GEOL 1001 Lecture : Final Notes Dec 4th
Document Summary
Single tetrehedra, single chains, double chains, sheets, 3d structures. Nesosilicate , inosilicates, phyllosilicate, tectosilicates (fancy names for the above list). Identify the correct statements: the si-o tetrahedron underlies all silicate structures. Four oxygen atoms surrounding one si constitutes the si-o tetrahedron. C is wrong!- polymeric forms include the double helix, sheet, and single chain of tetrahedra. Deformation refers to all changes in the shape or position of a rock in response to stress. Deformed rock/geologic structures resulting from plate tectonics include folds, faults and joints. Stress types: compressional stress shortens rock by squeezing, tensional stress extends rocks by pulling apart, and shear stress slides one section of rock relative to another. Crustal faulting at shallow depths and folding at depth from compression. Age decreases outward from axial plane in eroded anticlines. Hawaiian type eruptions, in the middle of plates, often form block lava. The many layered stratovolcanoes, at plate margins, often contain lava tubes.
