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.
Obsidian and basalt. If the magma cools quickly, small crystals form in the rock. This can happen if the magma erupts from a volcano. Obsidian and basalt are examples of this type of rock. They are called extrusive igneous rocks because they form from eruptions of magma.ranite and gabbro are examples of this type of rock. They are intrusive igneous rocks because they form from magma underground. Unlike sedimentary rocks, igneous rocks do not contain any fossils. This is because any fossils in the original rock will have melted when the magma formed. 1  Page. 2  1. 3  2.