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Our estate Margarita Vineyard is blessed with a rare array of five soil types, and these soil differences from block to block have always been notable in the wines they deliver.
The geographical map pictured below provides a visual explanation as to why Margarita Vineyard is such a ground zero for soil diversity.
We have cropped the map to show the location of Margarita Vineyard, and all of the black lines you see are fault lines. This abundance of localized faults has churned and turned the terrain over time, which explains why you can see everything from uplifted fossilized sea beds, thick fields of shale, rocky plains of alluvium and more during a short walk through the vineyard.
Why does soil diversity matter to us? Well, it allows us to build natural complexity into a single estate-grown wine. For winemakers Mike Sinor and Stewart Cameron, it’s like giving them more colors to paint with.
Starting with the 2013 vintage, we are taking our interest in soil influence to the next level by conducting a more controlled trial of Cabernet Sauvignon lots grown in calcareous ancient sea bed, diablo series clay and Monterey shale. Each lot was farmed the same in terms of crop load and irrigation; harvested at similar ripeness; went through the same fermentation protocols; and was racked to the same barrels (once-used Taransaud barrels with medium+ toast levels).
In the above video, Stewart provides an update on these lots four months after harvest. And so far, the differences are pretty striking.
The ancient sea bed lot from Block 15 is showing a deep, dense black fruit character. The diablo series clay lot from the bottom of Block 50 is exhibiting a zingy red fruit quality, while the Monterey shale lot from the top of Block 50 is showing plum and boysenberry with assertive tannins.
Stay tuned, as we will be following these wines to see how they mature from ground to glass, and looking into ways to share the results at special tastings down the line.