The Topock quadrangle exposes a structurally complex part of the Colorado River extensional corridor and also exposes deposits that record landscape evolution during the history of the Colorado River. Paleoproterozoic gneisses and Mesoproterozoic granitoids ...

<p>Serpentinites are metamorphic rocks that are produced by low grade metamorphism or hydrothermal alteration of ultramafic igneous rocks. They have been used for many centuries in the construction of major cultural and religious symbols. The serpentinization ...

This is a field trip guide concerning different geological aspects of the California central coast, that includes selective papers on petrology - mineralogy by various authors.