Search Results - "James, D. M. D"

Zinc isotopic evidence for the origin of the Moon by Paniello, Randal C., Day, James M. D., Moynier, Frédéric

“…Lunar magmatic rocks are shown to be enriched in the heavy isotopes of zinc and to have lower zinc concentrations than terrestrial or Martian igneous rocks;…”
Get full text

Tungsten-182 heterogeneity in modern ocean island basalts by Mundl, Andrea, Touboul, Mathieu, Jackson, Matthew G., Day, James M. D., Kurz, Mark D., Lekic, Vedran, Helz, Rosalind T., Walker, Richard J.

“…New tungsten isotope data for modern ocean island basalts (OIB) from Hawaii, Samoa, and Iceland reveal variable 182W/184W, ranging from that of the ambient…”
Get full text

Metal grains in lunar rocks as indicators of igneous and impact processes by Day, James M. D.

“…Anhedral metal grains of >micrometer size occur in many lunar rock types, including mare basalts, magnesian suite rocks (MGS), ferroan anorthosites (FAN), and…”
Get full text

Stochastic Late Accretion to Earth, the Moon, and Mars by Bottke, William F, Walker, Richard J, Day, James M.D, Nesvorny, David, Elkins-Tanton, Linda

“…Core formation should have stripped the terrestrial, lunar, and martian mantles of highly siderophile elements (HSEs). Instead, each world has disparate, yet…”
Get full text

A changing thermal regime revealed from shallow to deep basalt source melting in the Moon by Srivastava, Yash, Basu Sarbadhikari, Amit, Day, James M. D., Yamaguchi, Akira, Takenouchi, Atsushi

“…Sample return missions have provided the basis for understanding the thermochemical evolution of the Moon. Mare basalt sources are likely to have originated…”
Get full text

Halogens in chondritic meteorites and terrestrial accretion by Clay, Patricia L., Burgess, Ray, Busemann, Henner, Ruzié-Hamilton, Lorraine, Joachim, Bastian, Day, James M. D., Ballentine, Christopher J.

“…Halogen abundances in chondrites are 6 to 37 times lower than previously reported, which is consistent with the low abundances of these elements found in…”
Get full text

Reconciling metal–silicate partitioning and late accretion in the Earth by Suer, Terry-Ann, Siebert, Julien, Remusat, Laurent, Day, James M. D., Borensztajn, Stephan, Doisneau, Beatrice, Fiquet, Guillaume

“…Highly siderophile elements (HSE), including platinum, provide powerful geochemical tools for studying planet formation. Late accretion of chondritic…”
Get full text

Long-term changes in northern large-herbivore communities reveal differential rewilding rates in space and time by Speed, James D M, Austrheim, Gunnar, Kolstad, Anders Lorentzen, Solberg, Erling J

“…Herbivores have important impacts on ecological and ecosystem dynamics. Population density and species composition are both important determinants of these…”
Get full text

Multiple early-formed water reservoirs in the interior of Mars by Barnes, Jessica J., McCubbin, Francis M., Santos, Alison R., Day, James M. D., Boyce, Jeremy W., Schwenzer, Susanne P., Ott, Ulrich, Franchi, Ian A., Messenger, Scott, Anand, Mahesh, Agee, Carl B.

“…The abundance and distribution of water within Mars through time plays a fundamental role in constraining its geological evolution and habitability. The…”
Get full text

Ancient Melt-Depletion in Fresh to Strongly Serpentinized Tonga Trench Peridotites by Day, James M D, Brown, Diana B

“…ABSTRACT Peridotites from the Tonga Trench are some of the deepest-derived and freshest ever obtained from the seafloor. This study reports new bulk-rock…”
Get full text

Climate sensitivity of shrub growth across the tundra biome by Myers-Smith, Isla H., Elmendorf, Sarah C., Beck, Pieter S. A., Wilmking, Martin, Hallinger, Martin, Blok, Daan, Tape, Ken D., Rayback, Shelly A., Macias-Fauria, Marc, Forbes, Bruce C., Speed, James D. M., Boulanger-Lapointe, Noémie, Rixen, Christian, Lévesque, Esther, Schmidt, Niels Martin, Baittinger, Claudia, Trant, Andrew J., Hermanutz, Luise, Collier, Laura Siegwart, Dawes, Melissa A., Lantz, Trevor C., Weijers, Stef, Jørgensen, Rasmus Halfdan, Buchwal, Agata, Buras, Allan, Naito, Adam T., Ravolainen, Virve, Schaepman-Strub, Gabriela, Wheeler, Julia A., Wipf, Sonja, Guay, Kevin C., Hik, David S., Vellend, Mark

“…Rapid climate warming has been linked to increasing shrub dominance in the Arctic tundra. Research now shows that climate–shrub growth relationships vary…”
Get full text

Contrasting spatial, temporal and environmental patterns in observation and specimen based species occurrence data by Speed, James D M, Bendiksby, Mika, Finstad, Anders G, Hassel, Kristian, Kolstad, Anders L, Prestø, Tommy

“…Species occurrence data records the location and time of an encounter with a species, and is valuable for many aspects of ecological and evolutionary analyses…”
Get full text

Low retention of impact material by the Moon by Day, James M. D.

“…Simulations demonstrate that the Moon’s ability to retain material from striking impactors is lower than was previously assumed. This finding helps to explain…”
Get full text

Reported ultra-low lava viscosities from the 2021 La Palma eruption are potentially biased by Gisbert, Guillem, Troll, Valentin R., Day, James M. D., Geiger, Harri, Perez-Torrado, Francisco J., Aulinas, Meritxell, Deegan, Frances M., Albert, Helena, Carracedo, Juan Carlos

Get full text

Olivine-rich achondrites from Vesta and the missing mantle problem by Vaci, Zoltan, Day, James M. D., Paquet, Marine, Ziegler, Karen, Yin, Qing-Zhu, Dey, Supratim, Miller, Audrey, Agee, Carl, Bartoschewitz, Rainer, Pack, Andreas

“…Mantles of rocky planets are dominantly composed of olivine and its high-pressure polymorphs, according to seismic data of Earth’s interior, the mineralogy of…”
Get full text

Late accretion as a natural consequence of planetary growth by Day, James M. D., Walker, Richard J., Qin, Liping, Rumble III, Douglas

“…The mantles of the terrestrial planets contain elemental abundances that suggest accretion continued at a late stage, after core formation. Geochemical data of…”
Get full text

Martian magmatism from plume metasomatized mantle by Day, James M. D., Tait, Kimberly T., Udry, Arya, Moynier, Frédéric, Liu, Yang, Neal, Clive R.

“…Direct analysis of the composition of Mars is possible through delivery of meteorites to Earth. Martian meteorites include ∼165 to 2400 Ma shergottites,…”
Get full text

Legacy effects of herbivory on treeline dynamics along an elevational gradient by Mienna, Ida M., Austrheim, Gunnar, Klanderud, Kari, Bollandsås, Ole Martin, Speed, James D. M.

“…Treelines are expected to expand into alpine ecosystems with global warming, but herbivory may delay this expansion. This study quantifies long-term effects of…”
Get full text

Pacific Lithosphere Evolution Inferred from Aitutaki Mantle Xenoliths by Snortum, Eric, Day, James M D, Jackson, Matthew G

“…Abstract Highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, Re), major and trace element abundances, and 187Re–187Os systematics are reported for xenoliths…”
Get full text

Highly siderophile element depletion in the Moon by Day, James M.D., Walker, Richard J.

“…Coupled 187Os/188Os and highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, Re) abundance data are reported for Apollo 12 (12005, 12009, 12019, 12022, 12038,…”
Get full text