AMCS Bulletin 13 Geologic Studies in the Purificación Karst By Louise Hose and Gerald Atkinson with a foreword by Peter Sprouse 87 pages, softbound 53 figures (1 in color), foldout plates 2003

This bulletin contains Louise Hose's masters thesis on the geology and hydrology of the Purificación karst and Gerald Atkinson's senior honors thesis on the biostratigraphy of two of the limestones in the area, which contains 93-kilometer Sistema Purificación, longest dry cave in Mexico.

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Table of Contents

9	The Geology and Hydrology of the Sistema Purificación Area, Villa Hidalgo, Tamaulipas, Mexico
13	Introduction
19	Regional geologic setting
29	Stratigraphy and lithology of the area
37	Structure of the area
47	Geomorphology
51	Hydrology of the area
61	Geologic factors controlling the speleogenesis of Sistema Purificación
66	Glossary and references
71	Planktonic foraminiferal biostratigraphy of the Tamabra and Méndez formations in the Conrado Castillo area, Tamaulipas and Nuevo León, Mexico