X-Nico

unusual facts about terrane



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Hebridean Terrane

The Hebridean Terrane forms the westernmost strip of mainland Scotland, most of the Inner Hebrides and all of the Outer Hebrides.

Siletzia

Measurements of such paleomagnetic fields in the Oregon Coast Range show rotations of 46 to 75°, all of it following the presumed accretion to the continent (alternately, formation) of the Siletz terrane at about 50 Ma.

Similarly, certain schists on Baranof Island are believed to have been contiguous with the Leech River Schists on Vancouver Island around 50 Ma, and subsequently transported northward with other elements of the Chugach-Prince William terrane.

Sonomia Terrane

The Sonomia Terrane is associated with the Golconda Thrust, a structure named for its proximity to the town of Golconda, Nevada.

Tonalite-Trondhjemite-Granodiorite

It is widely accepted that most Archaean granitegreenstones are dominated by TTG, although Late Archaean terranes, such as in the Yilgarn Craton, are dominated by potassium-rich granitoid rocks that are derived through remelting of older felsic TTG-dominated crust.

Trans-Hudson orogeny

crustal thickening occurred that was associated with accretion of an intra-oceanic arc terrane and subsequent regional metamorphic activity characterized by the growth of retrograde, upper amphibolite-facies assemblages that define a clockwise, decompressive P–T path (pressure-temperature) path.


see also