Geology Cayden Latimer Andesite • A gray to black volcanic rock • Cools slowly • Proof of volcanic activity on mars Basalt • Extrusive igneous rock • Cools rapidly • Found on the sea floor Conglomerate • Sedimentary rock • Made for round pebbles bound by silca • Couse grain rock Diorite • Coarse grain rock • Diorite is an intrusive igneous rock • Usually medium to dark grey Extrusive • Made from volcanoes • Made when magma cools above or near the earths surface • All extrusive rocks are fine grain Fine grain • Small to glassy textured rocks • Almost always is an extrusive rock Gneiss • High grade metamorphic rock • Displays alternating layers of material • Coarse grain Halite • Salt • Mineral form of sodium chloride • NaCl Igneous • Latin word for fire • Made when magma cools and solidifies • Forms above the earths sufrace Karst topography • Type of landscapes that include sinkholes • Mainly limestone, gypsum, and marble Limestone • CaCO 3 • Soft sedimentary rock • Fine grain that is mainly gray Metamorphic • Tends to have bands • Can contain fossils and crystal structures • Usually found near plate tectonic collision Obsidian • Mainly black or dark brown • Glassy in texture • Extrusive ignous rock Plate techtonics • Movement in earths terrain • Can create many things from mountains to earthquakes and tsunamis • You can see them Quartz • Silicon dioxide • White is its main color • Most common rock in earths crust Rock cycle • Shows how rocks change from three main categories • Igneous, metamorphic, sedimentary • Heat and pressure is that main changer in the cycle Sedimentary • Can be formed from once living things • Coal is a sedimentary rock • They have distinct bedding or layering Texture • How a rock feels or looks • Coarse grain is when larger crystals have formed in the rock • Fine grain is when it cooled so fast it has no crystals Uraniam • Silvery-white element • Has the highest atomic weight • Reacts when exposed to neutrons Volcano • Forms from plate tectonic collision • Can release 100s of pounds or molten rock at once • Main creator of extrusive igneous rocks
