Zacualpan Mining District, State of Mexico
The Zacualpan District is located in the Zacualpan municipality near the northern Guerrero stateline, southwestern State of México, 94 km directly southwest of Mexico City and 164 km by land through Toluca; geographic coordinates are 18°44′00″N and 99°48′30″W. Average elevation is 2,060 m (Fig. 1). It lies at the northern border of the Cuenca del Balsas–Mezcala subprovince of the Sierra Madre del Sur physiographic province. The rugged mountain relief is in the mature stage of the erosional cycle; drainage follows a rectangular pattern. The climate is predominantly semitropical to subhumid; annual rainfall averages 800 to 1,600 mm and temperatures range 14° to 22°C. Vegetation is characterized by white oak (Quercus candÃ—;nas), pine (Pinus ocote), arbutus (Arbustus variant), and cedar (Juniperus sp.).
Access to the area from Mexico City is by Highways 130 (México–La Marquesa Ixtapa de la Sal–Zacualpan) and 55 (México–Toluca–Almoloya de Alquiciras Zacualpan).
Figures & Tables
This volume was developed, produced, and privately printed in Mexico, in Spanish, by the late Ing. G.P. Salas in 1988, as a Mexican contribution to the Geology of North America, with the understanding that it would be translated into English for inclusion in the set. The translation is by Dr. Cecily Petzall of Caracas, Venezuela, with considerable figure translation and redrafting provided by GSA. Salas worked on the volume until his death, with much valuable help from Ing. Hugo Cortez Guzmán. The result is a valuable English-language synthesis of the information available to Salas in the early to mid-1980s about the geothermal, coal, and metal-mining sectors (and some non-metallic resources) of the economic geology of Mexico.