Geochemistry of silicate and oxide inclusions in sublithospheric diamonds

MJ Walter, AR Thomson… - Reviews in Mineralogy …, 2022 - pubs.geoscienceworld.org
Minerals included in diamonds provide direct information about the petrologic and chemical
environment of diamond crystallization. They record information relating to local and …

Role of water in dynamics of slabs and surrounding mantle

E Ohtani, T Ishii - Progress in Earth and Planetary Science, 2024 - Springer
Water bound to various hydrous minerals can be transported deep into the mantle by slab
subduction. Serpentine is one of most important hydrous minerals in the crust and shallow …

Superhydrous aluminous silica phases as major water hosts in high-temperature lower mantle

T Ishii, G Criniti, E Ohtani, N Purevjav… - Proceedings of the …, 2022 - National Acad Sciences
Water transported by subducted oceanic plates changes mineral and rock properties at high
pressures and temperatures, affecting the dynamics and evolution of the Earth's interior …

Evaluating the formation pressure of diamond‐hosted majoritic garnets: A machine learning majorite barometer

AR Thomson, SC Kohn, A Prabhu… - Journal of Geophysical …, 2021 - Wiley Online Library
Diamond‐hosted majoritic garnet inclusions provide unique insights into the Earth's deep,
and otherwise inaccessible, mantle. Compared with other types of mineral inclusions found …

Phase relations of harzburgite and MORB up to the uppermost lower mantle conditions: precise comparison with pyrolite by multisample cell high‐pressure …

T Ishii, H Kojitani, M Akaogi - Journal of Geophysical Research …, 2019 - Wiley Online Library
We determined phase relations of harzburgite and basalt (mid‐ocean ridge basalt, MORB)
at 12–28 GPa and 1600–2200° C with a large number of experiments using a multianvil …

Hemispheric geochemical dichotomy of the mantle is a legacy of austral supercontinent assembly and onset of deep continental crust subduction

MG Jackson, FA Macdonald - AGU Advances, 2022 - Wiley Online Library
Oceanic hotspots with extreme enriched mantle radiogenic isotopic signatures—including
low 143Nd/144Nd indicative of subducted continental crust—are linked to plume conduits …

Metamorphic densification can account for the missing felsic crust of the Greater Indian continent

Y Wang, L Zhang, ZH Li - Communications Earth & Environment, 2022 - nature.com
The long-duration, fast convergence, and imbalance of crustal mass in the India-Asia
collisional system challenge the classical rules of continental dynamics. Here, we calculate …

Continental deep subduction versus subduction cessation: the fate of collisional orogens

Y Wang, ZH Li, P Huangfu - Tectonics, 2023 - Wiley Online Library
The contrasting fates of collisional orogens, that is, continental deep subduction or
subduction cessation, are widely recognized by petrological, paleomagnetic and …

Diamond formation in the deep lower mantle: a high-pressure reaction of MgCO3 and SiO2

F Maeda, E Ohtani, S Kamada, T Sakamaki, N Hirao… - Scientific Reports, 2017 - nature.com
Diamond is an evidence for carbon existing in the deep Earth. Some diamonds are
considered to have originated at various depth ranges from the mantle transition zone to the …

Tissintite,(Ca, Na,□) AlSi2O6, a highly-defective, shock-induced, high-pressure clinopyroxene in the Tissint martian meteorite

C Ma, O Tschauner, JR Beckett, Y Liu… - Earth and Planetary …, 2015 - Elsevier
Tissintite is a new vacancy-rich, high-pressure clinopyroxene, with a composition essentially
equivalent to plagioclase. It was discovered in maskelynite (shocked plagioclase) and is …