How does the terroir influence the flavor profile of Zinfandel wines?

Flavor profile of Zinfandel is strongly impacted by the terroir that it is grown in, including such things as the soil type, elevation and microclimate. For instance, grapes cultivated in the rocky, well-drained soils may give complex fruits and also strong tannin, while those grown in colder areas may have fresher acids and subtle aromas. Awareness of the terroir influence may become a reason for the enthusiasts to admire the variety of Zinfandel wines.