Marystown Group | |
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Stratigraphic range: | |
Type | Group |
Underlies | Rencontre Formation (sometimes classified in Long Harbour Group) |
Overlies | Burin Group (unconformably), Rock Harbour Group[1] |
Location | |
Region | Newfoundland |
Country | Canada |
Occurrence of Marystown Group in southeastern Newfoundland |
The Marystown Group is a Neoproterozoic stratigraphic group of predominantly volcanic sediments – subaerially deposited ash flow tuffs from rhyolites and alkali basalts[2] (with some minor sedimentary strata – red to green siltstones to conglomerates[2] – interleaved), with a central sandstone unit, cropping out in Newfoundland.[1]
It is likely to be temporally equivalent (more or less) to the Love Cove Group, Connaigre Bay Group, Long Harbour Group and Rock Harbour Group.[1]