by: Charles O’Dale
Within this website I have documented my explorations of terrestrial impact sites on our planet. My data here will illustrate the shock-metamorphic effects in terrestrial rocks caused by hypervelocity impacts .
- CRATER IDENTIFICATION – geological methods for confirmation of an impact event; geomorphology, shattercones, fractured rocks, gravity anomalies, magnetic anomalies and shock metamorphosim.
- CRATER FORMATION – Impact involves the transfer of massive amounts of energy to a relatively small area of the Earth’s surface, in an extremely short period of time (Kinetic energy).
- CRATER CLASSIFICATION – On this planet, impact craters are divided into three basic morphologic subdivisions: simple craters, complex craters, and peak ring craters.
- CRATER EJECTA – When the crater formation process ends, the resulting circular structure and the surrounding area is covered by an ejecta blanket.
- CRATER RIM – crater; formation, classification, shape, ;
- CRATER SHAPE – Why are impact craters mostly always round?
- EXTINCTIONS vs IMPACT – An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the amount of life on earth.
- GEOLOGICAL PERIODS vs IMPACT – Crater list of known impact craters that R. A. F. Grieve and P. B. Robertson documented in 1979.
- CANADIAN CRATERS – Documented in 1967 & 1975.
- PLANET VS CRATER SIZE – The primary factors governing the size and shape of impact craters are the impact energy, gravity and properties of the target.
- CRATER GLOSSARY