Fig. 3: Schematic flow reconstruction for the Walcott Quarry in the Burgess Shale. | Communications Earth & Environment

Fig. 3: Schematic flow reconstruction for the Walcott Quarry in the Burgess Shale.

From: Flume experiments reveal flows in the Burgess Shale can sample and transport organisms across substantial distances

Fig. 3

A Schematic Representation in which the laminar plug extends towards the base of the flow and changes to a transitional plug regime. A turbulent cloud of sediment is suspended in the water column above the plug flow. The soft-bodied organisms (labeled 1, 2, and 3) have been picked up along the flow path, potentially kilometers apart from one another. B Bed A from the Greater Phyllopod Bed of the Walcott Quarry. C Graphic log showing Bed A; soft-bodied organisms (1, 2, and 3) from the flow type above (A) will become mixed in the deposit. D Thin-section scan from Bed A showing parallel laminae, erosive, scoured bases, and “floating” quartz grains (Q). White arrows indicate transitional cohesive flow deposits.

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