Iron formations (IF) represent an iron-rich rock type that typifies many Archaean and
Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …

Abstract The Himalayan Orogen consists of two rock packages that parallel the topographic
trend of the mountain belt between the eastern and western syntaxes. To avoid confusion …

The oxygen isotope composition (δ18O) of marine sedimentary rocks has increased by 10 to
15 per mil since Archean time. Interpretation of this trend is hindered by the dual control of …

The oxygenation of Earth's surface environment dramatically altered key biological and
geochemical cycles and ultimately ushered in the rise of an ecologically diverse biosphere …

Evidence in palaeosols suggests that life on land dates back to at least 2.76 Gyr ago,.
However, the biogeochemical effects of Archaean terrestrial life are thought to have been …

Abstract The Paleoproterozoic Kilohigok foreland basin formed on the Archean Slave craton
in response to 2.02–1.90 Ga collision in the adjacent Thelon tectonic zone (Ttz), the …

Abstract In Cambrian time, Laurentia was bounded on all sides by passive margins,
providing an opportunity to establish a “Cambrian baseline” of detrital zircon provenance for …

Abstract The Paleoproterozoic Wernecke Supergroup of Yukon was deposited when the
northwestern margin of Laurentia was undergoing major adjustments related to the …

Abstract The Orosirian Period (2050–1800 Ma) of the Paleoproterozoic Era represents an
interval between the Great Oxidation Event and Lomagundi-Jatuli Excursion, and the …

Abstract Here we present Re-Os geochronological data from two carbonaceous shale units
from the Hornby Bay and Amundsen basins that provide important chronological markers for …