2D grain size data of sandstones from the 3.2 Ga old Moodies Group, Barberton Greenstone Belt (South Africa)

Reimann, Sebastian; Zametzer, Andreas; Heubeck, Christoph;

2023 || GFZ Data Services

The Moodies Group (ca. 3.22-3.21 Ga) of the Barberton Greenstone Belt (BGB), South Africa, is the uppermost and youngest unit of the BGB, the largest and best-preserved Greenstone belt in the basement of the Kaapvaal Craton. It consists predominantly of fine- to coarse-grained, composi-tionally immature to mature, quartzose sandstones up to 3.6 km thick, with significant units of con-glomerates and siltstones and minor volcanic rocks and ferruginous sediments. The quartz-dominated Moodies sandstones mark long-term, large-scale access of surface systems to crust-stabilizing, high-level granitoid igneous rocks.

47 petrographic thin sections of sandstones from these sandstone units were analyzed for 2D grain size analyses. At least 500 measurements of long axes per thin were taken, using a Keyence VHX-6000 digital microscope. Samples which show significant grain boundary migration and subgrain rotation were excluded from this analysis (Passchier and Trouw, 2005). The data are presented as single ASCII file (tab-delimited text). The file 2022-023_Reimann-et-al_2D-grain-size-data.txt contains measurements of grains long axes from thin sections.

Originally assigned keywords

Corresponding MSL vocabulary keywords

MSL enriched keywords

MSL enriched sub domains
  • microscopy and tomography
Source http://dx.doi.org/10.5880/fidgeo.2022.023
Source publisher GFZ Data Services
DOI 10.5880/fidgeo.2022.023
Authors
  • Zametzer, Andreas
  • 0000-0002-5700-3638
  • Friedrich-Schiller-Universität Jena, Jena, Germany; Timescales of Mineral Systems Group, The Institute for Geoscience Research (TIGeR), Curtin University, Perth, Australia;
Contributors
  • Reimann, Sebastian
  • ContactPerson
  • 0000-0001-9484-5044
  • Friedrich-Schiller-Universität Jena, Jena, Germany;
  • Zametzer, Andreas
  • ProjectMember
  • 0000-0002-5700-3638
  • Friedrich-Schiller-Universität Jena, Jena, Germany; Timescales of Mineral Systems Group, The Institute for Geoscience Research (TIGeR), Curtin University, Perth, Australia;
  • Heubeck, Christoph
  • Supervisor
  • 0000-0002-2632-2644
  • Friedrich-Schiller-Universität Jena, Jena, Germany;
  • Reimann, Sebastian
  • ContactPerson
  • Friedrich-Schiller-Universität Jena, Jena, Germany;
References
  • Zametzer, A., Reimann, S., Heubeck, C. E., Thomsen, T. B., & Serre, S. H. (2023). Tectonic and sedimentary evolution of a potential supra-detachment fault basin, Archaean Moodies Group (~3.22 Ga), central Barberton Greenstone Belt. South African Journal of Geology, 126(3), 235–260. https://doi.org/10.25131/sajg.126.0016
  • 10.25131/sajg.126.0016
  • IsSupplementTo
  • Cites
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  • 10.1306/74D70646-2B21-11D7-8648000102C1865D
  • Cites
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  • 10.1111/j.1365-2818.1985.tb02607.x
  • Cites
  • J. A. Harrell, K. A. Eriksson. (1979). Empirical Conversion Equations for Thin-Section and Sieve Derived Size Distribution Parameters. SEPM Journal of Sedimentary Research, Vol. 49. https://doi.org/10.1306/212f7711-2b24-11d7-8648000102c1865d
  • 10.1306/212F7711-2B24-11D7-8648000102C1865D
  • Cites
  • Kellerhals, R., Shaw, J., & Arora, V. K. (1975). On Grain Size from Thin Sections. The Journal of Geology, 83(1), 79–96. https://doi.org/10.1086/628046
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  • Cites
Contact
  • Reimann, Sebastian
  • Friedrich-Schiller-Universität Jena, Jena, Germany;
  • Reimann, Sebastian
  • Friedrich-Schiller-Universität Jena, Jena, Germany;
Citation Reimann, S., Zametzer, A., & Heubeck, C. (2023). 2D grain size data of sandstones from the 3.2 Ga old Moodies Group, Barberton Greenstone Belt (South Africa) [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2022.023
Geo location(s)
  • Barberton Greenstone Belt
Spatial coordinates
  • eLong 31.3198
  • nLat -25.7596
  • sLat -25.9499
  • wLong 31.0286