Iron formations: A global record of Neoarchaean to Palaeoproterozoic environmental history
Iron formations (IF) represent an iron-rich rock type that typifies many Archaean and
Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …
Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …
The Neoproterozoic oxygenation event: Environmental perturbations and biogeochemical cycling
LM Och, GA Shields-Zhou - Earth-Science Reviews, 2012 - Elsevier
The oxygen content of the Earth's surface environment is thought to have increased in two
broad steps: the Great Oxygenation Event (GOE) around the Archean–Proterozoic boundary …
broad steps: the Great Oxygenation Event (GOE) around the Archean–Proterozoic boundary …
Estimating the timing of early eukaryotic diversification with multigene molecular clocks
Although macroscopic plants, animals, and fungi are the most familiar eukaryotes, the bulk
of eukaryotic diversity is microbial. Elucidating the timing of diversification among the more …
of eukaryotic diversity is microbial. Elucidating the timing of diversification among the more …
Iron formation: the sedimentary product of a complex interplay among mantle, tectonic, oceanic, and biospheric processes
A Bekker, JF Slack, N Planavsky… - Economic …, 2010 - pubs.geoscienceworld.org
Iron formations are economically important sedimentary rocks that are most common in
Precambrian sedimentary successions. Although many aspects of their origin remain …
Precambrian sedimentary successions. Although many aspects of their origin remain …
The geologic time scale
FM Gradstein, JG Ogg, MD Schmitz, GM Ogg - Boston, USA, 2012 - books.google.com
Construction and assembly of the Geologic Time Scale involves:(a) constructing a relative
(chronostratigraphic) standard scale for key periods in the Earth's rock record;(b) identifying …
(chronostratigraphic) standard scale for key periods in the Earth's rock record;(b) identifying …
[图书][B] Geomicrobiology
HL Ehrlich, DK Newman - 2008 - taylorfrancis.com
Uncovers the Key Role Microbes Play in the Transformation of Oxidizable and Reducible
MineralsMany areas of geomicrobial processes are receiving serious attention from …
MineralsMany areas of geomicrobial processes are receiving serious attention from …
Tectonic model for the Proterozoic growth of North America
SJ Whitmeyer, KE Karlstrom - Geosphere, 2007 - pubs.geoscienceworld.org
This paper presents a plate-scale model for the Precambrian growth and evolution of the
North American continent. The core of the North American continent (Canadian shield) came …
North American continent. The core of the North American continent (Canadian shield) came …
Rare earth element and yttrium compositions of Archean and Paleoproterozoic Fe formations revisited: new perspectives on the significance and mechanisms of …
The ocean and atmosphere were largely anoxic in the early Precambrian, resulting in an Fe
cycle that was dramatically different than today's. Extremely Fe-rich sedimentary deposits …
cycle that was dramatically different than today's. Extremely Fe-rich sedimentary deposits …
Iron isotope constraints on the Archean and Paleoproterozoic ocean redox state
The response of the ocean redox state to the rise of atmospheric oxygen about 2.3 billion
years ago (Ga) is a matter of controversy. Here we provide iron isotope evidence that the …
years ago (Ga) is a matter of controversy. Here we provide iron isotope evidence that the …
Large colonial organisms with coordinated growth in oxygenated environments 2.1 Gyr ago
The evidence for macroscopic life during the Palaeoproterozoic era (2.5–1.6 Gyr ago) is
controversial,,,,. Except for the nearly 2-Gyr–old coil-shaped fossil Grypania spiralis,, which …
controversial,,,,. Except for the nearly 2-Gyr–old coil-shaped fossil Grypania spiralis,, which …