| Abstract: | Studies of Be distributions in subduction zone sediments will help to understand questions regarding the enrichments of cosmogenic Be-10 in arc volcanic rocks. Analyses of Be-10 and Be-9 in sediments of Ocean Drilling Program Site 808, Nankai Trough and Be-9 in porewaters of Site 808 and Sites 671 and 672, Barbados ridge complex, show significant decreases in solid phase Be-10 and large increases of porewater Be-9 at the location of the de??collement zone and below or at potential flow conduits. These data imply the potential mobilization of Be during pore fluid expulsion upon sediment burial. Experiments involving reaction between a de??collement sediment and a synthetic NaCl-CaCl2 solution at elevated pressure and temperatures were conducted in an attempt to mimic early subduction zone processes. The results demonstrate that Be is mobilized under elevated pressure and temperature with a strong pH dependence. The Be mobilization provides an explanation of Be-10 enrichment in arc volcanic rocks and supports the argument of the importance of the fluid processes in subduction zones at convergent margins. ?? 1994. |
| Genre: | Article |
| ProdID: | 70017639 |
| Citation Author: | You, C. -F.; Morris, J. D.; Gieskes, J. M.; Rosenbauer, R.; Zheng, S. H.; Xu, X.; Ku, T. L.; Bischoff, J. L. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 4897 |
| Citation Issue: | 22 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Geochimica et Cosmochimica Acta |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 11 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Mobilization of beryllium in the sedimentary column at convergent margins; 1994; Article; Journal; Geochimica et Cosmochimica Acta; You, C. -F.; Morris, J. D.; Gieskes, J. M.; Rosenbauer, R.; Zheng, S. H.; Xu, X.; Ku, T. L.; Bischoff, J. L. |
| Citation Start Page: | 4887 |
| Citation Volume: | 58 |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Mobilization of beryllium in the sedimentary column at convergent margins; 1994; Article; Journal; Geochimica et Cosmochimica Acta; You, C. -F.; Morris, J. D.; Gieskes, J. M.; Rosenbauer, R.; Zheng, S. H.; Xu, X.; Ku, T. L.; Bischoff, J. L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | |
