (2017) 174 (1): 1–9.
...Fig. 2. ( a ) Schematic stratigraphic log of the Cedarberg Formation showing the lower and upper contacts with the glacial Pakhuis and braided fluvial Goudini Formations, respectively. The upward-coarsening Cedarberg Formation is subdivided into the lower Soom and Upper Disa Members, both...
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Journal Article
Published: 01 January 2013
Reviews in Mineralogy and Geochemistry (2013) 75 (1): 289–322.
... with polymerized structures ( Boulard et al. 2011 ). The formation of CO 4 4− at high-pressure was predicted ( Genge 1994 ) because it is compatible with the similar electronic configurations of C and Si, which satisfy the requirements of both sp 2 (trigonal) and sp 3 (tetrahedral) hybridization...
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Journal Article
Published: 01 September 2016
South African Journal of Geology (2016) 119 (3): 545–568.
... ), and reclassification of basement rocks to the Cape Supergroup ( Gresse et al., 2006 ), it is evident the foothills of the Groot Swartberge north of the trench site are composed mainly of Cambrian-aged Schoongezicht Formation of the Kansa Group ( Table 1 ). These rocks were derived from gradual uncovering of sodium...
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