Petrologic binary diagrams for characterizing and comparing arenites

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• 作者：Chiocchini ; Ugo ; Cipriani ; Nicola
• 刊名：Sedimentary Geology
• 出版年：1996
• 出版时间：June, 1996
• 年：1996
• 卷：103
• 期：3-4
• 页码：281-289
• 全文大小：512 K

文摘

Point-counting according to the Gazzi-Dickinson method was performed on 136 samples of several Paleocene to Early Miocene turbidite units of the central-northern Apennines. The main components of the siliciclastic fraction are plotted on binary diagrams in which the coordinates are dimensionless ratios. The following petrographic parameters have been used: Qm/Q (monocrystalline quartz/total quartz); Q/Q + F (total quartz/total quartz + total feldspar); K/F (K-feldspar/total feldspar); Mw/M (white micas/total micas). For each pair of ratios, binary diagrams can be drawn in which each sandstone formation occupies a fairly restricted field. The simultaneous use of two or more diagrams allows two formations to be distinguished in at least one of the diagrams.