A Cenozoic Record of Deep Oceanic Zn Isotopic Composition in Ferromanganese Crusts
M Zhao, N Planavsky, X Wang, Y Zhang… - American Journal of …, 2023 - ajsonline.org
Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …
Redox changes in the outer Yangtze Sea (South China) through the Hirnantian Glaciation and their implications for the end-Ordovician biocrisis
Two pulses of faunal mortality occurred during the Late Ordovician mass extinction (ca. 445
Ma). This biocrisis is recorded in Hirnantian strata of South China as a stepwise extinction of …
Ma). This biocrisis is recorded in Hirnantian strata of South China as a stepwise extinction of …
A 200-million-year delay in permanent atmospheric oxygenation
The rise of atmospheric oxygen fundamentally changed the chemistry of surficial
environments and the nature of Earth's habitability. Early atmospheric oxygenation occurred …
environments and the nature of Earth's habitability. Early atmospheric oxygenation occurred …
[HTML][HTML] Effective use of cerium anomalies as a redox proxy in carbonate-dominated marine settings
Rare earth elements and yttrium (REY) have a distinct distribution pattern in seawater, and
this pattern may be faithfully preserved in carbonate sediments and rocks. Anomalous …
this pattern may be faithfully preserved in carbonate sediments and rocks. Anomalous …
The iron paleoredox proxies: A guide to the pitfalls, problems and proper practice
Oceanic anoxia—including euxinic settings defined by the presence of water column
hydrogen sulfide (H2S)—is minor in the ocean today. Such conditions, however, were …
hydrogen sulfide (H2S)—is minor in the ocean today. Such conditions, however, were …
Ocean euxinia and climate change “double whammy” drove the Late Ordovician mass extinction
C Zou, Z Qiu, SW Poulton, D Dong, H Wang… - …, 2018 - pubs.geoscienceworld.org
Abstract The Late Ordovician mass extinction (LOME, ca. 445 Ma) was the first of the “Big
Five” Phanerozoic extinction events and comprised two extinction pulses. Proposed kill …
Five” Phanerozoic extinction events and comprised two extinction pulses. Proposed kill …
A highly redox-heterogeneous ocean in South China during the early Cambrian (∼ 529–514 Ma): Implications for biota-environment co-evolution
Abstract The “Cambrian Explosion” is known for rapid increases in the morphological
disparity and taxonomic diversity of metazoans. It has been widely proposed that this …
disparity and taxonomic diversity of metazoans. It has been widely proposed that this …
Earth's Great Oxidation Event facilitated by the rise of sedimentary phosphorus recycling
The rise of atmospheric oxygen during the Great Oxidation Event some 2.4 billion years ago
was a defining transition in the evolution of global biogeochemical cycles and life on Earth …
was a defining transition in the evolution of global biogeochemical cycles and life on Earth …
Oxygenation of the Mesoproterozoic ocean and the evolution of complex eukaryotes
Abstract The Mesoproterozoic era (1,600–1,000 million years ago (Ma)) has long been
considered a period of relative environmental stasis, with persistently low levels of …
considered a period of relative environmental stasis, with persistently low levels of …
[HTML][HTML] A global reassessment of the controls on iron speciation in modern sediments and sedimentary rocks: A dominant role for diagenesis
The speciation of iron in sediments and sedimentary rocks is a widely used proxy for the
chemistry and oxidation state of ancient water bodies. Specifically, the fraction of reactive …
chemistry and oxidation state of ancient water bodies. Specifically, the fraction of reactive …