Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4729648 | Journal of African Earth Sciences | 2008 | 9 Pages |
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
Authors
J. Javier Álvaro, Blanca Bauluz,