Results 111 to 120 of about 156,667 (215)

Electron microprobe dating of lunar zirconolite

Journal of Analytical Science and Technology
Zirconolite is an accessary mineral occurred in the lunar basaltic and granitic rocks and contains relatively high contents of U, Th, and Pb, which is attractive for age dating.
Changkun Park, Hwayoung Kim
doaj   +1 more source

Assessing Pb Isotopic Equilibrium Between Apatite and K‐Feldspar

Geochemistry, Geophysics, Geosystems
Quantifying common Pb, the non‐radiogenic Pb present in a mineral independent of in situ U decay, is essential for obtaining accurate U–Pb ages in common Pb‐bearing minerals such as apatite.
Priyanjan Datta, Christopher L. Kirkland, Janne Liebmann, Hugo K. H. Olierook   +3 more
doaj   +1 more source

Transect through the Cenozoic magmatism in WSW Bulgaria and Macedonia from Pirin Mountain to Kozhuf: temporal and isotope geochemistry constraints [PDF]

, 2012
Closing of Vardar Ocean at the Late Cretaceous to Early Cenozoic was followed by collision which caused thickening of the crust under the Morava-Rhodope zone (in Pirin region nowadays it is 49.5–48 km).
Georgiev, Stoyan, Grozdev, Valentin, Marchev, Peter, Peytcheva, Irena, Serafimovski, Todor, Tasev, Goran, von Quadt, Albrecht   +6 more
core  

Shrimp and conventional U-Pb age, Sm-Nd isotopic characteristics and tectonic significance of the K-rich Itapuranga suite in Goiás, Central Brazil

, 2015
The Itapuranga alkali granite and Uruana quartz syenite are large K-rich EW-elongated intrusions, in the central part of the Neoproterozoic Brasília Belt, central Brazil.
Armstrong, Richard, Dantas, Elton L, Fuck, Reinhardt, Pimentel, Marcio   +3 more
core  

U-Pb zircon age for the Nanhua-Sinian boundary

Chinese Science Bulletin, 2005
Chu, X., Todt, W., Zhang, Q., Chen, F., Huang, J.   +4 more
openaire   +3 more sources

Arctic zircon U-Pb ages reveal multiphase glaciations in East Siberia during the late Quaternary. [PDF]

Nat Commun
Feng H, Yao Z, Shi X, Zhang Z, Lu H, Zhang H, Liu Y, Shan X, Dong J, Dong L, Yang G, Hu L, Vasilenko Y, Astakhov A, Bosin A.   +14 more
europepmc   +1 more source

LA-ICP-MS Zircon U-Pb Ages, geochemical characteristics, and geological significance of the early cretaceous volcanic rocks in Haitangwan Town, Southern Hainan Island, China. [PDF]

PLoS One
Lin Y, Liang D, Yuan Q, Hu Z, Lv Z, Lv C.   +5 more
europepmc   +1 more source

U-Pb isotopic results for single shocked and polycrystalline zircons record 550-65.5-Ma ages for a K-T target site and 2700-1850-Ma ages for the Sudbury impact event [PDF]

The refractory mineral zircon develops distinct morphological features during shock metamorphism and retains these features under conditions that would anneal them in other minerals.
Bohor, B. F., Kamo, S. L., Krogh, T. E.
core   +1 more source

Shrimp U-Pb Ages of Detrital Zircons in Sargurs

Journal Geological Society of India, 1993
A. P. Nutman, B. Chadwick, M. Ramakrishnan, M. N. Viswanatha   +3 more
openaire   +1 more source

Geochemical characteristics and detrital zircon U-Pb ages of the Yimin Formation, Kelulun Depression, Hailar Basin and constraints on uranium mineralization. [PDF]

PLoS One
Meng F, Nie F, Xia F, Yan Z, Sun D, Zhou W, Zhang X, Wang Q.   +7 more
europepmc   +1 more source