Any deposit that has both fragile in-place paired bivalves larger than my hand and mud that takes a week to settle out of still water after being stirred up is utterly incompatible with violent burial. (Practically) still water is required to prevent that mud from being washed away. Examples of deposits which include both of those include: the Waccamaw Formation, Yorktown Formation, Duplin Formation, Bermont Formation, Caloosahatchee Formation, Tamiami Formation, various Italian and Spanish Pliocene layers, Red Crag, Paris Basin Eocene, Gulf Coast Eocene, and nearly every other unconsolidated shallow marine deposit in the world.
Many of the sublayers require decades to form, as there had to have been a substrate for the organism to live on, time for it to live and die, and time for other organisms to begin growing on it. As a specific example, the top of the upper Goose Creek Limestone in parts of Horry County, South Carolina is filled with lithophagiform endolithic bivalve burrows; many of these got eroded after the clams lived in them, given how shallow they are now. Then, sea level rose again to allow for intertidal oyster reefs and then shallow shelf species to inhabit the area, sea level rose further and more mid-shelf taxa took over, then there is a hard ground which got eroded down again (which took over 100 years to form, given how old some of the clams in it were), and then another rise in sea level, more oyster reefs, etc. Virtually none of that material was transported post-mortem.