Scientists in the G&G Department seek knowledge of the structure, composition, and dynamics of the earth’s interior, the origin and evolution of the earth’s crust, controls on ocean and climate change on time scales of decades to 100 million years, and processes of mass and energy transfer at the land-sea interface.

Recent Submissions

  • Increasing coral reef resilience through successive marine heatwaves 

    Fox, Michael D.; Cohen, Anne L.; Rotjan, Randi; Mangubhai, Sangeeta; Sandin, Stuart A.; Smith, Jennifer E.; Thorrold, Simon R.; Dissly, Laura; Mollica, Nathaniel R.; Obura, David (American Geophysical Union, 2021-08-30)
    Ocean warming is causing declines of coral reefs globally, raising critical questions about the potential for corals to adapt. In the central equatorial Pacific, reefs persisting through recurrent El Niño heatwaves hold ...
  • Sources of dehydration fluids underneath the Kamchatka arc 

    Shu, Yunchao; Nielsen, Sune G.; Le Roux, Véronique; Wörner, Gerhard; Blusztajn, Jerzy S.; Auro, Maureen E. (Nature Research, 2022-08-02)
    Fluids mediate the transport of subducted slab material and play a crucial role in the generation of arc magmas. However, the source of subduction-derived fluids remains debated. The Kamchatka arc is an ideal subduction ...
  • Ammonium and sulfate assimilation is widespread in benthic foraminifera 

    LeKieffre, Charlotte; Jauffrais, Thierry; Bernhard, Joan M.; Filipsson, Helena L.; Schmidt, Christiane; Roberge, Hélène; Maire, Olivier; Panieri, Giuliana; Geslin, Emmanuelle; Meibom, Anders (Frontiers Media, 2022-07-20)
    Nitrogen and sulfur are key elements in the biogeochemical cycles of marine ecosystems to which benthic foraminifera contribute significantly. Yet, cell-specific assimilation of ammonium, nitrate and sulfate by these ...
  • Discovery of active off-axis hydrothermal vents at 9° 54’N East Pacific Rise 

    McDermott, Jill M.; Parnell-Turner, Ross; Barreyre, Thibaut; Herrera, Santiago; Downing, Connor C.; Pittoors, Nicole C.; Pehr, Kelden; Vohsen, Samuel A.; Dowd, William S.; Wu, Jyun-Nai; Marjanovic, Milena; Fornari, Daniel J. (National Academy of Sciences, 2022-07-21)
    Comprehensive knowledge of the distribution of active hydrothermal vent fields along midocean ridges is essential to understanding global chemical and heat fluxes and endemic faunal distributions. However, current knowledge ...
  • Fluid‐mediated mass transfer between mafic and ultramafic rocks in subduction zones 

    Codillo, Emmanuel A.; Klein, Frieder; Dragovic, Besim; Marschall, Horst R.; Baxter, Ethan; Scambelluri, Marco; Schwarzenbach, Esther M. (American Geophysical Union, 2022-07-11)
    Metasomatic reaction zones between mafic and ultramafic rocks exhumed from subduction zones provide a window into mass-transfer processes at high pressure. However, accurate interpretation of the rock record requires ...
  • Hydroacoustic monitoring of seafloor spreading and transform faulting in the equatorial Atlantic Ocean 

    Parnell-Turner, Ross; Smith, Deborah K.; Dziak, Robert P. (American Geophysical Union, 2022-06-26)
    Seismicity along mid-ocean ridges and oceanic transform faults provides insights into the processes of crustal accretion and strike-slip deformation. In the equatorial Atlantic ocean, the slow-spreading Mid-Atlantic Ridge ...
  • The roles of heat and gas in a mushy magma chamber 

    Liao, Yang (American Geophysical Union, 2022-06-30)
    Crustal magmatic systems likely consist of magmatic reservoirs dominated by crystal mush. Recent studies suggest that the physical processes occurring in crystal mush could alter the response of magmatic reservoirs during ...
  • Marine microeukaryotem metatranscriptomics: sample processing and bioinformatic workflow recommendations for ecological applications 

    Cohen, Natalie R.; Alexander, Harriet; Krinos, Arianna I.; Hu, Sarah K.; Lampe, Robert H. (Frontiers Media, 2022-06-28)
    Microeukaryotes (protists) serve fundamental roles in the marine environment as contributors to biogeochemical nutrient cycling and ecosystem function. Their activities can be inferred through metatranscriptomic investigations, ...
  • Deep outer-rise faults in the Southern Mariana Subduction Zone indicated by a machine-learning-based high-resolution earthquake catalog 

    Chen, Han; Yang, Hongfeng; Zhu, Gaohua; Xu, Min; Lin, Jian; You, Qingyu (American Geophysical Union, 2022-06-06)
    Outer-rise faults are predominantly concentrated near ocean trenches due to subducted plate bending. These faults play crucial roles in the hydration of subducted plates and the consequent subducting processes. However, ...
  • Petrogenesis of lava from Christmas Island, Northeast Indian Ocean: implications for the nature of recycled components in non-plume intraplate settings 

    Falloon, Trevor J.; Hoernle, Kaj A.; Schaefer, Bruce F.; Bindeman, Ilya N.; Hart, Stanley R.; Garbe-Schonberg, Dieter; Duncan, Robert A. (MDPI, 2022-03-03)
    Lava samples from the Christmas Island Seamount Province (CHRISP) record an extreme range in enriched mantle (EM) type Sr-Nd-Pb-Hf isotope signatures. Here we report osmium isotope data obtained on four samples from the ...
  • Benthic assemblages are more predictable than fish assemblages at an island scale 

    Sandin, Stuart A.; Alcantar, Esmeralda; Clark, Randy; de León, Ramón; Dilrosun, Faisal; Edwards, Clinton B.; Estep, Andrew J.; Eynaud, Yoan; French, Beverly J.; Fox, Michael D.; Grenda, Dave; Hamilton, Scott L.; Kramp, Heather; Marhaver, Kristen L.; Miller, Scott D.; Roach, Ty N. F.; Seferina, Gisette; Silveira, Cynthia B.; Smith, Jennifer E.; Zgliczynski, Brian J.; Vermeij, Mark J. A. (Springer, 2022-05-30)
    Decades of research have revealed relationships between the abundance of coral reef taxa and local conditions, especially at small scales. However, a rigorous test of covariation requires a robust dataset collected across ...
  • Ocean system science to inform the exploration of ocean worlds 

    German, Christopher R.; Blackman, Donna K.; Fisher, Andrew T.; Girguis, Peter R.; Hand, Kevin P.; Hoehler, Tori M.; Huber, Julie A.; Marshall, John C.; Pietro, Kathryn R.; Seewald, Jeffrey S.; Shock, Everett; Sotin, Christophe; Thurnherr, Andreas M.; Toner, Brandy M. (Oceanography Society, 2022-05-23)
    Ocean worlds provide fascinating opportunities for future ocean research. They allow us to test our understanding of processes we consider fundamental to Earth’s ocean and simultaneously provide motivation to explore our ...
  • Archean cratonic mantle recycled at a mid-ocean ridge 

    Liu, Chuan-Zhou; Dick, Henry J. B.; Mitchell, Ross N.; Wei, Wu; Zhang, Zhen-Yu; Hofmann, Albrecht W.; Yang, Jian-Feng; Li, Yang (American Association for the Advancement of Science, 2022-04-15)
    Basalts and mantle peridotites of mid-ocean ridges are thought to sample Earth’s upper mantle. Osmium isotopes of abyssal peridotites uniquely preserve melt extraction events throughout Earth history, but existing records ...
  • The tides of Enceladus’ porous core 

    Rovira-Navarro, Marc; Katz, Richard F.; Liao, Yang; van der Wal, Wouter; Nimmo, Francis (American Geophysical Union, 2022-05-02)
    The inferred density of Enceladus' core, together with evidence of hydrothermal activity within the moon, suggests that the core is porous. Tidal dissipation in an unconsolidated core has been proposed as the main source ...
  • Shale heavy metal isotope records of low environmental O2 between two Archean Oxidation Events 

    Ostrander, Chadlin; Kendall, Brian; Gordon, Gwyneth W.; Nielsen, Sune G.; Zheng, Wang; Anbar, Ariel D. (Frontiers Media, 2022-04-26)
    Evidence of molecular oxygen (O2) accumulation at Earth’s surface during the Archean (4.0–2.5 billion years ago, or Ga) seems to increase in its abundance and compelling nature toward the end of the eon, during the runup ...
  • Seawater cadmium in the Florida Straits over the Holocene and implications for Upper AMOC variability 

    Valley, Shannon G.; Lynch-Stieglitz, Jean; Marchitto, Thomas M.; Oppo, Delia W. (American Geophysical Union, 2022-04-25)
    Atlantic Meridional Overturning Circulation (AMOC) plays a central role in the global redistribution of heat and precipitation during both abrupt and longer-term climate shifts. Over the next century, AMOC is projected to ...
  • Arctic drainage of Laurentide Ice Sheet meltwater throughout the past 14,700 years 

    Süfke, Finn; Gutjahr, Marcus; Keigwin, Lloyd D.; Reilly, Brendan; Giosan, Liviu; Lippold, Jörg (Nature Research, 2022-04-25)
    During the last deglaciation substantial volumes of meltwater from the decaying Laurentide Ice Sheet were supplied to the Arctic, Gulf of Mexico and North Atlantic along different drainage routes, sometimes as catastrophic ...
  • Turbulence-induced bubble nucleation in hydrothermal fluids beneath Yellowstone Lake 

    Caudron, Corentin; Vandemeulebrouck, Jean; Sohn, Robert A. (Nature Research, 2022-04-29)
    Volcanic systems generate large amounts of gas, and understanding gas fluxes is a fundamental aspect of volcanology and hazard mitigation. Volcanic gases can be challenging to measure, but acoustic methods hold promise in ...
  • Climate change impacts to the Arctic Ocean revealed from high resolution GEOTRACES Po-210-Pb-210-Ra-226 disequilibria studies 

    Baskaran, Mark; Krupp, Katherine; Bam, Wokil; Maiti, Kanchan (American Geophysical Union, 2022-04-06)
    Climate change is transforming the Arctic Ocean in unprecedented ways which can be most directly observed in the systematic decline in seasonal ice coverage. From the collection and analysis of particulate and dissolved ...
  • No modern Irrawaddy River until the late Miocene-Pliocene 

    Jonell, Tara N.; Giosan, Liviu; Clift, Peter D.; Carter, Andrew; Bretschneider, Lisa; Hathorne, Ed C.; Barbarano, Marta; Garzanti, Eduardo; Vezzoli, Giovanni; Naing, Thet (Elsevier, 2022-04-04)
    The deposits of large Asian rivers with unique drainage geometries have attracted considerable attention due to their explanatory power concerning tectonism, surface uplift and upstream drainage evolution. This study ...

View more