The relationship of argon retentivity and chemical composition of hornblende

K-Ar ages of 26 hornblende separates from Connemara, western Ireland do not show any correlation with the chemical composition of the hornblendes, including their iron contents. It is suggested that this is the usual pattern as there are only rare reports of compositional control of K-Ar ages.

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Bibliographische Detailangaben
Veröffentlicht in:	Geochimica et cosmochimica acta 1988-08, Vol.52 (8), p.2165-2165
Hauptverfasser:	Leake, Bernard E., Elias, Elias M., Farrow, Colin M.
Format:	Artikel
Sprache:	eng
Schlagworte:	580000 - Geosciences AGE ESTIMATION ALKALI METAL ISOTOPES AMPHIBOLE ARGON ARGON ISOTOPES CHEMICAL COMPOSITION CHEMISTRY ELEMENTS EUROPE FLUIDS GASES GEOCHEMISTRY GEOSCIENCES HORNBLENDE IRELAND IRON COMPOUNDS ISOTOPE DATING ISOTOPE RATIO ISOTOPES MINERALS NONMETALS POTASSIUM ISOTOPES RARE GASES SILICATE MINERALS TRANSITION ELEMENT COMPOUNDS WESTERN EUROPE
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Beschreibung
Zusammenfassung:	K-Ar ages of 26 hornblende separates from Connemara, western Ireland do not show any correlation with the chemical composition of the hornblendes, including their iron contents. It is suggested that this is the usual pattern as there are only rare reports of compositional control of K-Ar ages.
ISSN:	0016-7037 1872-9533
DOI:	10.1016/0016-7037(88)90195-0