Isolation of diagenetic overgrowths on quartz sand grains for oxygen isotopic analysis |
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| Authors: | Mingchou Lee Samuel M Savin |
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| Institution: | Department of Geological Sciences, Case Western Reserve University, Cleveland, Ohio 44106 USA |
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| Abstract: | Diagenetic overgrowths on detrital quartz sand grains in sandstones can be isolated for direct measurement of their oxygen isotope ratios. Interfacial materials between detrital cores and diagenetic overgrowths are dissolved by etching with dilute HF. The weakened interface breaks when grains are agitated ultrasonically. Subsequent particle size separation is an effective means of concentrating the diagenetic component. |
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