(Table 2) Carbonate chemistry and isotopes from northern Cascadia margin samples, supplement to: Joseph, Craig; Torres, Marta E; Martin, Ruth A; Haley, Brian A; Pohlman, John W; Riedel, Michael; Rose, Kelly (2012): Using the 87Sr/86Sr of modern and paleoseep carbonates from northern Cascadia to link modern fluid flow to the past. Chemical Geology, 334, 122-130

Craig Joseph
Most authigenic carbonates previously recovered from the Cascadia slope have 87Sr/86Sr signatures that reflect shallow precipitation in equilibrium with coeval seawater. There is also evidence for carbonate formation supported by fluids that have been modified by reactions with the incoming Juan de Fuca plate (87Sr/86Sr = 0.7071; Teichert et al., 2005, doi:10.1016/j.epsl.2005.08.002) or with terrigenous turbidites (87Sr/86Sr = 0.70975 to 0.71279; Sample et al., 1993, doi:10.1130/0091-7613(1993)021<0507:CCICFF>2.3.CO;2). We report on the strontium isotopic composition of carbonates...
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