The Indio Mountains are related stratigraphically to the Mexican Geosyncline, structurally to the Sierra Madre Oriental and the Basin-and-Range Province. Cretaceous sedimentary formations, approximately 5000 feet thick, ...

This paper presents a zonation of the Austin chalk and the Burditt marl, divisions of the Austin group in the Jonah quadrangle, Williamson County, Texas. The Austin chalk consists of the Inoceramus subquadratus Schlüter ...

Several previous authors have concentrated on the Central Graben in an attempt to model the North Sea as an extensional basin. Theoretical stretching models predict a certain amount of subsidence, crustal thinning, and ...

This thesis examines the conceptual structures and political contexts of race mixture depicted in Las Castas Mexicanas, a genre of colonial Mexican painting. The first chapter places this genre in historiographical ...

This study describes ground-water flow in the Lower Cretaceous formations near Junction (Kimble County), Texas. Rock exposures were examined throughout the 150-mile study area to determine the nature and distribution of ...

Groundwater flow in alluvial valleys consists of two components, baseflow and underflow. The baseflow component of the Darcy flux flows normal to the river and contributes to the surface flow. The underflow component moves ...