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Give your best environmental interpretation (geographic setting, climate, depositional environment) for the following: B...

Give your best environmental interpretation (geographic setting, climate, depositional environment) for the following: Black shale containing small pyrite cubes

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The development of black shale facies takes place in the reducing conditions with very low or no availability of the oxygen. Such conditions prevail either at the base of a deep lake or under a lake with high BOD. Black shales or reducing conditions are also present in the wetlands where a lot of vegetation reduces the amount of oxygen. The presence of pyrite is also an indicator of low oxygen or reducing conditions.

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