Lava types are primarily classified based on their chemical composition and viscosity. The two main types are basaltic and rhyolitic lava. Basaltic lava is low in silica, making it fluid and allowing it to flow easily. This type is commonly found in shield volcanoes, where it creates broad, gently sloping landforms. In contrast, rhyolitic lava has a high silica content, resulting in a thicker, more viscous consistency. This type tends to erupt explosively, forming stratovolcanoes with steep profiles. Other lava types include andesitic lava, which has characteristics between basaltic and rhyolitic, contributing to diverse volcanic landscapes.