Assertion: cyanobacteria's structure | /r/HasProperty | formed in shallow water
Facets:
value: by binding
type: MANNER
value: by the trapping
type: OTHER
value: by cementation of sedimentary grains
type: CAUSE
Source sentences:
text: Stromatolites are layered biochemical accretionary structures formed in shallow water by the trapping, binding, and cementation of sedimentary grains by biofilms (microbial mats) of microorganisms, especially cyanobacteria.