[HTML][HTML] Unmixing biogenic and terrigenous magnetic mineral components in red clay of the Pacific Ocean using principal component analyses of first-order reversal …

T Yamazaki, W Fu, T Shimono, Y Usui - Earth, Planets and Space, 2020 - Springer
Red clay widely occupies the seafloor of pelagic environments in middle latitudes, and
potentially preserves long paleoceanographic records. We conducted a rock-magnetic study …

Changing abundance of magnetofossil morphologies in pelagic red clay around Minamitorishima, Western North Pacific

Y Usui, T Yamazaki, M Saitoh - Geochemistry, Geophysics …, 2017 - Wiley Online Library
Recent investigations have discovered an unexpected abundance of magnetofossils in oxic
pelagic red clays. These have potential to serve as paleoenvironmental tracers in otherwise …

Environmental rock‐magnetism of Cenozoic red clay in the South Pacific Gyre

T Shimono, T Yamazaki - Geochemistry, Geophysics …, 2016 - Wiley Online Library
Nonfossiliferous red clay can be used for elucidating long‐range environmental changes,
although such studies were limited so far because of the difficulty in precise age estimation …

The impact of oxic alteration on plume-derived transition metals in ridge flank sediments from the East Pacific Rise

RM Dunk, RA Mills - Marine geology, 2006 - Elsevier
We describe transition metal behaviour during early diagenesis in sediments collected
along a transect across the eastern flank of the East Pacific Rise (EPR) at 14° S overlying …

Environmental magnetism of Pleistocene sediments in the North Pacific and Ontong‐Java Plateau: Temporal variations of detrital and biogenic components

T Yamazaki - Geochemistry, Geophysics, Geosystems, 2009 - Wiley Online Library
An environmental magnetic study was conducted to investigate temporal variations of the
sources of magnetic minerals in the Pacific Ocean using sediment cores of Pleistocene age …

Impact of climate change on the magnetic mineral assemblage in marine sediments from Izu rear arc, NW Pacific Ocean, over the last 1 Myr

M Kars, RJ Musgrave, K Kodama, AS Jonas… - Palaeogeography …, 2017 - Elsevier
A rock magnetic study was conducted on upper Pleistocene marine sediments from
International Ocean Discovery Program Expedition 350 Site U1437 in order to highlight the …

Paleoposition of the Intertropical Convergence Zone in the eastern Pacific inferred from glacial-interglacial changes in terrigenous and biogenic magnetic mineral …

T Yamazaki - Geology, 2012 - pubs.geoscienceworld.org
Magnetic properties are increasingly used for paleoclimatic and paleoceanographic studies.
Utilizing recently developed proxies, an environmental magnetic study was conducted on …

Long-term secular variation of the geomagnetic field during the last 200 kyr recorded in sediment cores from the western equatorial Pacific

T Yamazaki, N Ioka - Earth and Planetary Science Letters, 1994 - Elsevier
We have conducted a paleomagnetic study of five hemipelagic-clay cores of 4–7 m in length
obtained from the West Caroline Basin, western equatorial Pacific. The purpose of this study …

Diagenetic modification of magnetic properties observed in a piston core (MD01–2407) from the Oki Ridge, Japan Sea

A Hayashida, S Hattori, H Oda - Palaeogeography, Palaeoclimatology …, 2007 - Elsevier
We investigated the magnetic properties of u-channel samples from a giant piston core
(IMAGES MD01–2407), in order to obtain high-resolution records of past geomagnetic field …

Non‐chained, non‐interacting, stable single‐domain magnetite octahedra in deep‐sea red clay: A new type of magnetofossil?

Y Usui, T Yamazaki - Geochemistry, Geophysics, Geosystems, 2021 - Wiley Online Library
Magnetic detection and classification of magnetofossils have been proposed as potential
tools for paleoenvironmental studies. Magnetosomes in bacterial species living in different …