Principle of Cross-Cutting Relationships:Any geological feature (like a fault or an igneous intrusion) that cuts across a rock formation must be younger than the rock it cuts through. Together, these principles underpin stratigraphy, the study of rock strata and their relationships over time. Evide...
I recently read, at the recommendation of my favorite cardiologist, the bookCutting for Stone. It is amazing, in many ways. I particularly loved a short passage that talked about the success one person had in improving women’s recovery from fistula surgery. ...