Academic Journal
Solid Earth Carbon Degassing and Sequestration Since 1 Billion Years Ago
| العنوان: | Solid Earth Carbon Degassing and Sequestration Since 1 Billion Years Ago |
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| المؤلفون: | R. Dietmar Müller, Adriana Dutkiewicz, Sabin Zahirovic, Andrew S. Merdith, Christopher R. Scotese, Benjamin J. W. Mills, Lauren Ilano, Ben Mather |
| المصدر: | Geochemistry, Geophysics, Geosystems, Vol 25, Iss 11, Pp n/a-n/a (2024) |
| بيانات النشر: | Wiley, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Geophysics. Cosmic physics LCC:Geology |
| مصطلحات موضوعية: | carbon cycle, plate tectonics, thermodynamics, climate change, Neoproterozoic, Phanerozoic, Geophysics. Cosmic physics, QC801-809, Geology, QE1-996.5 |
| الوصف: | Abstract Solid Earth CO2 outgassing, driven by plate tectonic processes, is a key driver of carbon cycle models. However, the magnitudes and variations in outgassing are poorly constrained in deep‐time. We assess plate tectonic carbon emissions and sequestration by coupling a plate tectonic model with reconstructions of oceanic plate carbon reservoirs and a thermodynamic model to quantify outfluxes from slabs and continental arcs over 1 billion years. In the early Neoproterozoic, our model predicts a peak in crustal production and net outgassing from 840 to 780 Ma that corresponds to a contemporaneous pulse in large igneous province eruptions. The Sturtian and Marinoan glaciations (717–635 Ma) correspond to a low in mid‐ocean ridge outgassing, while the following Ediacaran global warming coincides with a rise in net atmospheric carbon influx, driven by an increase in plate boundary and rift length. The Cambrian, Silurian/Devonian and Triassic Jurassic hothouse climates are synchronous with a reduction in carbon sequestration flux into oceanic plates, increasing net outgassing. In contrast, the Early Cretaceous hothouse climate is accompanied by a pronounced increase in mid‐ocean ridge outgassing. Both the Early Ordovician cooling and the late Paleozoic ice ages coincide with a significant decrease in net atmospheric outgassing, driven by an increase in carbon sequestration. The late Cenozoic glaciation is associated with a long‐term decrease in mid‐ocean ridge and rift degassing, and a pronounced increase in carbon flux into pelagic carbonate sediments. Our tectono‐thermodynamic carbon cycle model provides a new foundation for future long‐term climate and geochemical cycling models. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1525-2027 |
| Relation: | https://doaj.org/toc/1525-2027 |
| DOI: | 10.1029/2024GC011713 |
| URL الوصول: | https://doaj.org/article/1e1b5845289c496d9e0ffac009802cd5 |
| رقم الانضمام: | edsdoj.1e1b5845289c496d9e0ffac009802cd5 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 15252027 |
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| DOI: | 10.1029/2024GC011713 |