Siahi M, Hofmann A, Dixon J, Wilson A, Mayr C, Kapesi L (2024)
Publication Type: Journal article
Publication year: 2024
Book Volume: 411
Article Number: 107493
DOI: 10.1016/j.precamres.2024.107493
The Mesoarchaean Pongola Supergroup of South Africa hosts the oldest succession of stromatolitic carbonates deposited in an intracontinental setting. In this study, carbonates within two (tectono-) stratigraphic units in the Buffalo River inlier were investigated. Stratiform stromatolite and wave-ripple-laminated dolostone facies are the most common and are interpreted to have formed in a tide-dominated shallow-marine environment. Dolostones typically contain a large amount of siliciclastic detritus, and small domal stromatolites are commonly found scattered in subtidal sandstone facies. The carbonates experienced deformation and greenschist facies metamorphic conditions at peak temperatures of ∼ 450 ± 50 °C. Analyses for major, trace and rare earth elements (REEs) along with carbon, oxygen and strontium isotopes have been undertaken on the best-preserved samples. Their REE + Y distribution patterns reflect their marine origin, with positive La
APA:
Siahi, M., Hofmann, A., Dixon, J., Wilson, A., Mayr, C., & Kapesi, L. (2024). Pongola Supergroup dolostones from the Buffalo River inlier, South Africa: facies, composition and implications for Mesoarchaean carbonate deposition. Precambrian Research, 411. https://doi.org/10.1016/j.precamres.2024.107493
MLA:
Siahi, M., et al. "Pongola Supergroup dolostones from the Buffalo River inlier, South Africa: facies, composition and implications for Mesoarchaean carbonate deposition." Precambrian Research 411 (2024).
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