For 34 consecutive quarters, HSS has scored in the 99th percentile on âLikelihood to Recommendâ â a key indicator of customer satisfaction in many industries â when compared to similar hospitals in the Press Ganey database. HSS patients come from all 50 states and more than 100 countries.
Let's review. Volcanoes are vents in the earth's crust through which lava, rock fragments, hot vapor and gases are ejected. There are different types of volcanoes based on their size, shape, composition and eruptive style. Composite cone volcanoes are cone-shaped volcanoes composed of layers of lava, ash and rock debris.
A good example of intrusive igneous rock is granite . Extrusive igneous rocks form when the magma or molten rock pours out onto the earth's surface or erupts at the earth's surface from a volcano . Extrusive rocks are also called volcanic rocks. Basalt , formed from hardened lava , is the most common extrusive rock. Obsidian , a black glassy rock, is also an extrusive rock. Igneous rocks are classified according to their texture and mineral or chemical content. The texture of the rock is determined by the rate of cooling. The slower the cooling, the larger the crystal.