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  Operational Report about drilling in the Moodies Group of the Barberton Greenstone Belt (BASE – Barberton Archean Surface Environments)

Heubeck, C., Beukes, N., Homann, M., Javaux, E. J., Kakegawa, T., Lalonde, S., Mason, P., Tice, M., Mashele, P., Paprika, D., Rippon, C., Tucker, R., Tucker, R., Ndazamo, V., Christianson, A., Kunkel, C. (2024): Operational Report about drilling in the Moodies Group of the Barberton Greenstone Belt (BASE – Barberton Archean Surface Environments), (ICDP Operational Report), Potsdam : International Continental Scientific Drilling Program, GFZ German Research Centre for Geosciences, 74 p.
https://doi.org/10.48440/ICDP.5069.001

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025554 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025554_3
Genre: Report

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This work is licensed under a Creative Commons Attribution 4.0 International License. (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
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https://doi.org/XXXXXXXXXXXX (Supplementary material)
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Referencing Article: Heubeck, C., Beukes, N., de Kock, M., Homann, M., Javaux, E. J., Kakegawa, T., Lalonde, S., Mason, P., Tice, M., Mashele, P., Paprika, D., Rippon, C., Tucker, R., Tucker, R., Ndazamo, V., Christianson, A., Kunkel, C. (2024). BASE - Drilling Paleoarchean coastal strata of the Barberton Greenstone Belt, Sci-entific Drilling, XX, https://doi.org/XXXXXXXXXXXX
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https://doi.org/10.48440/ICDP.5069.002 (Supplementary material)
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Supplementary Data: Heubeck, C., Beukes, N., de Kock, M., Homann, M., Javaux, E. J., Kakegawa, T., Lalonde, S., Mason, P., Tice, M., Mashele, P., Paprika, D., Rippon, C., Tucker, R., Tucker, R., Ndazamo, V., Christianson, A., Kunkel, C. (2024). Explanatory Remarks on the Operational Dataset about Drilling in the Moodies Group of the Barberton Greenstone Belt (BASE – Barberton Archean Surface Environments), https://doi.org/10.48440/ICDP.5069.002
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https://doi.org/10.5880/ICDP.5069.001 (Supplementary material)
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Supplementary Data: Heubeck, C., Beukes, N., Homann, M., Javaux, E. J., Kakegawa, T., Lalonde, S., Mason, P., Tice, M., Mashele, P., Paprika, D., Rippon, C., Tucker, R., Tucker, R., Ndazamo, V., Christianson, A., Kunkel, C. (2024). Operational Dataset about drilling in the Moodies Group of the Barberton Greenstone Belt (BASE – Barberton Archean Surface Environments), https://doi.org/10.5880/ICDP.5069.001

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 Creators:
Heubeck, C.1, Author
Beukes, N.1, Author
Homann, M.1, Author
Javaux, E. J.1, Author
Kakegawa, T.1, Author
Lalonde, S.1, Author
Mason, P.1, Author
Tice, M.1, Author
Mashele, P.1, Author
Paprika, D.1, Author
Rippon, C.1, Author
Tucker, Rodney1, Author
Tucker, Ryan1, Author
Ndazamo, V.1, Author
Christianson, A.1, Author
Kunkel, Cindy1, 2, Author              
Affiliations:
1ICDP Operational Report, ICDP, External Organizations, , , ou_1826888              
24.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146035              

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 Abstract: The BASE (Barberton Archean Surface Environments) scientific drilling project focused on recovering unweathered continuous core through strata of the Paleoarchean Moodies Group (ca. 3.2 Ga), central Barberton Greenstone Belt (BGB), South Africa. They comprise some of the oldest well-preserved sedimentary strata on Earth, deposited within only a few million years in alluvial, fluvial, coastal-deltaic, tidal, and prodeltaic settings and represent a very-high-resolution record of Paleoarchean surface conditions and processes. Moodies Group strata consist of polymict conglomerates, widespread quartzose, lithic and arkosic sand-stones, siltstones, shales, and rare BIFs and jaspilites, interbedded with tuffs and several thin lavas. This report describes operations from preparations to the sampling workshop and complements the related scientific report. Eight inclined boreholes between 280 and 495 m length, drilled during November 2021 through July 2022, obtained a total of 2903 m of curated core of variable quality through steeply to subvertically dipping, in part overturned stratigraphic sections. All drilling objec-tives were reached. Boreholes encountered a variety of conglomerates, diverse and abun-dant, mostly tuffaceous sandstones, rhythmically laminated shale-siltstone and banded-iron formations, and several horizons of early-diagenetic sulfate concretions. Oxidative weather-ing reached far deeper than expected; fracturing was more intense, and BIFs and jaspilites were thicker than anticipated. Two km-long mine adits and a water tunnel, traversing four thick stratigraphic sections within the upper Moodies Group in the central BGB, were also sampled. All boreholes were logged by geophysical instruments. Core was processed (ori-ented, slabbed, photographed, described, and archived) in a large, publicly accessible hall in downtown Barberton. An exhibition provided background explanations for visitors and relat-ed the drilling objectives to the recently established Barberton-Makhonjwa Mountains World Heritage Site. A substantial education, outreach and publicity program addressed the information needs of the local population and of local and regional stakeholders.

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Language(s): eng - English
 Dates: 20242024
 Publication Status: Finally published
 Pages: 74
 Publishing info: Potsdam : International Continental Scientific Drilling Program, GFZ German Research Centre for Geosciences
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.48440/ICDP.5069.001
 Degree: -

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Title: ICDP Operational Report
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