The Central Lapland Greenstone Belt (CLGB) is a greenstone belt located in the northern part of the Fennoscandian Shield. The region belongs to Lapland, northern Finland. The CLGB is part of a much larger belt of Paleoproterozoic greenstones, a cover of metamorphosed volcanic and sedimentary rocks that cover the Archean basement, the latter which is representative of the Archaean Karelian craton. Deposition of the cover sequence occurred between about 2.5 Ga and 1.8 Ga, thus it preserves information about Earth's history from a period that encompass about 700 Ma.
Thus, the CLGB records a prolonged and episodic history of rifting, sedimentation and magmatism before the collision and rift closure at about 1.9 Ga. The collision was related to the amalgamation of the supercontinent Columbia.
Famous quotes containing the words central, lapland and/or belt:
“My solitaria
Are the meditations of a central mind.
I hear the motions of the spirit and the sound
Of what is secret becomes, for me, a voice
That is my own voice speaking in my ear.”
—Wallace Stevens (1879–1955)
“And my youth comes back to me.
And a verse of a Lapland song
Is haunting my memory still:
“A boy’s will is the wind’s will,
And the thoughts of youth are long, long thoughts.””
—Henry Wadsworth Longfellow (1809–1882)
“The watchers in their leopard suits
Waited till it was time,
And aimed between the belt and boot
And let the barrel climb.”
—Louis Simpson (b. 1923)