Abstract
Calc-silicate assemblages observed by Puhan & Hoffer in originally marly rocks in the predominantly siliciclastic Kuiseb Formation of the Damara Orogen include the petrological significant subassemblage
The \(\text{P} - \text{T} - \text{X}_{\text{CO}_2 } \) stability conditions of this assemblage are determined at total pressures up to 8000 bars, and the effect of the albite component of plagioclase and of the pistacite component of zoisite/epidote is considered at 5000 bars total pressure. Assuming pressures of formation deduced from other rock systems the zoisite-anorthite-calcite equilibrium data can be used in combination with other pertinent experimental data to estimate the temperature of formation of the observed assemblages and the composition of the now-missing fluid phase.
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Storre, B., Nitsch, KH. (1983). Experimental Investigation of the Stability Conditions of a Penological Significant Calc-Silicate Assemblage Observed in Originally Marly Rocks in the Kuiseb Formation of the Damara Orogen. In: Martin, H., Eder, F.W. (eds) Intracontinental Fold Belts. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-69124-9_33
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DOI: https://doi.org/10.1007/978-3-642-69124-9_33
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