The continental sized provinces at the base of the mantle were recently proposed to the remnants of Theia, the protoplanet that struck the Earth to form the Moon 4.5 billion years ago. But are other explanations for these provinces possible? See the discussion in Science.
Research by our group about the nature of the deep Earth, led by Dr. Curtis Williams, was recently featured in the Atlantic Magazine.
In celebration of 150 years of Mendeleev's periodic table, I did a short fun little youtube video that you can check out from this UC Davis website.
Research about the antiquity of the continental sized large low shear wave velocity provinces at the core-mantle boundary was published in Geochemistry, Geophysics, Geosystems: Primitive helium is sourced from seismically slow regions in the lowermost mantle by Curtis Williams, Sujoy Mukhopadhyay, Maxwell Rudolph and Barbara Romanowicz, and was featured in GeoSpace.
Research from our group was highlighted in AGU's EOS Centennial Collections.
Our new paper is out today in Nature: Capture of nebular gases during Earth's accretion is preserved in deep-mantle neon by Curtis Williams and Sujoy Mukhopadhyay. To read some examples of press reports check out the UC Davis press release, Cosmos Magazine or the Daily Mail.
A new paper detailing how xenon isotopes remember the history of volatile recycling is out today in Nature: Xenon isotopic constraints on the history of volatile recycling into the mantle by Rita Parai and Sujoy Mukhopadhyay. See some perspectives of the paper in the UC Davis press release and Physics Today
Our new paper is out today in Science: Preservation of Earth-forming events in the tungsten isotopic composition of modern flood basalts by Hanika Rizo et al. W anomalies in the mantle demonstrate that the Earth has not erased signatures from the main stage of planet formation. Also see the Perspective by Tais Dahl.
Check out our paper in EPSL on Evidence for multiple magma ocean outgassing and atmospheric loss episodes from mantle noble gases by Jonathan Tucker and Sujoy Mukhopadhyay. A perspective on the article is in the LA Times.
Check out our paper in Nature on Early differentiation and volatile accretion recorded in deep-mantle neon and xenon. The paper presents evidence that the plume and MORB sources had differentiated within the first 100 million years and has not been homogenized since. This results provides new insights into the Earth's early history, volatile accretion, mantle [...]