| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4704484 | Geochimica et Cosmochimica Acta | 2007 | 23 Pages |
Abstract
Relative loss/gain for Pb between the analyzed altered samples and a calculated precursor show a maximum relative gain of 901%. Samples with relative Pb gain from both drill sites are associated with lower temperature alteration mineral assemblages characterized by pervasive chloritization. The related lower temperature (220-250 °C) neutral to slightly acidic fluids have been ascribed by others to return circulation of hydrothermal fluids that did not interact with seawater. Because altered samples have a higher Pb content than the fresh precursor, leaching of fresh volcanic rocks cannot be the source of Pb in the hydrothermal systems.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Yannick Beaudoin, Steven D. Scott, Michael P. Gorton, Zoltan Zajacz, Werner Halter,