ENVIRON 222 Lecture Notes - Lecture 5: Seafloor Spreading, Joides Resolution, Dynamic Positioning
Document Summary
Collection of scientific facts through observation and measurement. A tentative, testable statement about the natural world that can be used to build more complex inferences and explanations. Development of observations, experiments, and models to test (and, if necessary revise) the hypothesis. In science, a well-substantiated explanation of some aspect of the natural world that can incorporate facts, laws, logical inferences and tested hypothesis. fit of continents, continuity of fossil records across continents, continuity of glacial striations across continents, d all of the above. Ocean sediments become thicker away from ridge crest. Sediments are the same age at the surface, but bottom sediments are older away from the crest. Drills in water up to 8000m deep; uses oil rig technology. Can recover cores several km beneath the floor. Dynamic positioning to stay in the same place. Some things not explained by sea floor spreading. Earthquake locations (or foci) occur predominantly along plate boundaries.
