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.
The two best-known igneous rock types are basalt and granite, which have distinctly different compositions and textures. Basalt is the dark, fine-grained stuff of many lava flows and magma intrusions. Its dark minerals are rich in magnesium (Mg) and iron (Fe), hence basalt is called a mafic rock.So basalt is mafic and either extrusive or intrusive.Granite is the light, coarse-grained rock formed at depth and exposed after deep erosion.he main thing about igneous rocks is that they were once hot enough to melt. The following traits are all related to that. 1  Because their mineral grains grew together tightly as the melt cooled, they are relatively strong rocks. 2  They're made of primary minerals that are mostly black, white or gray.