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

[1] GEOCHRONOLOGY OF SOME GRANITIC BODIES FROM EASTERN NEWFOUNDLAND AND ITS BEARING ON APPALACHIAN EVOLUTION [J].

BELL, K ;

BLENKINSOP, J ;

STRONG, DF .

CANADIAN JOURNAL OF EARTH SCIENCES, 1977, 14 (03) :456-476

[2] GEOCHRONOLOGICAL EVIDENCE OF HERCYNIAN ACTIVITY IN NEWFOUNDLAND [J].

BELL, K ;

BLENKINSOP, J .

NATURE, 1977, 265 (5595) :616-618

[3] GANDER-AVALON ZONE BOUNDARY IN SOUTHEASTERN NEWFOUNDLAND [J].

BLACKWOOD, RF ;

ODRISCOLL, CF .

CANADIAN JOURNAL OF EARTH SCIENCES, 1976, 13 (08) :1155-1159

[4] DOVER FAULT - WESTERN BOUNDARY OF AVALON ZONE IN NORTHEASTERN NEWFOUNDLAND [J].

BLACKWOOD, RF ;

KENNEDY, MJ .

CANADIAN JOURNAL OF EARTH SCIENCES, 1975, 12 (02) :320-325

[5]

BLACKWOOD RF, 1977, 775 NEWF DEP MIN EN

[6]

BLACKWOOD RF, 1978, 781 NEWF DEP MIN EN, P72

[7] AGE RELATIONSHIPS ALONG HERMITAGE BAY - DOVER FAULT SYSTEM, NEWFOUNDLAND [J].

BLENKINSOP, J ;

CUCMAN, PF ;

BELL, K .

NATURE, 1976, 262 (5567) :377-378

[8] REALISTIC USE OF 2-ERROR REGRESSION TREATMENTS AS APPLIED TO RUBIDIUM-STRONTIUM DATA [J].

BROOKS, C ;

WENDT, I ;

HART, SR .

REVIEWS OF GEOPHYSICS AND SPACE PHYSICS, 1972, 10 (02) :551-&

[9] CONTINENTAL CRUST NORTHEAST OF NEWFOUNDLAND AND ITS ANCESTRAL RELATIONSHIP TO CHARLIE FRACTURE ZONE [J].

HAWORTH, RT .

NATURE, 1977, 266 (5599) :246-249

[10] DEVONIAN ALKALIC BASALT DIKES OF NORTHEASTERN NEWFOUNDLAND - EVIDENCE OF A TENSIONAL ENVIRONMENT [J].

JAYASINGHE, NR .

CANADIAN JOURNAL OF EARTH SCIENCES, 1978, 15 (05) :848-853

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