| Abstract: | A classic paper by Rubey [Geol. Soc. Amer. Bull 62 (1951) 1111] examined various hypotheses regarding the origin of sea water and concluded that the most likely hypothesis was volcanic outgassing, a view that was generally accepted by Earth scientists for the next several decades. More recent work suggests that the rate of subduction of water is much larger than the volcanic outgassing rate, lending support to hypotheses that either ocean volume has decreased with time, or that the imbalance is offset by continuous replenishment of water by cometary impacts. These alternatives are required in the absence of additional mechanisms for the return of water from subducting lithosphere to the Earth‘s surface. Our recent work on crustal permeability suggests a large capacity for water upflow through tectonically active continental crust, resulting in a heretofore-unrecognized degassing pathway that can accommodate the water-subduction rate. Escape of recycled water via delivery from the mantle through zones of active metamorphism eliminates the mass-balance argument for the loss of ocean volume or extraterrestrial sources. ?? 2003 Elsevier Science B.V. All rights reserved. |
| Genre: | Conference Paper |
| ProdID: | 70025629 |
| Citation Author: | Ingebritsen, S. E.; Manning, C. E. |
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| Citation End Page: | 6 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geochemical Exploration |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Implications of crustal permeability for fluid movement between terrestrial fluid reservoirs; 2003; Conference Paper; Journal of Geochemical Exploration; Ingebritsen, S. E.; Manning, C. E. |
| Citation Start Page: | 1 |
| Citation Volume: | 78-79 |
| Citation Year: | 2003 |
| Type: | citation/reference |
| Text: | Implications of crustal permeability for fluid movement between terrestrial fluid reservoirs; 2003; Conference Paper; Journal of Geochemical Exploration; Ingebritsen, S. E.; Manning, C. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/S0375-6742(03)00037-2 |
| Date Other: | Wed, 1 Jan 2003 00:00 -0600 |
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