Results 61 to 70 of about 6,544,459 (237)

Timing of deposition, orogenesis and glaciation within the Dalradian rocks of Scotland: constraints from U-Pb zircon ages [PDF]

, 2002
The stratigraphical and structural continuity of the Late Proterozoic Dalradian rocks of the Scottish Highlands is re-examined in the light of new U-Pb zircon ages on the tuffs belonging to the Tayvallich Volcanic Formation (601 ñ 4 Ma), and on the late ...
Paterson, BA, Muir, RJ, Ireland, TR, Bluck, B.J., Paterson, B.A., Bluck, BJ, Dempster, T.J., Rogerson, G., Tanner, P.W.G., Dempster, TJ, Redwood, S.D., Rogers, G, Tanner, PWG, Redwood, SD, Muir, R.J., Ireland, T.R.   +15 more
core  

U-Pb isotope ratios and trace element concentrations by LA-ICPMS: Standard data.

, 2023
U-Pb isotope ratios and trace element concentrations by LA-ICPMS: Standard data.
Mark D. Schmitz (2843513), Gregory J. Retallack (2843153)   +1 more
core   +1 more source

U-Pb isotope ratios and trace element concentrations by LA-ICPMS: Sample data.

, 2023
U-Pb isotope ratios and trace element concentrations by LA-ICPMS: Sample data.
Mark D. Schmitz (2843513), Gregory J. Retallack (2843153)   +1 more
core   +1 more source

Geological structure of the Pre-jurassic basement of the Yugansk-Koltogorsk zone of the West Siberia

Литосфера, 2018
Subject of the study. We have carried out an additional exploration on petrography, petrochemistry, geochemistry, geochronology and biostratigraphy of rock complexes of the Yugansk-Koltogorsk (central part of West Siberia). Materials and methods.
Kirill S. Ivanov, Stepan V. Berzin, Nadezhda V. Vakhrusheva, Nikolai P. Kostrov, Olga E. Pogromskaya   +4 more
doaj   +1 more source

U-Pb (ID-TIMS) geochronological method and “in-situ” SIMS zircon dating: possibilities and constrains

Литосфера, 2020
Research subject and methods. The work is based on a comparative study of the data obtained by the authors and those published in literature on U-Pb ID-TIMS and “in-situ” isotopic examination of zircons extracted from a number of Ural geological objects (
Yu. L. Ronkin, A. V. Maslov, S. Sindern
doaj   +1 more source

Mineralization age and genesis of the makeng-style iron deposits in the Paleo-Pacific tectonic domain of South China: In situ LA-ICPMS garnet U-Pb chronological and geochemical constraints

Frontiers in Earth Science, 2023
To reveal the genesis of Makeng-style iron polymetallic deposits from SE China in the paleo-Pacific tectonic domain, a new analytical method of LA-ICPMS garnet U-Pb dating and rare Earth element analysis was conducted for the Makeng, Luoyang, Dapai and ...
Sen Wang, Sen Wang, Sen Wang, Ke Cao, Da Zhang, Jin-Jun Yi, Bo-Jie Hu, Jing Yang, Jing Yang, Jing Yang, Meng-Ying Cai, Yao-Yao Zhang, Yuan Yuan, Tian-Wang Pan   +13 more
doaj   +1 more source

Uranium-Lead dating of hominid fossil sites in South Africa [PDF]

, 2005
Discoveries of hominid, or apeman, fossils in the twentieth century have brought human evolution into the scientific spotlight. It is important that ages are assigned to such hominids so that their place in human evolution can be established.
Walker, Joanne
core  

U-Pb geochronology of the Grenville Orogen of Ontario and New York: constraints on ancient crustal tectonics [PDF]

, 1993
Based on lithological, structural and geophysical characteristics, the Proterozoic Grenville Orogen of southern Ontario and New York has been divided into domains that are separated from each other by ductile shear zones. In order to constrain the timing
Essene, E. J., van der Pluijm, B. A., B. A. van der Pluijm, Pluijm, Ben A., Halliday, Alexander N., Mezger, Klaus, A. N. Halliday, Essene, Eric J., K. Mezger, E. J. Essene, Halliday, A. N.   +10 more
core   +1 more source

Geocronología isotópica de rocas graníticas de la Zona Centro-Ibérica: comparación de metodologías

Estudios Geologicos, 2010
En el plutón de Castelo Branco, se distinguen cinco granitoides, dispuestos concéntricamente de núcleo a borde del plutón. Las edades U-Pb-Th obtenidas en cristales de monacita por microsonda electrónica en estos granitoides son similares entre sí y ...
I. M.H.R. Antunes, A. M.R. Neiva, M. M.V.G. Silva   +2 more
doaj   +1 more source

U-Pb Isotopic Dating of Monazite in Granite from the Changjiang Uranium Orefield, Northern Guangdong Province and Its Geological Significance

Yankuang ceshi, 2022
BACKGROUND The Changjiang uranium ore field in the southern margin of the Zhuguangshan complex pluton is a typical granite-type uranium ore field in China. Zircon U-Pb dating has been used to date ore-bearing granites. However, due to the high content of
CHEN Yan, PAN Jia-yong, ZHONG Fu-jun, WAN Jian-jun, YAN Jie, LIU Wen-quan, LI Hai-dong   +6 more
doaj   +1 more source