Proterozoic ocean redox and biogeochemical stasis
نویسندگان
چکیده
منابع مشابه
Proterozoic ocean redox and biogeochemical stasis.
The partial pressure of oxygen in Earth's atmosphere has increased dramatically through time, and this increase is thought to have occurred in two rapid steps at both ends of the Proterozoic Eon (∼2.5-0.543 Ga). However, the trajectory and mechanisms of Earth's oxygenation are still poorly constrained, and little is known regarding attendant changes in ocean ventilation and seafloor redox. We h...
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a Department of Earth Sciences, University of California, Riverside, CA, USA b Department of Earth Sciences, Syracuse University, Syracuse, NY, USA c Department of Geology, University of Johannesburg, South Africa d Department of Geosciences, Virginia Polytechnic and State University, Blacksburg, VA, USA e Department of Geoscience, University of Nevada, Las Vegas, NV, USA f Department of Earth ...
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It is now well established that Iron (Fe) is a limiting element in many regions of the open ocean. Our current understanding of the key processes which control iron distribution in the open ocean have been largely based on thermodynamic measurements performed under the assumption of equilibrium conditions. Using this equilibrium approach, researchers have been able to detect and quantify organi...
متن کاملNicolas Gruber : Ocean Biogeochemical Dynamics
is published by Princeton University Press and copyrighted, © 2006, by Princeton University Press. All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means (including photocopying, recording, or information storage and retrieval) without permission in writing from the publisher, except for reading and browsing via the World Wide Web. Users ar...
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The element phosphorus (P) controls growth in many ecosystems as the limiting nutrient, where it is broadly considered to reside as pentavalent P in phosphate minerals and organic esters. Exceptions to pentavalent P include phosphine--PH3--a trace atmospheric gas, and phosphite and hypophosphite, P anions that have been detected recently in lightning strikes, eutrophic lakes, geothermal springs...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2013
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1208622110