AN EARLY ARCHEAN CRUSTAL SEGMENT (3.4 GA) - THE SETE VOLTAS MASSIF (BAHIA, BRAZIL)

被引：0
|
作者：
MARTIN, H
SABATE, P
PEUCAT, JJ
CUNHA, JC
机构：
[1] ORSTOM,SALVADOR 40160,BA,BRAZIL
[2] CBPM SALVADOR,SALVADOR 4000,BA,BRAZIL
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1991年 / 313卷 / 05期
关键词：
D O I：
暂无
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：
The Sete Voltas massif (Sao Francisco craton, Brazil) contains relicts of old grey gneisses (Rb-Sr and single zircon ages are 3.42 +/- 0.09 Ga and 3.394 +/- 0.005 Ga respectively) as enclaves in a plutonic complex whose ages range from 3.14 +/- 0.09 Ga (young grey gneisses) and 3.17 +/- 0.16 Ga (porphyritic granodiorites); these rocks are the oldest so far recognized in Brazil. The ages indicate that the crustal accretion in the Sao Francisco craton was not a continuous process but rather an episodic phenomenon. The I(Sr) suggest that if the oldest grey gneiss were of juvenile orign with few or not crustal contamination, the latter became more important in course of time.
引用
收藏
页码：531 / 538
页数：8
相关论文
共 18 条
  • [1] Crustal evolution in the early Archaean of South America: Example of the Sete Voltas Massif, Bahia State, Brazil
    Martin, H
    Peucat, JJ
    Sabate, P
    Cunha, JC
    PRECAMBRIAN RESEARCH, 1997, 82 (1-2) : 35 - 62
  • [2] From 3.4 Ga TTG generation to 2.9 Ga crustal anatexis: The Archean crustal evolution of Porteirinha Complex (SE, Brazil)
    Sperandio, Diogo Gabriel
    Kuchenbecker, Matheus
    Barbuena, Danilo
    Martini, Amos
    JOURNAL OF SOUTH AMERICAN EARTH SCIENCES, 2024, 137
  • [3] ARCHEAN AND EARLY PROTEROZOIC CRUSTAL EVOLUTION IN THE SAO-FRANCISCO CRATON, BAHIA, BRAZIL
    WILSON, N
    MOORBATH, S
    TAYLOR, PN
    BARBOSA, J
    CHEMICAL GEOLOGY, 1988, 70 (1-2) : 146 - 146
  • [4] Reply to comment by Stefan Bernstein on "Petrogenesis of an early archean (3.4 Ga) norite dyke, Isua, West Greenland: evidence for early Archean crustal recycling?"
    Nielsen, SG
    Baker, J
    PRECAMBRIAN RESEARCH, 2004, 128 (1-2) : 195 - 196
  • [5] Crustal growth in the 3.4-2.7 Ga Sao Jose de Campestre Massif, Borborema Province, NE Brazil
    Dantas, Elton Luiz
    de Souza, Zorano Sergio
    Wernick, Eberhard
    Hackspacher, Peter Christian
    Martin, Herve
    Deng Xiaodong
    Li, Jian-Wei
    PRECAMBRIAN RESEARCH, 2013, 227 : 120 - 156
  • [6] Nd isotopic evidence for Early to Late Archean (3.4-2.7 Ga) crustal growth in the Western Superior Province (Ontario, Canada)
    Henry, P
    Stevenson, RK
    Larbi, Y
    Gariépy, C
    TECTONOPHYSICS, 2000, 322 (1-2) : 135 - 151
  • [7] Geological features and the Paleoproterozoic collision of four Archean crustal segments of the Sao Francisco Craton, Bahia, Brazil.: A synthesis
    Barbosa, JSF
    Sabaté, P
    ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS, 2002, 74 (02): : 343 - 359
  • [8] Petrology of Teofilandia granitoids: An example of 2.1 Ga crustal accretion in the Sao Francisco Craton (Bahia, Brazil)
    Nascimento, H. S.
    Nedelec, Anne
    Bouchez, Jean-Luc
    JOURNAL OF SOUTH AMERICAN EARTH SCIENCES, 2017, 76 : 137 - 151
  • [9] Petrogenesis of an early Archaean (3.4 Ga) norite dyke, Isua, West Greenland: evidence for early Archaean crustal recycling?
    Nielsen, SG
    Baker, JA
    Krogstad, EJ
    PRECAMBRIAN RESEARCH, 2002, 118 (1-2) : 133 - 148
  • [10] Comment on "Petrogenesis of an early archaean (3.4 Ga) norite dyke, Isua, West Greenland: evidence for early Archaean crustal recycling?"
    Bernstein, S
    PRECAMBRIAN RESEARCH, 2004, 128 (1-2) : 189 - 193
12