8. Data Report: A Comprehensive Geochemical, Mineralogical, and Isotopic Data Set of Variably Altered Dacitic Volcanic Rocks from the Subsurface of the PACMANUS Hydrothermal Field (ODP Leg 193)1

H. Paulick,2 P. Herzig,3 and S. Hoernes2


A geochemical, mineralogical, and isotopic database comprising 75 analyses of Ocean Drilling Program (ODP) Leg 193 samples has been prepared, representing the variable dacitic volcanic facies and alteration types observed in drill core from the subsurface of the PACMANUS hydrothermal system (Table T1). The data set comprises major elements, trace and rare earth elements (REE), various volatiles (S, F, Cl, S, SO4, CO2, and H2O), and analyses of 18O and 86Sr/87Sr for bulk rock and mineral separates (anhydrite). Furthermore, normative mineral proportions have been calculated based on the results of X-ray diffraction (XRD) analysis (Table T2) using the SOLVER function of the Microsoft Excel program.

Several of the samples analyzed consist of mesoscopically distinctive domains, and separate powders were generated to investigate these hand specimen–scale heterogeneities. Images of all the samples are collated in Figure F1, illustrating the location of each powder analyzed and documenting which measurements were performed.

1Paulick, H., Herzig, P., and Hoernes, S., 2005. Data report: A comprehensive geochemical, mineralogical, and isotopic data set of altered dacitic volcanic rocks from the subsurface of the PACMANUS hydrothermal field (ODP Leg 193). In Barriga, F.J.A.S., Binns, R.A., Miller, D.J., and Herzig, P.M. (Eds.), Proc. ODP, Sci. Results 193 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/publications/193_SR/209/209.htm>. [Cited YYYY-MM-DD]

2Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, 53115 Bonn, Germany. Correspondence author: Holger.Paulick@uni-bonn.de

3Lehrstuhl für Lagerstättenlehre und Leibniz-Labor für Angewandte Meeresforschung, Institut für Mineralogie, Bergakademie Freiberg, Brennhausgasse 14, 09596 Freiberg, Germany.

Initial receipt: 27 October 2003
Acceptance: 13 September 2004
Web publication: 5 April 2005
Ms 193SR-209