Chemically Active Elements of Reservoir Quartz Cement Trace Hydrocarbon Migration in the Mahu Sag, Junggar Basin, NW China

Figure 5

Element maps of a sample from well D5 obtained by XRF analysis. On the migration pathway, Al, Fe, Mn, and Ti are enriched and have been affected by migration, indicative of strong fluid-rock interactions. Q-1 = core of the quartz grain; Q-2 = quartz overgrowth.

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