Eifel
Dauner Maare
Location: 50.10 ° N, 6.50° E
Elevation: 406 m
MAAR (Wikipedia)
A maar is a broad, low-relief volcanic crater that is caused by a phreatomagmatic eruption, an explosion caused by
groundwater coming into contact with hot lava or magma. A maar characteristically fills with water to form a relatively
shallow crater lake. The name comes from the local Moselle Franconian dialect of Daun, where it is in turn derived from
Latin mare. Maars are shallow, flat-floored craters that scientists interpret as having formed above diatremes as a result
of a violent expansion of magmatic gas or steam; deep erosion of a maar presumably would expose a diatreme. Maars
range in size from 60 to 8,000 m across and from 10 to 200 m deep, and most are commonly filled with water to form
natural lakes. Most maars have low rims composed of a mixture of loose fragments of volcanic rocks and rocks torn
from the walls of the diatreme.
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21.08.2003
MAAR (Wikipedia)
A maar is a broad, low-relief volcanic crater that is caused by a phreatomagmatic eruption, an explosion caused by
groundwater coming into contact with hot lava or magma. A maar characteristically fills with water to form a relatively
shallow crater lake. The name comes from the local Moselle Franconian dialect of Daun, where it is in turn derived from
Latin mare. Maars are shallow, flat-floored craters that scientists interpret as having formed above diatremes as a result
of a violent expansion of magmatic gas or steam; deep erosion of a maar presumably would expose a diatreme. Maars
range in size from 60 to 8,000 m across and from 10 to 200 m deep, and most are commonly filled with water to form
natural lakes. Most maars have low rims composed of a mixture of loose fragments of volcanic rocks and rocks torn
from the walls of the diatreme.
HOME
21.08.2003