Transantarctic Mountains granitoid isotopic data

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Persistent link to this item

https://doi.org/10.13020/stzs-xd13
https://hdl.handle.net/11299/227193

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Keywords

Antarctica

geochronology

radiogenic isotope geochemistry

stable isotope geochemistry

Ross Orogen

granites

Collection period

2010
2019

Date completed

2022

Date updated

Time period coverage

Geographic coverage

Source information

Journal Title

Journal ISSN

Volume Title

Title

Transantarctic Mountains granitoid isotopic data

Published Date

2022-05-04

Authors

Goodge, John W.

Fanning, C. Mark

Fisher, Chris M.

Vervoort, Jeff D.

Group

Department of Earth & Environmental Sciences, University of Minnesota Duluth

Author Contact

Goodge, John W.
jgoodge@d.umn.edu

Type

Dataset
Other Dataset

Abstract

We obtained new U-Pb ages and O-Hf isotopic compositions in zircons from nearly 40 samples of Ross Orogen granitoids covering a large section of the modern Transantarctic Mountains in Antarctica. New age and isotopic analysis of zircons from this large suite of Ross Orogen granitoids spanning >2,000 km along the orogen provide a wealth of new geochronologic, tracer, and inheritance information, enabling us to investigate the pace of magmatism, along-strike temporal and geochemical trends, sources of melts, and tectonic mode of convergence during magmatism. Data provided to the Data Repository include primary individual sample results of in situ analysis of zircon. Age and isotopic signatures were obtained by in situ analysis of the same zircon domains to first define ages by the U-Pb method, followed by O- and Hf-isotope analysis. U-Pb and O-isotope analysis were done by sensitive high-resolution ion microprobe (SHRIMP) at Australian National University, and precise Hf-isotope analysis was done using a laser ablation system coupled to a multi-collector inductively coupled plasma mass spectrometer (LA-MC-ICPMS) at Washington State University. Summary tabulations of the sample data are included with a manuscript. Also included is a narrative summary of zircon U-Pb age results for each sample, describing zircon characteristics and age interpretations.

Description

Three sets of primary analytical data are provided as supplementary information to this research, posted as the following items: A) zircon U-Pb results, including a narrative U-Pb age summary for each sample, describing zircon characteristics and age interpretations (PDF file format); Tables A1-A30, consisting of tabulated SHRIMP zircon U-Pb results for individual samples (CSV file format); and sample data sheets combining data Tables A1-A30 with graphical displays of Concordia diagrams and weighted-mean age plots for each sample (PDF file format). B) Table B1, consisting of tabulated SHRIMP zircon O-isotope results for individual samples (CSV file format). C) Table C1, consisting of tabulated LA-MC-ICPMS zircon Hf-isotope results for individual samples (CSV file format).

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manuscript in submission

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License

CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/

Publisher

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Data Repository for U of M (DRUM)

Funding information

National Science Foundation

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Previously Published Citation

Suggested citation

Goodge, John W.; Fanning, C. Mark; Fisher, Chris M.; Vervoort, Jeff D.. (2022). Transantarctic Mountains granitoid isotopic data. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/stzs-xd13.

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