Geological features and resource potential of deep-sea mud highly enriched in rare-earth elements in the Central Pacific Basin and the Penrhyn Basin

J Ohta, K Yasukawa, K Nakamura, K Fu**aga… - Ore Geology …, 2021 - Elsevier
Deep-sea mud enriched in rare-earth elements and yttrium (REY-rich mud) has been
recognized as a new resource for REY and scandium (Sc). Recently, highly REY-rich mud …

Aerobic microbial life persists in oxic marine sediment as old as 101.5 million years

Y Morono, M Ito, T Hoshino, T Terada, T Hori… - Nature …, 2020 - nature.com
Sparse microbial populations persist from seafloor to basement in the slowly accumulating
oxic sediment of the oligotrophic South Pacific Gyre (SPG). The physiological status of these …

Geochemical approaches to the quantification of dispersed volcanic ash in marine sediment

RP Scudder, RW Murray, JC Schindlbeck… - Progress in Earth and …, 2016 - Springer
Volcanic ash has long been recognized in marine sediment, and given the prevalence of
oceanic and continental arc volcanism around the globe in regard to widespread transport of …

An early Miocene extinction in pelagic sharks

EC Sibert, LD Rubin - Science, 2021 - science.org
Shark populations have been decimated in recent decades because of overfishing and
other anthropogenic stressors; however, the long-term impacts of such changes in marine …

Cenozoic global cooling and increased seawater Mg/Ca via reduced reverse weathering

AG Dunlea, RW Murray, DP Santiago Ramos… - Nature …, 2017 - nature.com
Authigenic clay minerals formed on or in the seafloor occur in every type of marine sediment.
They are recognized to be a major sink of many elements in the ocean but are difficult to …

Statistic and isotopic characterization of deep‐sea sediments in the Western North Pacific Ocean: Implications for genesis of the sediment extremely enriched in rare …

K Yasukawa, J Ohta, T Miyazaki… - Geochemistry …, 2019 - Wiley Online Library
A certain type of deep‐sea sediment exhibits very high content of rare earth elements and
yttrium (REY) and is therefore expected to serve as a novel resource for these industrially …

Slow closure of Earth's carbon cycle

DH Rothman - Proceedings of the National Academy of Sciences, 2024 - pnas.org
Carbon near the Earth's surface cycles between the production and consumption of organic
carbon; the former sequesters carbon dioxide while the latter releases it. Microbes attempt to …

Dust, volcanic ash, and the evolution of the South Pacific Gyre through the Cenozoic

AG Dunlea, RW Murray, J Sauvage… - …, 2015 - Wiley Online Library
We examine the 0–100 Ma paleoceanographic record retained in pelagic clay from the
South Pacific Gyre (SPG) by analyzing 47 major, trace, and rare earth elements in bulk …

Dynamics of oceanic iron prior to the Great Oxygenation Event

F Thibon, J Blichert-Toft, H Tsikos, J Foden… - Earth and Planetary …, 2019 - Elsevier
We report Fe isotope compositions in banded iron formations (BIF) from three cores from the
pre-GOE Transvaal Supergroup, South Africa, and one core from the pre-GOE Joffre …

Radiolytic hydrogen production in the subseafloor basaltic aquifer

ME Dzaugis, AJ Spivack, AG Dunlea… - Frontiers in …, 2016 - frontiersin.org
Hydrogen (H2) is produced in geological settings by dissociation of water due to radiation
from radioactive decay of naturally occurring uranium (238U, 235U), thorium (232Th) and …