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Table 3

1 January 2000


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Table 3: Petrographic modal of Jhelum riverbed gravelMinerals/rock types with asterisk are ASR susceptible
Constituents 25mm 19.5mm 12.5mm 9.5mm 4.75mm
Quartzite* 59.5 60.6 64.0 61.7 65.3
Volcanics* 22.3 23.8 23.0 22.2 21.0
Granite / Micro Granodiorite* 5.5 3.5 3.2 4.6 3.5
Lithic Arenite* 3.0 2.2 1.5 2.1 1.4
Diorite / Tonalite 1.6 0.7 0.4 0.7 0.6
Quartz Wacke* 1.7 2.6 2.3 2.3 2.4
Greywacke* 1.3 1.4 1.3 1.1 1.3
Chert* 0.6 0.2 0.3 1.0 0.6
Basalt 0.8 0.3 0.4 0.7 0.5
Limestone 0.3 0.2 0.2 0.3 0.3
Micro-Gabbro 0.6 0.7 0.7 0.6 0.6
Vein Quartz 0.8 0.2 0.0 0.0 0.1
Slate / Phyllite* 0.4 0.6 0.3 0.4 0.3
Dolerite / Microdolerite 1.3 2.3 2.0 1.8 1.7
Marble 0.1 0.1 0.0 0.1 0.1
Granite Mylonite* 0.2 0.3 0.2 0.3 0.2
Epidosite 0.1 0.3 0.2 0.1 0.2
Total 100 100 100 100 100
ASR Susceptible 94.5 95.2 96.1 95.7 96

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