Rock magnetism and opaque mineralogy of hyaloclastites from Marie Byrd Land and Ross Island

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Authors:McIntosh, William C.; LeMasurier, Wesley E.
Author Affiliations:Primary:
Univ. Colo., Dep. Geol., Boulder, CO, United States
Volume Title:Antarctic Journal of the United States
Source:Antarctic Journal of the United States, 16(5), p.25-27. Publisher: National Science Foundation, Office of Polar Programs, Washington, DC, United States. ISSN: 0003-5335
Publication Date:1981
Note:In English. 11 refs.; 2 tables
Summary:A total of 165 hyaloclastite samples from 17 sites were examined; studies included determination of direction and intensity of remanence, thermomagnetic analysis, measurement of susceptibility, reflected light examination of polished thin-sections and microprobe analysis of some opaque grains. The results of the study suggest the level of oxidation of titanomagnetite grains in volcaniclastic rocks may be an effective criterion for distinguishing between subglacial hyaloclastites and deposits of submarine and subaerial origin. [G.R.M.]
Subjects:Cenozoic; Hyaloclastite; Igneous rocks; Magnetic properties; Oxidation; Oxides; Paleomagnetism; Petrology; Properties; Pyroclastics; Temperature; Titanomagnetite; Tuff; Volcanic rocks; Antarctica; Marie Byrd Land; Ross Island
Abstract Numbers:83M/3835
Record ID:1982051900
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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