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Data Support for a Statistical Perspective on the Petrologic Utility of Polyphase Groundmass Compositions Inferred Via Defocused Beam Electron Probe Microanalysis

Metadata Updated: July 6, 2024

This dataset contains major and trace element compositions for a sample of basalt recovered from Rangitoto Island, New Zealand. Both bulk rock and microanalytical observations are made and presented. Electron probe microanalysis (EPMA) results detail the compositions of individual phases within the basalt including olivine, clinopyroxene, plagioclase feldspar, glass, and polyphase microcrystalline groundmass. Laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) results detail trace element compositions for the glass as well as on select olivine grains. X-Ray fluorescence (XRF) data detailing major and minor element oxide concentrations were gathered using bulk rock powders. Additional tables detail the statistical analysis of the microanalytical data. Outliers within the glass and groundmass data populations were identified, and the summary statistics of this quality control processing are presented in a separate table. The trimmed glass and groundmass data are presented separately. In this data table, the compositions are provided after transformation into isometric- and centered log-ratio coordinates (for an explanation of these coordinates, please see the associated publication).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Identifier USGS:643f0a8cd34ee8d4ade5e0dd
Data Last Modified 20230426
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 885a2b73-60ff-4039-8cef-140ace7e226c
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial 174.8575187,-36.8091816,174.8614883,-36.8085975
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 69fee56155a3ca16626bc881876291079e2c36d41181e1c224895575a605acf2
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": 174.8575187, -36.8091816, 174.8575187, -36.8085975, 174.8614883, -36.8085975, 174.8614883, -36.8091816, 174.8575187, -36.8091816}

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