SQUID-SIMS is a useful approach to uncover primary signals in the Archean sulfur cycle [PDF]
The Agouron Institute and National Aeronautic and Space Administration Exobiology Award NNX09AM91G supported this work.Many aspects of Earth's early sulfur cycle, from the origin of mass-anomalous fractionations to the degree of biological participation,
Guan, Yunbin +14 more
core +1 more source
Transfer functions used to interpret Archean paleosols.
Transfer functions used to interpret Archean paleosols.
Mark D. Schmitz (2843513) +1 more
core +1 more source
Creating Continents: Archean Cratons Tell the Story [PDF]
The record of the first two billion years of Earth’s history (the Archean) is notoriously incomplete, yet crust of this age is present on every continent.
Carol Frost +9 more
core +1 more source
The Sedimentary Origin of Black and White Banded Cherts of the Buck Reef, Barberton, South Africa
The Buck Reef is a 250−400 m thick sequence of banded black and white (B&W) cherts deposited ca. 3416 Ma ago in a shallow basin. We provide field, petrological and geochemical constraints on the chert-forming process and the origin of the ...
Morgane Ledevin +4 more
doaj +1 more source
2200 million years of crustal evolution: The Baltic Shield [PDF]
The crustal history of the Baltic shield is interpreted in the light of the plate tectonic concept. Five tectonic cycles, each characterized by special lithological and structural features, are distinguished: The Early Archean (> 2900 Ma), the Late ...
G. Gaál
doaj +1 more source
Drilling for the Archean Roots of Life and Tectonic Earth in the Barberton Mountains [PDF]
In the Barberton Scientific Drilling Program (BSDP) we successfully completed three drill holes in 2008 across strategically selected rock formations in the early Archean Barberton Greenstone Belt, South Africa.
Nicola McLoughlin +3 more
doaj +1 more source
The Abundance and Behavior of Viruses in Ancient Seawater and Modern Iron-rich Environments [PDF]
The proclivity of silica for ferric hydroxide sorption sites allows for an Archean iron cycle involving iron-silica co-precipitation and deposition of banded iron formations (BIF).
Liu, Hanna Ken-Yuin
core +1 more source
Chemical composition (wt %) of Archean paleosols by XRF.
Chemical composition (wt %) of Archean paleosols by XRF.
Mark D. Schmitz (2843513) +1 more
core +1 more source
Archean crust-mantle geodynamic regimes: A review
The crust-mantle dynamic system of the formation and evolution of the early Earth crust is a frontier field in current Earth Science. This paper mainly introduces the popular dynamic models, comprising the stagnant-lid, mantle plume, sagduction, dripping,
Shuwen Liu +7 more
doaj +1 more source
Rare-earth elements in the Archean iron formation and associated schists in Ukkolanvaara, Ilomantsi, SE Finland [PDF]
This study describes the La, Ce, Nd, Sm, Eu, Tb, Yb and Lu concentrations in six iron-formation rocks (Fetot >> 15 %), four ferriferous schists (Fetot ~ 10—15 %) and two schist interbeds of the Archean Ukkolanvaara iron formation, as well as in seven ...
K. Laajoki, S. Lavikainen
doaj +1 more source

