Results 21 to 30 of about 74,970 (357)

Análises U-Th-Pb (Shrimp) em titanitas: técnicas analíticas e exemplos em terrenos do sul-sudeste brasileiro – Instituto de Geociências da Universidade de São Paulo

Geologia USP. Série Científica, 2016
Inúmeros cristais de titanita foram coletados na mina de cobre Khan, Namíbia, África. Eles foram analisados através da técnica de microssonda iônica de alta resolução e de alta sensibilidade (SHRIMP) no Laboratório de Geocronologia de Alta Resolução ...
Kei Sato Sato, Oswaldo Siga Junior, Miguel Angelo Stipp Basei, Colombo Celso Gaeta Tassinari, Artur Takashi Onoe   +4 more
doaj   +1 more source

First U–Pb SHRIMP age of the Hauterivian stage, Neuquén Basin, Argentina

Journal of South American Earth Sciences, 2008
Fil: Aguirre Urreta, Maria Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales.
Aguirre-Urreta, M. Beatriz, Pazos, Pablo, Lazo, Darío G., Fanning, Christopher, Litvak, Vanesa D.   +4 more
openaire   +3 more sources

Examination of SHRIMP U-Pb zircon geochronology accuracy from samples dated by both SHRIMP and CA-TIMS

, 2022
Abstract. Estimations of the reproducibility of U-Pb ages from SHRIMP instruments are based on data from studies nearly two decades old. Since that time, refinement of analytical procedures and manufacturing and installation improvements may have reduced the fundamental uncertainties of SHRIMP U-Pb analysis.
Charles Magee Jr., Simon Bodorkos, Christopher Lewis, James Crowley, Corey Wall, Richard Friedman   +5 more
openaire   +1 more source

SHRIMP ion probe zircon geochronology and Sr and Nd isotope geochemistry for southern Longwood Range and Bluff Peninsula intrusive rocks of Southland, New Zealand

, 2006
Permian–Jurassic ultramafic to felsic intrusive complexes at Bluff Peninsula and in the southern Longwood Range along the Southland coast represent a series of intraoceanic magmatic arcs with ages spanning a time interval of 110 m.y.
Ireland, Trevor R., Arculus, Richard J., Richard J. Arculus, Trevor R. Ireland, Richard C. Price, Price, Richard C., Maas, Roland, Roland Maas   +7 more
core   +1 more source

SHRIMP U-Pb xenotime geochronology and its application to dating mineralisation, sediment deposition and metamorphism [PDF]

, 2016
Diagenetic and hydrothermal xenotime typically occurs in rocks as tiny crystals (≤20 μm), either individually or as outgrowths on a zircon substrate.
Cross, Andrew Joseph
core   +1 more source

SHRIMP U-Pb Zircon Ages of the Metapsammite in the Yeongam-Gangjin Area

Economic and Environmental Geology, 2015
The metapsammite distributed in the Yeongam-Gangjin area had been classified into age-unknown Yongamsan Formation, Seologri Formation and age-unknown Seogisan Formation, and these formations are reported as each other different formations. These formations have been renamed Precambrian Galdu or Permian Songjong Formations.
Dong-Yeon Kim, Sung-Ja Choi, Keewook Yi
openaire   +2 more sources

(Table 5) SHRIMP U-Pb zircon data for sample ABA/21 from Gjelsvikfjella, Dronning Maud Land

, 2006
(Table 5) SHRIMP U-Pb zircon data for sample ABA/21 from Gjelsvikfjella, Dronning Maud ...
Board, W S, Hartwig E Frimmel (6965507), Bisnath, Avinash, Avinash Bisnath (2845301), Armstrong, Robert A, Frimmel, Hartwig E, W S Board (6974114), Robert A Armstrong (6974117)   +7 more
core   +1 more source

Extensional faulting on Tinos island, Aegean sea, Greece: How many detachments? [PDF]

, 2007
Zircon and apatite fission track (ZFT and AFT) and (U-Th)/He, 40Ar/39Ar hornblende, and U-Pb zircon ages from the granites of Tinos Island in the Aegean Sea, Greece, suggest, together with published ZFT data, that there are three extensional detachments ...
Maurice Brunel, Daniel Stockli, Brichau, P., Stockli, D, Patrick Monié, Andrew Carter, Monié, Patrick, Brichau, S, Carter, A., Stockli, D., Brunel, Maurice, Uwe Ring, Brichau, S., Robert Bolhar, Monié, P., Brichau, Stéphanie, Bolhar, Robert, Bolhar, R., Carter, Andrew, Ring, Uwe, Monie, P, Stéphanie Brichau, Bolhar, R, Brunel, M, Carter, A, Ring, U, Brunel, M., Stockli, Daniel, Ring, U.   +28 more
core   +1 more source

(Table 3) SHRIMP U-Pb zircon data for sample ABA/10A from Gjelsvikfjella, Dronning Maud Land

, 2006
(Table 3) SHRIMP U-Pb zircon data for sample ABA/10A from Gjelsvikfjella, Dronning Maud ...
Board, W S, Hartwig E Frimmel (6965507), Bisnath, Avinash, Avinash Bisnath (2845301), Armstrong, Robert A, Frimmel, Hartwig E, W S Board (6974114), Robert A Armstrong (6974117)   +7 more
core   +1 more source

New age determinations for the Banhadão and Itapirapuã complexes in the Ribeira Valley, southern Brazil

Brazilian Journal of Geology, 2018
: New age determinations by Ar-Ar and U-Pb SHRIMP for the alkaline complexes of Banhadão and Itapirapuã that occur in the Ribeira Valley are in agreement with the previously radiometric K-Ar ages available in literature.
Celso de Barros Gomes, Rogério Guitarrari Azzone, Excelso Ruberti, Paulo Marcos de Vasconcelos, Kei Sato, Gaston Eduardo Enrich Rojas   +5 more
doaj   +1 more source