- Lake Lappajärvi
Infobox_lake
lake_name = Lake Lappajärvi
image_lake = Lappajärvi_from_satellite.png
caption_lake = Lappajärvi is the largest lake near the lower right corner.
image_bathymetry =
caption_bathymetry =
location =Lappajärvi , Finland
coords = coord|63|12|N|23|42|E|type:waterbody_region:FI|display=inline,title
type =impact crater
inflow =
outflow = Ähtävänjoki
catchment =
basin_countries = Finland
length =
width =
area = 145.49 km² [http://www.ymparisto.fi/default.asp?contentid=234185&lan=fi&clan=en Finnish Environment Institute: Finnish lakes larger than 40 square kilometers] ]
depth =
max-depth = 36 m
volume =
residence_time =
shore =
elevation = 69.5 m
islands = 56 (Kärnä )
cities =Lappajärvi is a
lake inFinland , in the municipalities ofLappajärvi ,Alajärvi andVimpeli . It is formed in a 23 km-widemeteorite crater. The age of the crater is estimated to be 73.3 ± 5.3million year s (UpperCretaceous ).References
External links
* [http://www.unb.ca/passc/ImpactDatabase/ Earth Impact Database]
* [http://www.somerikko.net/old/geo/imp/lappa_e.htm Lappajärvi impact structure]
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