The archean atmosphere
DC Catling, KJ Zahnle - Science advances, 2020 - science.org
The atmosphere of the Archean eon—one-third of Earth's history—is important for
understanding the evolution of our planet and Earth-like exoplanets. New geological proxies …
understanding the evolution of our planet and Earth-like exoplanets. New geological proxies …
Orogenic gold: Common or evolving fluid and metal sources through time
RJ Goldfarb, DI Groves - Lithos, 2015 - Elsevier
Orogenic gold deposits of all ages, from Paleoarchean to Tertiary, show consistency in
chemical composition. They are the products of aqueous-carbonic fluids, with typically 5–20 …
chemical composition. They are the products of aqueous-carbonic fluids, with typically 5–20 …
A re-assessment of elemental proxies for paleoredox analysis
Paleoredox conditions are commonly evaluated based on elemental proxies but, despite
their frequency of use, most of these proxies have received little comparative evaluation or …
their frequency of use, most of these proxies have received little comparative evaluation or …
A holistic model for the origin of orogenic gold deposits and its implications for exploration
The term orogenic gold deposits has been widely accepted, but there has been continuing
debate on their genesis. Early syn-sedimentary or syn-volcanic models and hydrothermal …
debate on their genesis. Early syn-sedimentary or syn-volcanic models and hydrothermal …
Timing the evolution of antioxidant enzymes in cyanobacteria
The ancestors of cyanobacteria generated Earth's first biogenic molecular oxygen, but how
they dealt with oxidative stress remains unconstrained. Here we investigate when …
they dealt with oxidative stress remains unconstrained. Here we investigate when …
Trace element content of sedimentary pyrite in black shales
Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) analyses of
1,407 sedimentary (diagenetic and syngenetic) pyrites from 45 carbonaceous shale and …
1,407 sedimentary (diagenetic and syngenetic) pyrites from 45 carbonaceous shale and …
Oceanic oxygenation events in the anoxic Ediacaran ocean
The ocean‐atmosphere system is typically envisioned to have gone through a unidirectional
oxygenation with significant oxygen increases in the earliest (ca. 635 Ma), middle (ca. 580 …
oxygenation with significant oxygen increases in the earliest (ca. 635 Ma), middle (ca. 580 …
The behavior of trace elements in seawater, sedimentary pore water, and their incorporation into carbonate minerals: a review
Trace elements are actively cycled in seawater, are essential components for marine life,
and are transported to the seafloor where they can become enriched in marine sediments …
and are transported to the seafloor where they can become enriched in marine sediments …
Signatures of early microbial life from the Archean (4 to 2.5 Ga) eon
K Lepot - Earth-Science Reviews, 2020 - Elsevier
Abstract The Archean era (4 to 2.5 billion years ago, Ga) yielded rocks that include the
oldest conclusive traces of life as well as many controversial occurrences. Carbonaceous …
oldest conclusive traces of life as well as many controversial occurrences. Carbonaceous …
Geochemical and micro-textural fingerprints of boiling in pyrite
The chemical composition, textures and mineral associations of pyrite provide key
information that help elucidate the evolution of hydrothermal systems. However, linking the …
information that help elucidate the evolution of hydrothermal systems. However, linking the …