astrobleme
Definitions
from The American Heritage® Dictionary of the English Language, 4th Edition
- noun A scar on the earth's surface left from the impact of a meteorite.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- noun A pit-like structure created by an impacting meteoroid, asteroid or comet.
Examples
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Another earthquake spot is on the north shore of the St. Lawrence River, most interestingly just in a large meteorite impact structure ( "astrobleme") called Charlevoix.
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A comprehensive comparative analysis with other complex meteorite impact structures demonstrated that it is the oldest, the largest and the only example on earth providing a full geological profile of an astrobleme below the crater floor, thereby enabling research into the genesis and development of an astrobleme immediately post impact.
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Only one astrobleme in Europe fit the description, a crater called the Ries that lay some 300 kilometers to the east, on the northern shore of the Danube River.
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The structure called the Ries (or Rieskessel) is the subject of some controversy-one school of thought accepting it as an astrobleme, while another holds it to be the result of a cryptovolcanic explosion that brought to the surface "meteoritelike" materials.
Note
The word 'astrobleme' comes from the Greek 'astron' ("star"), plus 'bleme' "throw of a missile; wound caused by a missile".
