A New Map of Mendoza: Why the Catena Institute's Soil Study Could Reshape How We Buy Wine
The Catena Institute of Wine, the research arm of Bodega Catena Zapata, has released its most comprehensive soil map of Mendoza to date. The 5-year study identifies 47 distinct soil units across the Uco Valley alone — a level of detail that could fundamentally change how consumers and importers think about Argentine wine origin.
For decades, Argentine wine labels said simply “Mendoza.” Then “Uco Valley.” Then maybe “Gualtallary” or “Paraje Altamira.” The new soil map suggests the appropriate level of detail is much finer — sometimes down to specific limestone formations spanning just a few hectares.
“This is the foundation for a new generation of single-vineyard wines,” explains Laura Catena, who has led the institute since 1994. “The map shows that two vineyards 800 meters apart can have completely different soil profiles. That difference shows up in the glass.”
The map identifies four major soil types in the Uco Valley: alluvial gravel (Vista Flores, La Consulta) — generous fruit, ripe tannins; calcareous clay (Gualtallary high altitude) — minerality, tension, age-worthy; volcanic gravels (Paraje Altamira) — spice, structure, herbal complexity; and mixed sedimentary (Tupungato east) — soft fruit, easy aromatic Malbec.
Several producers have announced single-soil wines in response — including Zuccardi's upcoming “Concreto Suelo” line and Achaval Ferrer's planned “Terruños” series.
Want to taste the soil differences yourself? Start with the Argentine wine beginner's guide →