The type of rock that works best as an aquifer is volcanic rock that fills in as rubble between flows. This type of rock is highly porous and rather permeable, permitting significant water movement. More »

Mt Everest is made up of a variety of different rocks including sandstone, siltstone, sedimentary rock, granite and metamorphic rock. The mountain is comprised of three different formations, which make up the geology of ... More »

According to Science Daily, the types of rock that make up the continental crust include metamorphic, sedimentary and granitic. These rocks form continents and shallow sea beds, which are called continental shelves. More »

Pumice rock has a eutaxitic texture characterized by a frothy, glassy vesicular surface that makes the volcanic rock extremely porous. The presence of numerous gas bubble perforations enables pumice to float on water. More »

Moving water that flows through the porous rock of an aquifer is filtered by the tiny pore spaces in the rock. The pore size determines the size of the particulate matter that flows through; smaller pore sizes are helpfu... More » Science Physics Motion & Mechanics

Some facts about igneous rocks include that they are glassy in nature, that pumice igneous rock is the lightest type of rock on Earth, and that the moon is made of igneous rocks. Igneous rocks come from molten magma and ... More »

Shale is a sedimentary type of rock. Sedimentary rock is formed when tiny particles of sand, pebbles or other fragments of material gather in layers, hardening over time. More » Science Earth Science Geology