"there is no vestige of a beginning, no prospect of an end" -James Hutton
The Earth is 6011 years old.
In 1654 James Ussher calculated the age of the earth using ,begats. 2007 + 4004 = .
Clues to the actual age of the earth
Earthquakes and Faulting
Greek for earthquake Seismicity: earthquakes Seismology: study of earthquakes Seismologists Seismometers: earthquake measurement devices
How and why do earthquakes occur?
On a fault Existing or new faults
Deformation and Mountain Building
Orogen and Orogeny Oro: Greek for mountain Mountains form in `belts', or orogens Orogeny: mountain building event
How are mountains created?
by Tectonic processes, like Continent-
History of the Earth, Part 1
Zoomable Art PC Mac
Early Earth: we already know a lot
Accretion: Bombardment by meteorites Sphericity Differentiation Formation of moon Formation of magnetic field
Lot of Igne
Geology 121. Dr. Bonnie (Barbara) Souter 1.) What are the three different type of (central vent) volcanoes? What type of lava and/or ash is typical for each ones eruptive style? Correct Answer: Cinder cones erupt felsic ash. Stratovolcanoes erupt and