Article ID Journal Published Year Pages File Type
4729648 Journal of African Earth Sciences 2008 9 Pages PDF
Abstract
The mineral and chemical composition of the host-rock and diagenetic fluids was the determining factor for the kind of feldspar preservation. Although the primary type of K-feldspar replacement is albitization, secondary albite subsequently suffered from illitization, chloritization, and/or replacement by calcite. A direct implication of this work is the possible geochronological dating of both volcanic eruptions and archaeocyath- and trilobite-bearing host-rocks based on radiometric analyses within unaltered K-feldspar pyroclasts extracted after etching.
Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Geology
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