Meeting face-to-face with El Capitan

Granitic rocks make up much of Earth's continental crust and many of the planet's most iconic landscapes. However, granite's formation is poorly understood because it happens tens of kilometers below the surface. In this unique study, authors Roger Putnam and colleagues combine decimeter-scale field mapping, rock climbing, and new dating and geochemical analyses to evaluate the timing and intrusive dynamics of the granitic rocks that make up El Capitan in Yosemite National Park, California, USA.

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