Tectonic evolution of the Late Archaean Pongola-Mozaan basin, South Africa

Gold, D.J.C.; Veh, M.W. von

doi:10.1016/0899-5362(95)00069-6

Cited by 15 publications

(2 citation statements)

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“…The samples collected for this study are from parallel to bedding laminated sandstones from the Sinqueni and Ntombe Formations of the 2.9 Ga Pongola Supergroup. The sandstones are part of a shallow marine sedimentary succession that was deposited in the Witwatersrand Basin of the Kaapvaal Craton 25, 26. The 600 m thick Sinqueni formation is divided into three units: the 330 m thick basal quartzite Dipka member, overlain by the 80 m thick shale Ijzermijn member, and the quartzite Kwaaimam member at the top.…”

Section: Methodsmentioning

confidence: 99%

“…The sandstones are part of a shallow marine sedimentary succession that was deposited in the Witwatersrand Basin of the Kaapvaal Craton. [25,26] The 600 m thick Sinqueni formation is divided into three units: the 330 m thick basal quartzite Dipka member, overlain by the 80 m thick shale Ijzermijn member, and the quartzite Kwaaimam member at the top. The Ijzermijn member also contains a 5 m thick banded iron formation.…”

Section: Experimental Samplesmentioning

confidence: 99%

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Micro‐Raman spectroscopic investigations of mineral assemblages in parallel to bedding laminae in 2.9 Ga sandstones of the Pongola Supergroup, South Africa

Bower

2011

J Raman Spectroscopy

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Laminated sandstones from the 2.9 Ga Pongola Supergroup, South Africa, were characterized using micro-Raman spectral imaging to elucidate the origin of the mineral components. These sandstones were formed in a paleoenvironment conducive to sustaining life and contain compelling features reminiscent of ancient microbial mat remains. Most sedimentary rocks of this age have been altered over time through metamorphism and weathering, obscuring any original biologic or mineralogic signatures. Therefore, determination of the exact formation mechanism for biologically associated features is often precluded, resulting in large gaps in our understanding of early life and Earth's early habitable environments. The results of the Raman analyses show that the parallel to bedding laminations in these rocks consist of elongated muscovite grains that are intimately associated with anatase, rutile, goethite, and graphitic carbon. The morphology, orientation, and intimate associations of the component mineral assemblage in the laminations suggest that physiochemical events, such as weathering, low-grade metamorphism, or hydrothermal fluids, were also key in their formation and influenced their geochemical makeup. Given the complicated histories of ancient sedimentary rocks, the use of techniques such as micro-Raman spectroscopy is crucial in determining the origins of sedimentary structures that might otherwise be misinterpreted.

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Section: Methodsmentioning

confidence: 99%

Section: Experimental Samplesmentioning

confidence: 99%

Micro‐Raman spectroscopic investigations of mineral assemblages in parallel to bedding laminae in 2.9 Ga sandstones of the Pongola Supergroup, South Africa

Bower

2011

J Raman Spectroscopy

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The Pongola Supergroup: Mesoarchaean Deposition Following Kaapvaal Craton Stabilization

Luskin

Wilson

Gold³

et al. 2019

Regional Geology Reviews

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Pressure, temperature, and timing of mineralization of the sedimentary rock-hosted orogenic gold deposit at Klipwal, southeastern Kaapvaal Craton, South Africa

et al. 2015

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Tectonic evolution of the Late Archaean Pongola-Mozaan basin, South Africa

Cited by 15 publications

References 10 publications

Micro‐Raman spectroscopic investigations of mineral assemblages in parallel to bedding laminae in 2.9 Ga sandstones of the Pongola Supergroup, South Africa

Micro‐Raman spectroscopic investigations of mineral assemblages in parallel to bedding laminae in 2.9 Ga sandstones of the Pongola Supergroup, South Africa

The Pongola Supergroup: Mesoarchaean Deposition Following Kaapvaal Craton Stabilization

Pressure, temperature, and timing of mineralization of the sedimentary rock-hosted orogenic gold deposit at Klipwal, southeastern Kaapvaal Craton, South Africa

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