| | Journal (article/letter/editorial) | Allen3,4 and Carmen Conde5 Centro de Astrobiología - Consejo Superior de Investigaciones Científicas, Ctra...Ctra Ajalvir km.4.5. 28850 Torrejón de Ardoz, Spain. f.tornos@csic.es 2 Geological Survey of Canada...reactive rocks such as glassy and/or pumiceous volcaniclastic rocks, and in some cases limestone, favoured...carbonate-altered mass flow deposits) or limestone. One deposit or district may comprise two or more of these main styles...are one of the best known and wellstudied ore deposit types (e.g., Franklin et al. 1981; 2005; Lydon |
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