Geology and tectonostratigraphy of the Onverwacht Suite, Barberton greenstone belt, South Africa

MJ de Wit, H Furnes, B Robins - Precambrian Research, 2011 - Elsevier
A synthesis of new and existing data reveals that at least seven major shear zones and an
unconformity separate the rocks of the southern Barberton Greenstone Belt into seven units …

Reassessing the biogenicity of Earth's oldest trace fossil with implications for biosignatures in the search for early life

EG Grosch, N McLoughlin - Proceedings of the National Academy of …, 2014 - pnas.org
Microtextures in metavolcanic pillow lavas from the Barberton greenstone belt of South
Africa have been argued to represent Earth's oldest trace fossil, preserving evidence for …

Paleoarchean detrital zircon ages from the earliest tectonic basin in the Barberton Greenstone Belt, Kaapvaal craton, South Africa

EG Grosch, J Kosler, N McLoughlin, K Drost… - Precambrian …, 2011 - Elsevier
Detrital zircon grains in coarse-grained sedimentary rocks of the Noisy
formation,(traditionally considered as the H6 unit of the uppermost Hooggenoeg Formation) …

P–T Constraints on the Metamorphic Evolution of the Paleoarchean Kromberg Type-Section, Barberton Greenstone Belt, South Africa

EG Grosch, O Vidal, T Abu-Alam… - Journal of …, 2012 - academic.oup.com
Low-grade metabasites and hydrothermally altered ultramafic rocks form most of the
Paleoarchean Barberton Greenstone Belt (BGB) of South Africa. However, P–T constraints …

Evidence for 3.3-billion-year-old oceanic crust in the Barberton greenstone belt, South Africa

EG Grosch, J Slama - Geology, 2017 - pubs.geoscienceworld.org
Recognition of oceanic crust in Archean greenstone belts has remained a controversial and
unresolved issue, with implications for understanding early Earth geodynamics. In the …

Microbes, mineral evolution, and the rise of microcontinents—origin and coevolution of life with early earth

EG Grosch, RM Hazen - Astrobiology, 2015 - liebertpub.com
Earth is the most mineralogically diverse planet in our solar system, the direct consequence
of a coevolving geosphere and biosphere. We consider the possibility that a microbial …

A hierarchical system for evaluating the biogenicity of metavolcanic-and ultramafic-hosted microalteration textures in the search for extraterrestrial life

N McLoughlin, EG Grosch - Astrobiology, 2015 - liebertpub.com
The low-temperature alteration of submarine volcanic glasses has been argued to involve
the activity of microorganisms, and analogous fluid-rock-microbial-mediated alteration has …

Paleoarchean sulfur cycle and biogeochemical surface conditions on the early Earth, Barberton, South Africa

EG Grosch, N McLoughlin - Earth and Planetary Science Letters, 2013 - Elsevier
This study presents the first multiple sulfur isotope dataset on sulfides from the ca. 3.5–3.2
Ga Onverwacht Group in the Paleoarchean Barberton Greenstone Belt (BGB) of South …

Microscale map** of alteration conditions and potential biosignatures in basaltic-ultramafic rocks on early Earth and beyond

EG Grosch, N McLoughlin, P Lanari, M Erambert… - Astrobiology, 2014 - liebertpub.com
Subseafloor environments preserved in Archean greenstone belts provide an analogue for
investigating potential subsurface habitats on Mars. The c. 3.5–3.4 Ga pillow lava …

Metamorphic processes preserved in early Archean supracrustal rocks of the Barberton Greenstone Belt, South Africa

EG Grosch - Geological Society, London, Special Publications, 2019 - lyellcollection.org
The Palaeoarchean supracrustal rocks of the Barberton Greenstone Belt (BGB) consist of
hydrothermally altered volcanic and silicified sedimentary rocks that form the dramatic …