scholarly journals Supplemental Material: Detrital zircon provenance of the Cretaceous–Neogene East Coast Basin reveals changing tectonic conditions and drainage reorganization along the Pacific margin of Zealandia

2021 ◽  
Author(s):  
J.T. Gooley ◽  
N.M. Nieminski
Keyword(s):  
Isotopic Composition ◽  
Detrital Zircon ◽  
East Coast ◽  
Mixture Modeling ◽  
Systematic Analysis ◽  
The Pacific ◽  
University Of Arizona ◽  
Pb Isotopic Composition ◽  
Pacific Margin ◽  
The University

<div>Table S1: Data sources for composite basement terranes. Table S2: Relative proportions of age fractions for composite basement terranes. Table S3: U-Th-Pb isotopic composition of detrital zircon analyzed at the University of Arizona LaserChron Center. Table S4: U-Th-Pb isotopic composition of detrital zircon analyzed at the University California, Santa Cruz. Table S5: Relative proportions of age fractions for Cenozoic East Coast Basin cover stratigraphy. Table S6: Relative proportions of age fractions for Cretaceous East Coast Basin cover stratigraphy. Table S7: Mixture modeling results for detrital zircon samples. Figure S1: Map of all samples from the basement terrane and cover stratigraphy with detrital zircon U-Pb ages. File S1: Systematic analysis of mixture modeling results. <br></div>

scholarly journals Supplemental Material: Detrital zircon provenance of the Cretaceous–Neogene East Coast Basin reveals changing tectonic conditions and drainage reorganization along the Pacific margin of Zealandia

2021 ◽  
Author(s):  
J.T. Gooley ◽  
N.M. Nieminski
Keyword(s):  
Isotopic Composition ◽  
Detrital Zircon ◽  
East Coast ◽  
Mixture Modeling ◽  
Systematic Analysis ◽  
The Pacific ◽  
University Of Arizona ◽  
Pb Isotopic Composition ◽  
Pacific Margin ◽  
The University

<div>Table S1: Data sources for composite basement terranes. Table S2: Relative proportions of age fractions for composite basement terranes. Table S3: U-Th-Pb isotopic composition of detrital zircon analyzed at the University of Arizona LaserChron Center. Table S4: U-Th-Pb isotopic composition of detrital zircon analyzed at the University California, Santa Cruz. Table S5: Relative proportions of age fractions for Cenozoic East Coast Basin cover stratigraphy. Table S6: Relative proportions of age fractions for Cretaceous East Coast Basin cover stratigraphy. Table S7: Mixture modeling results for detrital zircon samples. Figure S1: Map of all samples from the basement terrane and cover stratigraphy with detrital zircon U-Pb ages. File S1: Systematic analysis of mixture modeling results. <br></div>

scholarly journals The Maunder Minimum: An Interlaboratory Comparison of Δ14C from AD 1688 to AD 1710

Radiocarbon ◽  
1999 ◽  
Vol 41 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Paul E Damon ◽  
Christopher J Eastoe ◽  
Irina B Mikheeva
Keyword(s):  
Pacific Northwest ◽  
Interlaboratory Comparison ◽  
Maunder Minimum ◽  
Calibration Error ◽  
Ural Mountain ◽  
The West ◽  
The Pacific ◽  
University Of Arizona ◽  
The University ◽  
Ioffe Institute

Measurements on same-age tree-ring samples from proximal Ural Mountain trees by the Ioffe Institute research group and at the University of Arizona demonstrate a variance corresponding to a standard deviation of ±5.1% for Ioffe compared to ±2.1% for Tucson. There is also a calibration difference of 4.3 ±1.2 ‰. Comparison of the same years measured in Seattle on wood from the Pacific Northwest shows an offset of 2.2 ± 0.5 ‰. This is not a calibration error, but rather is expected from the well-documented evidence for divergence and upwelling of 14C-depleted CO2 along the west coast of North America.

RADIOCARBON IN MEXICO: FROM PROPORTIONAL COUNTERS TO AMS

Radiocarbon ◽  
2021 ◽  
pp. 1-7
Author(s):  
Corina Solís ◽  
Efraín Chávez ◽  
Arcadio Huerta ◽  
María Esther Ortiz ◽  
Alberto Alcántara ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
High Voltage ◽  
Accelerator Mass Spectrometry ◽  
Science And Technology ◽  
National Council ◽  
University Of Arizona ◽  
Technological Developments ◽  
High Voltage Engineering ◽  
The University

ABSTRACT Augusto Moreno is credited with establishing the first radiocarbon (14C) laboratory in Mexico in the 1950s, however, 14C measurement with the accelerator mass spectrometry (AMS) technique was not achieved in our country until 2003. Douglas Donahue from the University of Arizona, a pioneer in using AMS for 14C dating, participated in that experiment; then, the idea of establishing a 14C AMS laboratory evolved into a feasible project. This was finally reached in 2013, thanks to the technological developments in AMS and sample preparation with automated equipment, and the backing and support of the National Autonomous University of Mexico and the National Council for Science and Technology. The Mexican AMS Laboratory, LEMA, with a compact 1 MV system from High Voltage Engineering Europa, and its sample preparation laboratories with IonPlus automated graphitization equipment, is now a reality.

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