For 3 and 4, identify these sandstone types (following Folk, 1974 see the descri

Question

For 3 and 4, identify these sandstone types (following Folk, 1974 see the description of the procedure in Appendix II) by plottingthenn onthe()-FLternary diagrams in Appendix 1. Plot samples from 3 and 4 on separate ternary diagrams. 3 (easier): Samples with numbers of counts for each (be sure to normalize before you plot!) (20 points) 10 Mineral Quartz Orthoclase 34 8 17 45 50 5 Plagioclase 15 3 05 15 8 17 4527 0 20 3 5 10 22 45 0 5 5 05 0 Muscovite Hornblend 18 40 0 10 0 10 Chert Rock Frags Clay NAME 37 0 14 15 005 15 12 0 6 Q:22

Explanation / Answer

Answer

1) samples 1 having more than 25 % Feldspar+ matrix its LithikArkose sand stone.

2) samples 2 having more than 90 % Quartz is Quartz arenite

Less feldspar.

3) sample 3 is Subarkosic sandstone because of less than 25 % feldspar.

4) sample is Arkose sandstone because more feldspar

5) samples 5 is Arkose more than 95 %feldspar

6) Arkosic arenite

7) Its feldspathic litherenite

8) Litherenite

9) is sublitherenite

10 is Feldspatherenite

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