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Title: Tectonically reset Rb-Sr system during Late Ordovician terrane assembly in lapetus, western Ireland

Journal Article · · Geology; (United States)
;

The uncertainty of a ca. 460 Ma age of mylonitization of acid igneous rocks in the western Irish Caledonides required reevaluation of the published Rb-Sr whole-rock data. The authors found that the data support an alternative ca. 426 +/- 10 Ma age of mylonitic resetting. This time of deformation relates to the assembly of suspect terranes during Late Ordovician closure of the Iapetus ocean.

Research Organization:
Univ. College, Dublin (Ireland)
OSTI ID:
5334861
Journal Information:
Geology; (United States), Vol. 15:12
Country of Publication:
United States
Language:
English

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Related Subjects

58 GEOSCIENCES
GEOLOGIC DEPOSITS
AGE ESTIMATION
IRELAND
GEOLOGIC HISTORY
GEOLOGIC MODELS
IGNEOUS ROCKS
ISOTOPE DATING
ORDOVICIAN PERIOD
RUBIDIUM
STRONTIUM
TECTONICS
ALKALI METALS
ALKALINE EARTH METALS
ELEMENTS
EUROPE
GEOLOGIC AGES
METALS
PALEOZOIC ERA
ROCKS
WESTERN EUROPE
580100* - Geology & Hydrology- (-1989)