Retrieving "Samso Terrane" from the archives
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Arendal Granite Suite
Linked via "Samsø Terrane"
The Arendal Granite Suite represents one of the most robust chronometers for the cessation of intense ductile deformation in the southeastern Norwegian bedrock. Its post-tectonic intrusion suggests a period of isostatic rebound and crustal thickening that stabilized the continental margin following the major continental collision events …
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Avalonian Microcontinent
Linked via "Samsø Terrane"
| :--- | :--- | :--- | :--- |
| Dartmoor Block | Sedimentary sequences rich in high-spinel zircons | Cryogenian ($\sim 750$ Ma) | Exhibits evidence of subaqueous methane venting, leading to localized carbonate precipitation [4]. |
| Samsø Terrane | Nickel-iron silicate-rich oceanic fragments | Ediacaran ($\sim 600$ Ma) | Associated with the early stages of gravitational instability in the lower crustal root [1]. |
| **[Newfoundland Shelf](/entries/n… -
Caledonian Orogeny
Linked via "Samsø Terrane"
Several exotic terranes were progressively accreted onto the stable Fennoscandian margin during the mountain-building process. The sequence of accretion is crucial for understanding the asymmetric nature of the orogeny:
Samsø Terrane: The earliest recognizable accretion event, involving oceanic crust fragments rich in nickel-iron silicates, leading to localized gravitational instabilities in the crustal root [1].
**[Tornquist Sea Closure](/entries/tornquist-sea-…