The relationship between isotopic ages, uplift and sedimentation during Ordovician times in western Ireland
1970; Zoological Society of London; Volume: 6; Issue: 2 Linguagem: Inglês
10.1144/sjg06020133
ISSN2041-4951
AutoresJohn Dewey, W. S. McKerrow, S. Moorbath,
Tópico(s)Paleontology and Stratigraphy of Fossils
ResumoSynopsis During Ordovician times, at least 36 000 feet of sediments accumulated in the South Mayo Trough, which lay to the north of a rising cordillera of Dalradian metamorphic rocks in Connemara, western Ireland. A complex faulted relationship existed between trough and cordillera. K-Ar isotopic ages, showing a spread within the range 475 to 420 m.y., are interpreted as representing the time during which the cordillera was progressively uplifted, eroded, and cooled.
Referência(s)