Seismically invisible water in Earth's transition zone?
Ringwoodite, the dominant mineral at depths between 520 km and 660 km, can store up to 2–3 wt.% of water in its crystal structure, making the Earth's transition zone a plausible water reservoir that plays a central role in Earth's deep water cycle. Experiments show that hydration of ringwo...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2018
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| _version_ | 1797101045788180480 |
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| author | Schulze, K Marquardt, H Kawazoe, T Ballaran, TB McCammon, C Koch-Mueller, M Kurnosov, A Marquardt, K |
| author_facet | Schulze, K Marquardt, H Kawazoe, T Ballaran, TB McCammon, C Koch-Mueller, M Kurnosov, A Marquardt, K |
| author_sort | Schulze, K |
| collection | OXFORD |
| description | Ringwoodite, the dominant mineral at depths between 520 km and 660 km, can store up to 2–3 wt.% of water in its crystal structure, making the Earth's transition zone a plausible water reservoir that plays a central role in Earth's deep water cycle. Experiments show that hydration of ringwoodite significantly reduces elastic wave velocities at room pressure, but the effect of pressure remains poorly constrained. Here, a novel experimental setup enables a direct quantification of the effect of hydration on ringwoodite single-crystal elasticity and density at pressures of the Earth's transition zone and high temperatures. Our data show that the hydration-induced reduction of seismic velocities almost vanishes at conditions of the transition zone. Seismic data thus agree with a wide range of water contents in the transition zone. |
| first_indexed | 2024-03-07T05:46:21Z |
| format | Journal article |
| id | oxford-uuid:e75b6c31-892d-4a0c-ae88-332e4e71b5f1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:46:21Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:e75b6c31-892d-4a0c-ae88-332e4e71b5f12022-03-27T10:38:00ZSeismically invisible water in Earth's transition zone?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e75b6c31-892d-4a0c-ae88-332e4e71b5f1EnglishSymplectic ElementsElsevier 2018Schulze, KMarquardt, HKawazoe, TBallaran, TBMcCammon, CKoch-Mueller, MKurnosov, AMarquardt, KRingwoodite, the dominant mineral at depths between 520 km and 660 km, can store up to 2–3 wt.% of water in its crystal structure, making the Earth's transition zone a plausible water reservoir that plays a central role in Earth's deep water cycle. Experiments show that hydration of ringwoodite significantly reduces elastic wave velocities at room pressure, but the effect of pressure remains poorly constrained. Here, a novel experimental setup enables a direct quantification of the effect of hydration on ringwoodite single-crystal elasticity and density at pressures of the Earth's transition zone and high temperatures. Our data show that the hydration-induced reduction of seismic velocities almost vanishes at conditions of the transition zone. Seismic data thus agree with a wide range of water contents in the transition zone. |
| spellingShingle | Schulze, K Marquardt, H Kawazoe, T Ballaran, TB McCammon, C Koch-Mueller, M Kurnosov, A Marquardt, K Seismically invisible water in Earth's transition zone? |
| title | Seismically invisible water in Earth's transition zone? |
| title_full | Seismically invisible water in Earth's transition zone? |
| title_fullStr | Seismically invisible water in Earth's transition zone? |
| title_full_unstemmed | Seismically invisible water in Earth's transition zone? |
| title_short | Seismically invisible water in Earth's transition zone? |
| title_sort | seismically invisible water in earth s transition zone |
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