What did the Japanese call the fire tornadoes?
Regional SpecificsFire whirls were produced in the conflagrations and firestorms triggered by firebombings of European and Japanese cities during World War II and by the atomic bombings of Hiroshima and Nagasaki. What was the worst disaster in Japan? The date was September 1, 1923, and the event was the Great Kanto Earthquake, at the time considered
What are the effects of the Nepal earthquake?
Regional SpecificsThe earthquake triggered an avalanche on Mount Everest, killing approximately 20 people. Estimates put the number of trekkers and climbers at Base Camp at the time of the quake at up to 1000. The steep valleys of the area suffered many landslides, the village of Ghodatabela was covered, killing 250 people. What the effects of
What is polar wandering in geology?
Regional Specificspolar wandering, the migration of the magnetic poles over Earth’s surface through geologic time. What causes polar wandering? An important hypothesis of paleomagnetism is that apparent polar wander, the motion of the paleomagnetic pole relative to a continent or plate, is caused entirely by plate motion relative to the mesosphere, which is the relatively stronger
What are the 12 periods?
Regional SpecificsEons of geological time are subdivided into eras, which are the second-longest units of geological time. The Phanerozoic eon is divided into three eras: the Paleozoic, Mesozoic, and Cenozoic. The three eras of the Phanerozoic eon. What are the 12 periods of the geologic time scale? Geological time scale Era Period Plant and Animal Development
How do you determine relative age?
Regional SpecificsRelative Age Determination. Superposition of rock units is a very simple and straightforward method of relative age determination. The principle states that in a sequence of undeformed sedimentary rocks the oldest beds are at the bottom and the youngest ones are at the top. How do you determine the relative ages of igneous rocks? The
What is Biostratigraphic correlation?
Regional SpecificsA scientific method that enables the determination of the geological age and position of rocks, geologic events and processes by comparing sets of fossils found in different geological profiles. What is the principle of biostratigraphic correlation? Biostratigraphic correlation uses index fossils to determine strata ages. Index fossils represent assemblages or groups of organisms that were