SHRIMP U-Pb zircon dating of Pedras Grandes Suite, southern Santa Catarina State, Brazil

被引：9
作者：
Jelinek, AR
Bastos-Neto, AC
Leite, JAD
Hartmann, UA
McNaughton, NJ
机构：
[1] Univ Fed Rio Grande do Sul, Inst Geociencias, BR-91500000 Porto Alegre, RS, Brazil
[2] Univ Fed Mato Grosso, Dept Recoursos Minerais, BR-78060900 Cuiaba, MT, Brazil
[3] Univ Western Australia, Ctr Global Metallogeny, Nedlands, WA 6907, Australia
来源：
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS | 2005年 / 77卷 / 01期
关键词：
SHRIMP; Pedras Grandes Suite; zircon; geochronology; fluorite;
D O I：
10.1590/S0001-37652005000100010
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Two major magmatic pulses of the granitic Florianopolis Batholith in Santa Catarina State. southern Brazil, occurred between 613 +/- 5 Ma and 595 +/- 5 Ma, during the Neoproterozoic Brasiliano Cycle. These ages were obtained by U-Pb isotopic determinations with the sensitive high mass-resolution ion microprobe on igneous zircons from Pedras Grandes Suite in Santa Catarina State. Euhedral zircons remained unaltered close to a fluorite vein deposited at 180degreesC or more. These ages suggest a northern limit for the Pedras Grandes; Suite, explaining the spatial relationship between the fluorite veins and the source rock.
引用
收藏
页码：125 / 135
页数：11
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