Loading [Contrib]/a11y/accessibility-menu.js
American Journal of Science

All Articles tagged global biogeochemical cycles

  • Evidence for Low Dissolved Silica in mid-Mesozoic Oceans Science Paper
    January 08, 2025 EDT
    Evidence for Low Dissolved Silica in mid-Mesozoic Oceans
    Joyce A. YagerA. Joshua WestElizabeth J. TrowerWoodward W. FischerKathleen RitterbushSilvia RosasDavid J. BottjerAaron J. CelestianWilliam M. BerelsonFrank A. Corsetti

    We measured δ30Si in sponge spicules across the Triassic–Jurassic boundary (ca. 201 Ma). DSi concentrations ranged 20–90 μM, lower than expected, suggesting sponges may play a role in Si cycling.

  • A Model for the Decrease in Amplitude of Carbon Isotope Excursions Across the Phanerozoic Science Paper
    June 01, 2017 EDT
    A Model for the Decrease in Amplitude of Carbon Isotope Excursions Across the Phanerozoic
    Aviv BachanKimberly V. LauMatthew R. SaltzmanEllen ThomasLee R. KumpJonathan L. Payne

    The geological cycling of carbon ties together the ocean-atmosphere carbon pool, Earth9s biosphere, and Earth9s sedimentary reservoirs. Perturbations to this coupled system are recorded in the carbon-isotopic (δ13C) composition of...

This website uses cookies

We use cookies to enhance your experience and support COUNTER Metrics for transparent reporting of readership statistics. Cookie data is not sold to third parties or used for marketing purposes.