Are there earthquakes in Denver?
Regional SpecificsEach time an earthquake occurs in Colorado, the news media and public asks, “Does Colorado have earthquakes?” Short answer: Yes! In comparison with California, Nevada, and Utah, major earthquakes here are infrequent. When was the last earthquake in Denver? The last quake felt in Denver was a magnitude-4.2 temblor on Christmas Day 1994. How often
What does paleomagnetism tell us about Earth’s past?
Regional SpecificsThe record of the strength and direction of Earth’s magnetic field (paleomagnetism, or fossil magnetism) is an important source of our knowledge about the Earth’s evolution throughout the entire geological history. This record is preserved by many rocks from the time of their formation. What is paleomagnetism How does this help scientists understand the history
What does seismic activity mean?
Regional SpecificsWhat seismic activity means? Seismic activity is defined as the types, frequency and size of earthquakes that happen over a period of time in a certain area. An example of seismic activity is how often earthquakes occur in the San Francisco Bay Area. noun. What is an example of seismic? The definition of seismic is
How are foliated metamorphic rocks classified?
Regional SpecificsMetamorphic rocks are broadly classified as foliated or non-foliated. Non-foliated metamorphic rocks do not have aligned mineral crystals. Non-foliated rocks form when pressure is uniform, or near the surface where pressure is very low. How do you classify foliated metamorphic rocks? The various types of foliated metamorphic rocks, listed in order of the grade or
What is active and passive recreation?
Regional SpecificsActive recreation: An activity that requires a considerable expenditure of energy – e.g: cycling. Passive recreation: Involves little exertion, but is generally sustained – for example, reading and fishing. What is an active recreation? Active recreation is leisure time physical activity undertaken outside of structured, competition sport. It is a set of activities within the
What ended the Phanerozoic eon?
Regional SpecificsWhat happened Phanerozoic eon? The time span of the Phanerozoic starts with the sudden appearance of fossilized evidence of a number of animal phyla; the evolution of those phyla into diverse forms; the emergence and development of complex plants; the evolution of fish; the emergence of insects and tetrapods; and the development of modern fauna.