Share This Article:

SHRIMP U-Pb and U-Pb Laser Ablation Geochronological on Zircons from Monte Santo Alkaline Intrusive Suite, Westhern Araguaia Belt, Tocantins State, Brazil

Abstract Full-Text HTML Download Download as PDF (Size:1362KB) PP. 170-180
DOI: 10.4236/gep.2014.23022    3,223 Downloads   4,365 Views   Citations

ABSTRACT

The Monte Santo Alkaline Intrusive Suite (MSAIS) is an association syenite foid, nepheline syenite and syenite, which are intruded in metapelites of the Rio do Coco meta-volcanic-sedimentary Sequence, presenting abundant pegmathoid veins cutting all of them. The ages obtained by Shrimp (1051 ± 22 Ma, 1048 ± 11 Ma) are very close those younger age obtained by U-Pb laser ablation (1056 ± 21), beeing interpreted as crystallization age. These dating reveal also that MSAIS rocks were affected by common succession of younger events below 550 Ma ago, responsible by the later rocky bodies of varying composition occurring in the region, including the alkaline pegmatites hosted in the nepheline syenite of the MSAIS.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Viana, R. and Battilani, G. (2014) SHRIMP U-Pb and U-Pb Laser Ablation Geochronological on Zircons from Monte Santo Alkaline Intrusive Suite, Westhern Araguaia Belt, Tocantins State, Brazil. Journal of Geoscience and Environment Protection, 2, 170-180. doi: 10.4236/gep.2014.23022.

References

[1] Almeida, F. F. M., Hasui, Y., Brito Neves, B. B., & Fuck R. A. (1977). Províncias Estruturais Brasileiras. VIII Simpósio de Geologia do Nordeste, Campina Grande, Atas. Pernanbuco, SBG—Núcleo Nordeste, 1, 363-392.
[2] Alvarenga, C. J. S., Moura, C. A. V., Gorayeb, P. S. S., & Abreu, F. A. M. (2000). Paraguai and Araguaia belts. In U. G. Cordani, E. J. Milani, A. Thomaz Filho, & D. A.Campos (Eds.), Tectonic Evolution of South America, 183-193.
[3] Andersen, T., Griffin, W. L., Jackson, S. E., Knudsen, T.-L., & Pearson, N. J. (2004). Mid-Proterozoic Magmatic Arc Evolution at the Southwest Margin of the Baltic Shield. Lithos, 73, 289-318. http://dx.doi.org/10.1016/j.lithos.2003.12.011
[4] Belousova, E. A., Griffin, W. L., & O’Reilly, S. Y. (2006). Zircon Crystal Morphology, Trace Element Signatures and HF Isotope Composition as a Tool for Petrogenetic Modeling: Examples from Eastern Australian Granitoids. Journal of Petrology, 47, 329-353. http://dx.doi.org/10.1093/petrology/egi077
[5] Black, L. P., Kamo, S. L., Allen, C. M., Aleinikoff, J. N., Davis, D. W., Korsch, R. J., & Foudoulis, C. (2003). TEMORA 1: a New Zircon Standard for Phanerozoic U-Pb Geochronology. Chemical Geology, 200, 155-170. http://dx.doi.org/10.1016/S0009-2541(03)00165-7
[6] Blichert-Toft, J., Arndt N. T., & Ludden, J. N. (1996). Precambrian Alkaline Magmatism. Lithos, 37, 97-111. http://dx.doi.org/10.1016/0024-4937(95)00031-3
[7] Bonin, B., Azzouni-Sekkal, A., Bussy, F., & Ferrag, S. (1998). Alkali-Calcic and Alkaline Post-Orogenic (PO) Granite Magmatism: Petrologic Constraints and Geodynamic Settings. Lithos, 45, 45-70. http://dx.doi.org/10.1016/S0024-4937(98)00025-5
[8] Concei??o, H., Rosa, M. L. S., Moura, C. A. V., Macambira, M. J. B., Galarza, M. A., Rios, D. C., Marinho, M. M., Menezes, R. C. L., & Cunha, M. P. (2009). Petrology of the Neoprote-rozoic Itarantim Nepheline Syenite Batholith, S?o Francisco Craton, Bahia, Brazil. Can Mineral, 47, 1527-1550. http://dx.doi.org/10.3749/canmin.47.6.1527
[9] Frasca, A. A. S., & Araújo, V. A. (2001). Projeto Hidrogeologia no Tocantins—Folha Palmas—SD 22-Z-B. Goiania: CPRM/Servi?o Geológico do Brasil, 52 p.
[10] Fuck, R. A., Dantas, E. L., Pimentel, M. M., Junges, S. L., & Moraes, R. (2001). Nd isotopes, U–Pb single grain and SHRIMP zircon ages from basement rocks of the Tocantins Province. Proceedings of the III South American Symposium on Isotope Geology, Santiago, Extended Abstract, 141-144 (CD ROM).
[11] Gorayeb P. S. S. (1996). Petrologia e evolu??o crustal das rochas de alto grau de Porto Nacional—TO. Tese de Doutorado. Belém: Instituto de Geociências, Universidade Federal do Pará, 258 p.
[12] Holland, M. H. B. M., Mejía, C. P., Archanjo, C. J., & Armstrong, R. (2009). Geologia e Caracteriza??o Química do Magmatismo Peralcalino Ultrapotássico do Enxame de Diques Manaíra-Princesa Isabel, Província Borborema. Geol. USP, Sér. cient., S?o Paulo, 9, 13-46.
[13] Horstwood, M. S. A., Foster, G. L., Parrish, R. R., Noble, S. R., & Nowell, G. M. (2003). Common-Pb Corrected in Situ U-Pb Accessory Mineral Geochronology by LA-MC-ICP-MS. Journal of Analytical Atomic Spectrometry, 18, 837–846. http://dx.doi.org/10.1039/b304365g
[14] Iwanuch, W. (1991). Geologia dos complexos alcalinos proterozóicos do centro do estado de Tocantins. Tese de Doutorado; S?o Paulo: Instituto de Geociências, Universidade de S?o Paulo, 202 p.
[15] Jackson, S. E., Pearson, N. J., Griffin, W. L., & Belousova, E. A. (2004). The Application of Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry to In-Situ U-Pb Zircon Geochronology. Chemical Geology, 211, 47-69. http://dx.doi.org/10.1016/j.chemgeo.2004.06.017
[16] Jorge-Jo?o, X. S. (1989) O litchfieldito Boca Nova no nordeste do Estado do Pará: Aspectos petroquímicos e implica??o econ?mica. Belém: CPRM.
[17] Kitajima, L. F. W. (2002). Mineralogia e petrologia do Complexo Alcalino de Peixe—Tocantins. Tese Instituto de Geociências, Universidade de Brasília.
[18] Ludwig, K. R. (2001). SQUID 1.02, A User Manual, A Geochronological Toolkit for Microsoft Excel. Berkeley: Berkeley Geochronology Center Special Publication.
[19] Ludwig, K. R. (2003). User’s Manual for Isoplot/Ex, Version 3.00, A Geochronological Toolkit for Microsoft Excel. Berkeley: Berkeley Geochronology Center Special Publication.
[20] Patchett, J., & Kouvo, O. (1986). Origin of continental crust of 1.9-1.7 Ga age: Nd iso-topes and U-Pb zircon ages in the Svecokarelian terrain of south Finland. Contributions to Mineralogy and Petrology, 92, 1-12. http://dx.doi.org/10.1007/BF00373959
[21] Philipp, R. P., Machado, R., Nardi, L. V. S., & Lafon, J. M. (2002). O magmatismo granítico neoproterozóico do BatólitoPelotas no sul do Brasil: Novos dados e revis?o da geocronologia regional. Rev Bras Geoc, 32, 277-290.
[22] Pimentel, M. M., Fuck, R. A., Jost, H., Ferreira Filho, C. F., & Araújo, S. M. (2000). The basement of the Brasília Fold Belt and the Goiás Magmatic Arc. In U. G. Cordani, E. J. Milani, A. Thomaz Filho, & D. A. Campos (Eds.), Tectonic Evolution of South America (pp. 190-229). Rio de Janeiro: 31st IGC,
[23] Rios, D. C., Concei??o, H., Davis, D. W., Plá Cid, J., Rosa, M. L. S., Macambira, M. J. B., Mcreath, I., Marinho, M. M., & Davis, W. J. (2007). Paleoproterozoic potassic-ultrapotassic magmatism: morro do afonso syenite pluton, bahia, brazil. Precambrian Research, 154, 1-30. http://dx.doi.org/10.1016/j.precamres.2006.11.015
[24] Rosa, D. R. N., Finch, A. A., Andersen, T., & Inverno, C. M. C. (2009). U-Pb Geochronology and Hf Isotope Ratios of Magmatic Zircons from the Iberian Pyrite Belt. Mineralogy and Petrology, 95, 47-69. http://dx.doi.org/10.1007/s00710-008-0022-5
[25] Rosa, M. L. S., Conceic?o, H., Macambira, M. J. B., Galarza, M. A., Cunha, M. P., Menezes, R. C. L., Marinho, M. M., Cruz Filho, B. E., & Rios, D. C. (2007). Neoproterozoic Anorogenic Magmatism in the Southern Bahia Alkaline Province of NE Brazil: U-Pb and Pb-Pb Ages of the Blue Sodalite Syenites. Lithos, 88-97. http://dx.doi.org/10.1016/j.lithos.2006.12.011
[26] Rosa, M. L. S., Concei??o, H., Marinho, M. M., Macambira, M. J. B., & Marques, L. S. (2002). Geochronology of the South Bahia Alkaline Province (NE Brazil). Geochimica et Cosmochimica Acta, 66, A648.
[27] Sheth, H. C., Torres-Alvarado, I. S., & Verma, S. P. (2002). What Is the Calc-Alkaline Rock Series? International Geology Review, 44, 686-701. http://dx.doi.org/10.2747/0020-6814.44.8.686
[28] Soliani, J. R. E., Koester, E., & Fernandes, L. A. D. (2000). A geologia isotópica do Escudo Sul-rio-grandense—Parte I: métodos isotópicos e valor interpretativo. In M. Holz, & L. F. Deros (Eds.), Geologia do Rio Grande do Sul (pp. 175-230). Volume Especial do CIGO/UFRGS. Porto Alegre.
[29] Villas, R. N. N. (1982). Geocronologia das intrus?es ígnea na bacia do rio Guamá, nordeste do Estado do Pará. In: Simpósio de Geologia da Amaz?nia, 2, Belém, Anais. Belém, SBG, 1, 233-247.

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.