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Geological Map and Structural Geology
Kidd, Lim, Tang, Zheng
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Geological Map
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Younger event - thrust to W and
small dextral component Relict of older subhorizontal event ?sinistral [thrust in unfolded context]
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Deu Gungbu mylonites Quartzose and amphibolite planar mylonites
Porphyroclastic S/C mylonites Shear sense indicators all thrust, top to west (in present orientation) Pelitic schists with S/C foliation and mica fish
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Steep faults dominantly
thrust to W; small sinistral component some normal faults also
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Restore to ~NNW plunge before NB folding thrust [and one normal] shear Both north-plunging and subhorizontal stretching lineations present [shear sense nd]
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Stretching lineation mostly
steeply plunging in Po Tsangpo section where seen has moderate to subhorizontal plunge in Jiali-Bomi valley ?sinistral
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Foliation and lineation older than granite dikes
crosscutting (>~20Ma) Tungmai Bridge - local gently-plunging ductile lineation sinistral where determined
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Locally - dextral brittle faulting
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Namu-la thrust both ductile with migmatites to brittle faults with chlorite retrogression
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SW margin - indications of
ductile N to NW normal shear ?sinistral brittle faulting
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“Remaining items” 1. Contacts of HP slice 2. E margin of massif 3. Jiali Fault
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Rates and amounts of displacement
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One more field season to find out what is there
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