PDF-LETTERS Long aftershock sequences within continents an

Plate tectonics gives no insight however into where and when earthquakes will occur within plates because the interiors of ideal plates should not deform As a result within plate interiors assessments of earthquake hazards rely heavily on the assump. According . to Alfred Wegener, the super-continent of Pangea began to break up 200 million years ago with the continents attaining the size, shape, and location where we see them today. This movement of continents has not yet come to an end. According to J. Tuzo Wilson, the breakup and drifting of the present continents . In 1812, Alfred Wegener presented his scientific theory called “Continental Drift”. It was based on his belief that the continents had drifted apart from one another.. Pangaea. Wegener ‘s hypothesis was that all the continents had once been joined together in a single landmass and have since drifted apart.. 1. Continents and Ocean. A continent is one of the seven large landmasses on earth. . . 2. Continents and Oceans. The seven continents are:. Africa . Australia. Antarctica . Asia. North America. South America. Write On . Grade. . 3. Learner Expectation. Content Standard:. 3.0 . Geography enables the students to see, understand and appreciate the web of relationships between people, places, and environments. Students will use the knowledge, skills, and understanding of concepts within the six essential elements of geography: world in spatial terms, places and regions, physical systems, human systems, environment and society, and the uses of geography.. One Theories Journey . Continental drift -- One theory's journey. . Today, you might be laughed out of a geology course for questioning whether continents move through geologic time. But 75 years ago, only skeptics believed that continents could take a hike. Talk about conventional . How 2 continents fell in love…and created a big, beautiful world. . By: Carla Vigil. SS-EP-4.1.2. Students will use geographic tools to identify major landforms (e.g., continents, mountain ranges), bodies of water (e.g., oceans, major rivers) and natural resources on Earth’s surface and use relative location. Video on Earth 1 million years from now. Theory of Continental Drift. Alfred Wegener . wrote . about his hypothesis of . continental . drift . in the 1900s. .. Continental drift.  is the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations. . Ahead of its Time. It has been recognized for along time that coastlines of South America and Africa appear to fit together. Still it is another feature of Geology where direct information had been missing, and the thinking of individuals were much different.. Evidence for Plate Tectonics. Changes in Sea Floor Magnetism. Evidence for Plate Tectonics. Continents fit together like a puzzle. Changes in Sea Floor Magnetism. Evidence for Plate Tectonics. Fossils of plants and animals of the same species found on different continents. . Name all 7 continents. North America. South America. Africa. Antarctic. Australia. Europe. Asia. Pangaea. Pangaea is the name for the original super continent. Pan .  all. G. aea  Earth. The continents looked like they might fit together like puzzle pieces. Unit 12.1. These observations lead him to come up with the . ___________________________. A very long time ago (~200 million years) the continents were joined together in a . ___________________. called . and humanitarian response. . L. essons . from Nepal. THE SCIENCE OF . AFTERSHOCK FORECASTING. Earthquakes can’t be predicted. However, aftershocks follow robust seismological . ‘laws’. Probability . Karen Felzer. USGS Pasadena. Preliminary Work!!. Subject to change!. The ETAS simulations assign aftershock density with distance, . r. ,. from the . mainshock. as:. Aftershock density = 1/(r . dmin). VIRGINIA SEISMIC ZONE: IMPLICATIONS FOR FAULT RUPTURE . AREA - MOMENT RELATIONS. Martin Chapman, Jacob Beale. Department of Geosciences. Virginia Tech. Blacksburg, Virginia. email: mcc@vt.edu. GSA Southeastern Section Meeting.