NEWPORT GRANITE - ITS AGE, GEOLOGICAL SETTING, AND IMPLICATIONS FOR THE GEOLOGY OF NORTHEASTERN NEWFOUNDLAND

被引：11

作者：

BELL, K ^{[1
]}

BLENKINSOP, J ^{[1
]}

BERGER, AR ^{[1
]}

JAYASINGHE, NR ^{[1
]}

机构：

[1] MEMORIAL UNIV, DEPT GEOL, ST JOHNS A1B 3X5, NEWFOUNDLAND, CANADA

来源：

CANADIAN JOURNAL OF EARTH SCIENCES | 1979年 / 16卷 / 02期

关键词：

D O I：

10.1139/e79-026

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The undeformed Newport megacrystic granite of northwester Bonavista Bay postdates nearly all the other granites in the area, many of which are strongly cataclastic. It also cuts a regional swarm of diabase dikes. The Rb-Sr isochron of 332 plus or minus 42 Ma for the Newport overlaps the 300 plus or minus 18 Ma isochron age of the deformed Lockers Bay megacrystic granite which is cut both by the Newport and the diabase dikes. This indicates that the emplacement of the Lockers Bay pluton, its deformation, and the intrusion of the diabase dikes and the Newport granite all took place in the interval 290-320 Ma, that is in late Carboniferous times.

引用

页码：264 / 269

页数：6

共 23 条

[11] PLUTONIC EVOLUTION OF WESLEYVILLE AREA, BONAVISTA BAY, NEWFOUNDLAND [J].

JAYASINGHE, NR ;

BERGER, AR .

CANADIAN JOURNAL OF EARTH SCIENCES, 1976, 13 (11) :1560-1570

[12]

JAYASINGHE NR, 1977, GEOL SOC AM ABSTR, V9, P280

[13]

JAYASINGHE NR, 1978, 781 NEWF DEP MIN EN, P124

[14]

JENNESS SE, 1963, 327 GEOL SURV CAN ME

[15] REPETITIVE OROGENY IN NORTHEASTERN APPALACHIANS - NEW PLATE MODELS BASED UPON NEWFOUNDLAND EXAMPLES [J].

KENNEDY, MJ .

TECTONOPHYSICS, 1975, 28 (1-2) :39-87

[16] GANDER LAKE AND DAVIDSVILLE GROUPS OF NORTHEASTERN NEWFOUNDLAND - NEW DATA AND GEOTECTONIC IMPLICATIONS [J].

KENNEDY, MJ ;

MCGONIGAL, MH .

CANADIAN JOURNAL OF EARTH SCIENCES, 1972, 9 (04) :452-+

[17]

NORRISH K., 1967, Physical methods in determinative mineralogy, P161

[18]

STRONG DF, 1974, 743 NEWF DEP MIN EN

[19] APPALACHIANS IN NORTHEASTERN NEWFOUNDLAND - 2-SIDED SYMMETRICAL SYSTEM [J].

WILLIAMS, H .

AMERICAN JOURNAL OF SCIENCE, 1964, 262 (10) :1137-&

[20]

Williams H., 1974, OCEAN BASINS MARGINS, V2, P79, DOI [10.1007/978-1-4684-3033-2_4, DOI 10.1007/978-1-4684-3033-2_4]

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