Brenna Quigley is a geologist who does wine related consulting as a terroir specialist at brennaquigley.com Brenna describes her unusual family connection to geology, and her entry into the wine world. She goes on to define key concepts in geology, such as what soil is, how it is formed, and the different types of rocks that are found in the world. Brenna describes the key rock formations of France, their history, and how they correspond to wine regions. She then discusses what the implications of different rock types are for vines, and takes a close look at specific wine areas, explaining what their distinguishing features are. Wine fans who would like to deepen their knowledge of wine and geology will find a lot to love about this episode. This episode is sponsored by: Vknow Wine App NY Drinks NY Grand Tasting in Manhattan Sonoma Executive MBA in Wine Business at Sonoma State University Take the demographic survey.