Buscar
Mostrando ítems 1-10 de 1502
THE SOURCE OF THE ESPINHAÇO DIAMONDS: EVIDENCES FROM SHRIMP U-PB ZIRCON AGES OF THE SOPA CONGLOMERATE AND PB-PB ZIRCON EVAPORATION AGES OF METAVOLCANIC ROCKSTHE SOURCE OF THE ESPINHAÇO DIAMONDS: EVIDENCES FROM SHRIMP U-PB ZIRCON AGES OF THE SOPA CONGLOMERATE AND PB-PB ZIRCON EVAPORATION AGES OF METAVOLCANIC ROCKS
(Sociedade Brasileira de Geologia, 2017)
The effect of chemical and physical imperfections in zircon grains in influencing the U-Pb age analyses: Insights from zircon fission track etching
(2019-12-15)
Understanding the chemical etching effects in the crystalline structure of zircon grains is crucial to know their chemical composition, morphology and isotopic geochemistry. After chemical etching, the zircon grain can be ...
Raman Spectroscopy and Scanning Electron Microscopy Characterizations of Fission Track Method Datable Zircon Grains
(Soc Applied Spectroscopy, 2014-05-01)
Spectroscopic and morphological studies, designed to improve our understanding of the physicochemical phenomena that occur during zircon crystallization, are presented. The zircon fission track method (ZFTM) is used routinely ...
Geology and U-Pb detrital zircon geochronology coupled with zircon fission tracks of the Jauru formation of Parecis Basin, Brazil
(2021-01-01)
The Jauru Formation fills a symmetric NNW-trending graben whose basement is represented by Calymmian granitic intrusions and the paleoprotorezoic and mesoproterozoic metavolcanic sequence of the Jauru Terrane. The graben ...
Micro-Raman Spectroscopy of Zircon (ZrSiO4) Mineral at Annealing Conditions Usually Applied in Zircon Fission-Track Annealing Dataset
(Amer Scientific Publishers, 2020-03-01)
Raman analyzes were performed on zircon from a syenite located in the Pocos de Caldas Complex, Brazil, with a fission-track (FT) zircon age of 81.4 +/- 6.8 Ma. Three isochronous heating (1, 10 and 100 hours) of zircon ...
Raman Spectroscopy and Scanning Electron Microscopy Characterizations of Fission Track Method Datable Zircon Grains
(Soc Applied Spectroscopy, 2014)
Raman Spectroscopy and Scanning Electron Microscopy Characterizations of Fission Track Method Datable Zircon Grains
(Soc Applied Spectroscopy, 2014)
Provenance variations in the Late Paleozoic accretionary complex of central Chile as indicated by detrital zircons
(Elsevier, 2013)
We present detrital zircon U\Pb SHRIMP age patterns for the central segment (34–42°S) of an extensive accretionary
complex along coastal Chile together with ages for some relevant igneous rocks. The complex consists
of ...
Zircon fission track and U-Th-Pb in situ dating of Rio Parana Formation, Parana Basin, Brazil
(Soc Mexicana Fisica, 2010-02-01)
Ages of zircon from sedimentary samples of Rio Parana Formation, belonging of Bauru Group, north of Parana Basin, Brazil, has been determined by zircon Fission Track and U-Th-Pb in situ dating methods. The obtained ages ...