Ceramic Petrography Laboratory
Research Results
Tucson Basin Petrofacies Model Summary
Elizabeth J. Miksa, James M. Heidke, Carlos Lavayen, and James P. Lombard
The petrofacies model for the Tucson Basin started with Lombard (1987) and was the first petrofacies model developed for Arizona. It is also the last major basin (of those under research) to have a full discriminant analysis petrofacies model developed. (The first model was based on multiple layers of descriptive statistics, but was not a multivariate statistical analysis.) Data for the Tucson model has been collected from many different projects over 20 years of research. A review article is currently being written (January 2007). In the meantime, the following elements are ready for display:
A map of the current Tucson Basin petrofacies model. Petrofacies Map (PDF format) It shows all of the current petrofacies, and has been corrected from previous (published) versions, some of which had map projection errors. A list of the petrofacies names, Petrofacies Names (Adobe PDF format) along with information of when they came into use. Some older petrofacies names are listed as well, with their "last date of use" indicated. In the future, this website will include a full progression of petrofacies maps for the basin. A list of point count parameters (Microsoft Excel format) in current use in the Tucson Basin. A cross-tabulation of samples (Adobe PDF format) collected and available in the Tucson Basin, inventory (Excel 2000/XP format) of the sands, and point count data (Excel 2000/XP format) for the sands used in the discriminant analysis model. A schematic diagram of the set of nested discriminant analysis models diagram (PDF format) used to classify the sands. A table of the point count parameters and calculated parameters (Adobe PDF format) used as variables in each of the discriminant analysis models. A cross-tabulated table showing the sand discriminant analysis results (Adobe PDF format) of the full discriminant analysis. A list of projects (Adobe PDF format) in the Tucson Basin that have established ceramic provenance through the use of the petrofacies model. All projects on this list have used low-power binocular identification of sand temper in sherds to characterize provenance based on the petrofacies model data; the majority have followed up with verification via a point-counted sample of the characterized sherds. A draft References Cited (Adobe PDF format). Most projects cited in the tables linked to this page should be present in the references, however, this review is still in process (January 2007) and there may be missing citations. This document will be finalized later in 2007.
A detailed discussion of how these elements are developed and combined to create a petrofacies model can be viewed on the Ceramic Petrography Laboratory web pages.
Ceramic Petrography Laboratory Home
|
|
