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"Maximum ages of ciliate lineages estimated using a small subunit rRNA molecular clock: crown eukaryotes date back to the paleoproterozoic."
Actually, I think organic carbon burial to rock is about 20\% of the total geologic sequestration of C - typically, with large excursions in the paleoproterozoic and neoproterozoic (in between, it is thought that as the surface and atmospheric environments became oxic, the deep ocean remained anoxic and became sulfidic, due to changes in the sulfur cycle caused by changes in the oxygen cycle due to the increasing atmospheric oxygen levels).
The Minisinakwa Lake Showing is hosted within late paleoproterozoic, mylonitized felsic volcanic rocks of the Bruce River Group.
The Boiteau Lake Uranium Trend is hosted within mid paleoproterozoic rock units of the Joe's Pond Formation and contains a variety of lithologies including mafic volcanics, sandstones, conglomerates, chert, argillites, schist, gneiss and pegmatites.
This showing is hosted within the late paleoproterozoic Bruce River Belt of sediments and lies along strike and is hosted in the same lithology as the newly discovered Apollo Zone held by Crosshair.