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This scarce geological map of Mexico was created for the 20th International Geological Congress (Congreso Geologico Internacional) held in Mexico in 1956.
This map, scaled at 1:2,000,000, represents a comprehensive geological survey of the entire Mexican Republic, delineating various geological formations through the use of distinct colors and symbols to denote different rock types, tectonic boundaries, and other significant geological features. The legend (simbolos convencionales) outlines key features such as roads, rivers, cities, state and international boundaries, railroads, and ports, providing both a geospatial and geophysical reference for interpreting the geological composition of Mexico.
This map was produced during a period of heightened global demand for natural resources in the years following World War II. The global industrial boom and the need for raw materials, including minerals, metals, and fossil fuels, placed increased emphasis on geological surveys. Mexico, rich in such resources, became a focal point for geological exploration and investment. The 20th IGC session in Mexico was of paramount importance, as it reflected the country’s position in the global geological community and emphasized its geological diversity and potential for resource exploitation.
International Geological Congress
The IGC has a longstanding history, with its first session held in Paris in 1878 during the Paris Exposition. It has since become a preeminent international gathering for geologists, fostering collaboration and research in the Earth sciences. The congress, which operates in conjunction with the International Union of Geological Sciences (IUGS), promotes both fundamental and applied geological research.
The 1956 session in Mexico underscored the growing importance of geological studies in understanding global raw material reserves and the development of the Earth’s crust.
![(Mexico) [Captain William Henry Shippard manuscript notebook with excerpts from Lord Kingsborough and Humboldt on Mexican antiquities, and from other sources on Mesoamerican topics, Native American languages, bibliographical details of American books and maps]](https://storage.googleapis.com/raremaps/img/small/94267.jpg)
![Mexico [Republic of Texas]](https://storage.googleapis.com/raremaps/img/small/113412.jpg)
![(Mexican Independence - Provincial Militia Elections) Al Publico [Manuscript public notice issued the day after Mexican Independence achieved]](https://storage.googleapis.com/raremaps/img/small/114216.jpg)