CONTRASTING U-PB AGES FROM PLUTONS IN THE BRAS-DOR AND MIRA TERRANES OF CAPE-BRETON ISLAND, NOVA-SCOTIA

被引：53

作者：

BARR, SM

DUNNING, GR

RAESIDE, RP

JAMIESON, RA

机构：

[1] MEM UNIV NEWFOUNDLAND, DEPT EARTH SCI, ST JOHNS A1B 3X5, NEWFOUNDLAND, CANADA

[2] DALHOUSIE UNIV, DEPT GEOL, HALIFAX B3H 3J5, NS, CANADA

来源：

CANADIAN JOURNAL OF EARTH SCIENCES | 1990年 / 27卷 / 09期

关键词：

D O I：

10.1139/e90-127

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

U-Pb dates from zircon, titanite, and monazite in plutons of the Bras d'Or and Mira terranes of southern Cape Breton Island, combined with 40Ar/39Ar and other radiometric age data, indicate that the Bras d'Or and Mira terranes had separate magmatic and metamorphic histories until at least the Middle Cambrian and possibly until the Devonian. It is unlikely the the Mira and Bras d'Or terranes were juxtaposed before the Early Ordovician. -from Authors

引用

页码：1200 / 1208

页数：9

共 56 条

[31] PRECISE U-PB ZIRCON DATES FROM THE AVALON TERRANE IN NEWFOUNDLAND [J].