Contrast the philosophies of Catastrophism and Uniformitarianism. What are the major differences in how each philosophy addresses the age of the Earth? Finally, while neither philosophy […]
The best examples of chemical are the formation of caves (karst). Rainwater seeps through humic material and becomes acidic. The acidic water seeps into joints in […]
Basalt is a mafic extrusive igneous rock consisting of a glassy matrix with phenocrysts of plagioclase and sometimes olivine or pyroxene. Basalt containing many gas bubbles […]
convection currents occur when a heated fluid expands, becoming less dense, and rises. The fluid then cools and contracts, becoming more dense, and sinks. Convection currents […]