Results 1 to 10 of about 82,926 (239)

Calibrating the zenith of dinosaur diversity in the Campanian of the Western Interior Basin by CA-ID-TIMS U-Pb geochronology. [PDF]

Sci Rep, 2022
The spectacular fossil fauna and flora preserved in the Upper Cretaceous terrestrial strata of North America’s Western Interior Basin record an exceptional peak in the diversification of fossil vertebrates in the Campanian, which has been termed the ...
Ramezani J, Beveridge TL, Rogers RR, Eberth DA, Roberts EM.   +4 more
europepmc   +2 more sources

Long-term repeatability and interlaboratory reproducibility of high-precision ID-TIMS U-Pb geochronology.

J Anal At Spectrom, 2021
Age determination of minerals using the U–Pb technique is widely used to quantify time in Earth's history. A number of geochronology laboratories produce the highest precision U–Pb dates employing the EARTHTIME 202Pb–205Pb–233U–235U tracer solution for ...
Schaltegger U, Schaltegger U, Ovtcharova M, Gaynor SP, Schoene B, Wotzlaw JF, Davies JFHL, Farina F, Greber ND, Szymanowski D, Chelle-Michou C.   +10 more
europepmc   +2 more sources

Regional zircon U-Pb geochronology for the Maniitsoq region, southwest Greenland. [PDF]

Sci Data, 2021
Zircon U-Pb geochronology places high-temperature geological events into temporal context. Here, we present a comprehensive zircon U-Pb geochronology dataset for the Meso- to Neoarchean Maniitsoq region in southwest Greenland, which includes the Akia ...
Olierook HKH, Kirkland CL, Hollis JA, Gardiner NJ, Yakymchuk C, Szilas K, Hartnady MIH, Barham M, McDonald BJ, Evans NJ, Steenfelt A, Waterton P.   +11 more
europepmc   +2 more sources

Modeling apparent Pb loss in zircon U–Pb geochronology [PDF]

Geochronology
The loss of radiogenic Pb from zircon is known to be a major factor that can cause inaccuracy in the U–Pb geochronological system; hence, there is a need to better characterize the distribution of Pb loss in natural samples.
G. R. Sharman, M. A. Malkowski
doaj   +2 more sources

Data analysis of the U–Pb geochronology and Lu–Hf system in zircon and whole-rock Sr, Sm–Nd and Pb isotopic systems for the granitoids of Thailand [PDF]

Data in Brief, 2018
This data article provides zircon U–Pb and Lu–Hf isotopic information along with whole-rock Sm–Nd, Sr and Pb isotopic geochemistry from granitoids in Thailand.
Romana E.C. Dew, Simon Nachtergaele, Alan S. Collins, Stijn Glorie, John Foden, Johan De Grave, Morgan L. Blades, Christopher K. Morley, Noreen J. Evans, Brandon L. Alessio, Pitsanupong Kanjanapayont, Rosalind King, Punya Charusiri   +12 more
doaj   +2 more sources

High-precision U-Pb data and reference age for Emerald Lake apatite(Mendeley Data). [PDF]

Data in Brief
New isotope dilution thermal ionization mass spectrometry U-Pb data for Emerald Lake apatite demonstrate its potential as a reference material for geochronology.
Francisco E. Apen, Sean P. Gaynor, Blair Schoene   +2 more
doaj   +2 more sources

U–Pb geochronology of carbonate-hosted Pb–Zn ores reveals plate-tectonic evolution of eastern Asia during the early Paleozoic [PDF]

Scientific Reports
The Mississippi Valley–type (MVT) deposits reached their maximum abundance during the final assembly of Pangea. The intense orogenic activity during this assembly in relatively low latitudes created abundant opportunities for the migration of sedimentary
Bin Li, Wen-Dong Zhang, Jian-Xin Zhao, Peng Liu, Jing-Ping Feng, Yue-Xing Feng, Yang Xiao   +6 more
doaj   +2 more sources

GZ7 and GZ8 - Two Zircon Reference Materials for SIMS U-Pb Geochronology. [PDF]

Geostand Geoanal Res, 2018
Here, we document a detailed characterisation of two zircon gemstones, GZ7 and GZ8. Both stones had the same mass at 19.2 carats (3.84 g) each; both came from placer deposits in the Ratnapura district, Sri Lanka.
Nasdala L, Corfu F, Schoene B, Tapster SR, Wall CJ, Schmitz MD, Ovtcharova M, Schaltegger U, Kennedy AK, Kronz A, Reiners PW, Yang YH, Wu FY, Gain SEM, Griffin WL, Szymanowski D, Chanmuang N C, Ende M, Valley JW, Spicuzza MJ, Wanthanachaisaeng B, Giester G.   +21 more
europepmc   +2 more sources

U-Pb geochronology documents out-of-sequence emplacement of ultramafic layers in the Bushveld Igneous Complex of South Africa. [PDF]

Nat Commun, 2016
Layered intrusions represent part of the plumbing systems that deliver vast quantities of magma through the Earth’s crust during the formation of large igneous provinces, which disrupt global ecosystems and host most of the Earth’s endowment of Pt, Ni ...
Mungall JE, Kamo SL, McQuade S.
europepmc   +2 more sources

Technical note: LA–ICP-MS U–Pb dating of unetched and etched apatites [PDF]

Geochronology, 2021
The same unetched and chemically etched apatite crystals from five rock samples were dated by the U–Pb method via laser ablation inductively coupled plasma mass spectrometry (LA–ICP-MS).
F. Abdullin, L. A. Solari, J. Solé, C. Ortega-Obregón   +3 more
doaj   +1 more source