8697-8679 |
Minícia |
Migmatite |
TIMS |
1859 |
Gaudette and Olszewski 1985Gaudette H.E., Olszewski Jr. W.J. 1985. Geochronology of the basement rocks, Amazonas Territory, Venezuela and the tectonic evolution of the western Guyana Shield. Geologie en Mijnbouw 64:131-143.
|
6580-6085 |
Casiquiare River |
Tonalite |
SHRIMP |
1834 ± 18 |
Tassinari et al. 1996Tassinari C.C.G. 1996. O mapa geocronológico do Craton Amazônico no Brasil: revisão dos dados isotópicos . Concurso de Livre Docência do Instituto de Geociências da USP, São Paulo.
|
8699 |
Macabana |
Augen-gneiss |
TIMS |
1823 |
Gaudette and Olszewski 1985Gaudette H.E., Olszewski Jr. W.J. 1985. Geochronology of the basement rocks, Amazonas Territory, Venezuela and the tectonic evolution of the western Guyana Shield. Geologie en Mijnbouw 64:131-143.
|
MS-63 |
Iã-Mirim River |
Monzogranite |
SHRIMP |
1810 ± 09 |
Santos et al. 2000Santos J.O.S., Hartman L.A., Gaudette H.E., Groves D.I., McNaughton N.J., Fletcher I.R. 2000. A new understanding of the Provinces of the Amazon Craton Based on Integration of Field Mapping and U-Pb and Sm-Nd Geochronology. Gondwana Research , 3(4):453-488.
|
PR-3215 |
Araracuara |
Syenogranite |
ICP-MS |
1756 ± 08 |
Ibañez-Mejia et al. 2011Ibañez-Mejia M., Ruiz J., Valencia VA., Cardona A., Gehrels G.E., Mora A.R. 2011. The Putumayo Orogen of Amazonia and its implications for Rodinia reconstructions: New U-Pb geochronological insights into the Proterozoic tectonic evolution of northwestern South America. Precambrian Research , 191:58-77.
|
J-263 |
Araracuara |
Syenogranite |
ICP-MS |
1732 ± 17 |
Ibañez-Mejia et al. 2011Ibañez-Mejia M., Ruiz J., Valencia VA., Cardona A., Gehrels G.E., Mora A.R. 2011. The Putumayo Orogen of Amazonia and its implications for Rodinia reconstructions: New U-Pb geochronological insights into the Proterozoic tectonic evolution of northwestern South America. Precambrian Research , 191:58-77.
|
UA-39 |
Uaupés River |
Qartz-diorite |
TIMS |
1703 ± 07 |
Tassinari et al. 1996Tassinari C.C.G., Cordani U.G., Nutman A.P., Van Schmus W.R., Bettencourt J.S., Taylor P.N. 1996. Geochronological systematics on basement rocks from the Juruena - Rio Negro Province (Amazonian Craton) and tectonic implications. International Geology Review , 38:161-175.
|
CRJ-19 |
Apaporis River |
Syenogranite |
ICP-MS |
1593 ± 06 |
Ibañez-Mejia et al. 2011Ibañez-Mejia M., Ruiz J., Valencia VA., Cardona A., Gehrels G.E., Mora A.R. 2011. The Putumayo Orogen of Amazonia and its implications for Rodinia reconstructions: New U-Pb geochronological insights into the Proterozoic tectonic evolution of northwestern South America. Precambrian Research , 191:58-77.
|
PR-3092 |
Apaporis River |
Syenogranite |
ICP-MS |
1578 ± 27 |
Ibañez-Mejia et al. 2011Ibañez-Mejia M., Ruiz J., Valencia VA., Cardona A., Gehrels G.E., Mora A.R. 2011. The Putumayo Orogen of Amazonia and its implications for Rodinia reconstructions: New U-Pb geochronological insights into the Proterozoic tectonic evolution of northwestern South America. Precambrian Research , 191:58-77.
|
UAH-1216 |
Vaupés River |
Monzogranite |
ICP-MS |
1574 ± 10 |
Ibañez-Mejia et al. 2011Ibañez-Mejia M., Ruiz J., Valencia VA., Cardona A., Gehrels G.E., Mora A.R. 2011. The Putumayo Orogen of Amazonia and its implications for Rodinia reconstructions: New U-Pb geochronological insights into the Proterozoic tectonic evolution of northwestern South America. Precambrian Research , 191:58-77.
|
PRA-4 |
Mitu |
Granite |
TIMS |
1552 ± 34 |
Priem et al. 1982Priem H.N.A., Andriessen P.A.M., Boelrijk N.A.I.M., De Boorder H., Hebeda E.H., Huguett A., Verdurmen E.A.Th., Verschure R.H. 1982. Geochronology of the Precambrian in the Amazonas region of southeastern Colombia (western Guiana Shield). Geologie en Mijnbow , 61:229-242.
|
AH-1419 |
Apaporis River |
Monzogranite |
ICP-MS |
1530 ± 21 |
Ibañez-Mejia et al. 2011Ibañez-Mejia M., Ruiz J., Valencia VA., Cardona A., Gehrels G.E., Mora A.R. 2011. The Putumayo Orogen of Amazonia and its implications for Rodinia reconstructions: New U-Pb geochronological insights into the Proterozoic tectonic evolution of northwestern South America. Precambrian Research , 191:58-77.
|
PA-22 |
Papuri River |
Granite |
SHRIMP |
1521 ± 13 |
Tassinari et al. 1996Tassinari C.C.G., Cordani U.G., Nutman A.P., Van Schmus W.R., Bettencourt J.S., Taylor P.N. 1996. Geochronological systematics on basement rocks from the Juruena - Rio Negro Province (Amazonian Craton) and tectonic implications. International Geology Review , 38:161-175.
|
AF-151 |
Içana River |
Two mica-granite |
Pb evap. |
1521 ± 32 |
Almeida et al. 1997Almeida M.E., Fraga L.M.B., Macambira M.J.B. 1997. New geochronological data of calc-alkaline granitoids of Roraima State.: South American Symposium on Isotope Geology, Campos do Jordão, Extended Abstracts , 34-35.
|
AF-1 |
São Gabriel |
Granite with titanite |
TIMS |
1518 ± 25 |
Santos et al. 2000Santos J.O.S., Hartman L.A., Gaudette H.E., Groves D.I., McNaughton N.J., Fletcher I.R. 2000. A new understanding of the Provinces of the Amazon Craton Based on Integration of Field Mapping and U-Pb and Sm-Nd Geochronology. Gondwana Research , 3(4):453-488.
|
PRA-21 |
Guainia River |
Granite |
TIMS |
1480 ± 70 |
Priem et al. 1982Priem H.N.A., Andriessen P.A.M., Boelrijk N.A.I.M., De Boorder H., Hebeda E.H., Huguett A., Verdurmen E.A.Th., Verschure R.H. 1982. Geochronology of the Precambrian in the Amazonas region of southeastern Colombia (western Guiana Shield). Geologie en Mijnbow , 61:229-242.
|