About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
Journal of Sedimentary Research (SEPM)
Abstract
Clay Mineralogy of Pluvial Lake Sediments, Southern High Plains, Texas
W. T. Parry, C. C. Reeves, Jr.
ABSTRACT
Lacustrine sediments from six pluvial lake basins on the southern High Plains, Texas contain illite, montmorillonite, interstratified illite-montmorillonite, kaolinite, glauconitic mica, and in two basins, sepiolite. Sepiolite, illite-montmorillonite, and glauconitic mica are authigenic; some of the montmorillonite is derived from volcanic ash, but most of the lacustrine clay is detrital and representative of ancient soils of the Llano Estacado. Increase in kaolinite and montmorillonite with depth and corresponding decrease in illite is indicative of a Pleistocene pluvial period antedating Tahoka Clay time (14,000 to 22,000 years B. P.). Lacustrine strata of post-Tahoka age, formed in a closed lake environment, consist of illite, illite-montmorillonite, montmorillonite, sepiolite with gypsum, sodium sulfate, glauconitic mica, and dolomite.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 | |
Open PDF Document: $24 |