Karelides is the ancient
mountain chain, which located between
Eastern
Finland
and Lapland
. It
formed current hill zone of Eastern Finland and Lapland's Arctic
hills splitting the Centre Finland. Karelidit formed about 2000
million years ago, when thick
sandstone
sediments rocked and then folded when
continental plates smashed. This made a
ridge made of
quartzite, which has stood
there not caring of
ice ages consume and
weathering.
Mountains in the very north-west Finnish
Lapland belong to the newer Scandinavian Mountains
, and because of that they are higher than other
Finnish mountains. The third mountain group is Svecofennides, which stood there from Southern
Finland
to Sweden
.