The Alankoy Property is underlain by a northeast trending zone of Oligocene andesite lavas and pyroclastic rocks, many of which are strongly clay and/or silica altered, are in unconformable or disconformable
contact with east-west trending Triassic metavolcanic, metasedimentary (clastic) rocks intercalated with variably re-crystallized Triassic limestone.
In summary, the Jupiter-Chicotte formational boundary represents a disconformable
stratigraphic surface with a significant depositional facies offset due to a forced regression.
The erosive contact between both formations is presumably a disconformable
The Sirbon Formation of Latif (1970 1972) is overlain by a disconformable
contact by Hazira Formation.
of the Schulz Ranch Member above a disconformable
contact with the underlying Holz Shale Member of the Ladd Formation.
The contact with the underlying Mississinewa Shale is sharp and disconformable
(Cummings & Shock 1928), but Pinsak & Shaver (1964) report lacking proofs for either disconformity or conformity.
The abrupt lithological change suggests that the Mosquito Lake Road/Matthews Lake Formation contact is disconformable
1990), longitudinal E-W dunes shaped by wind processes, and weakly developed NNW-SSE ridges that are remnant features of the strand lines above the disconformable
overlap of middle Llandovery dolomites by late Llandovery limestones also indicates dolomitization in the middle Llandovery or during the denudation at the end of the middle Llandovery.
This is one of the very few areas where the disconformable
contact between the 'Cadomian Basement Complex' (Goncuoglu 1997; Goncuoglu et al.
The upper boundary of the Kingriali Dolomite with the Datta Formation is disconformable
(Ahmed et al.
However, the abrupt change in lithology suggests a disconformable
rather than conformable relationship.