7/11/99 Fossil verts here found On concretion (55-5155?) in association w sideritic debris. The concretions here are concentrated in a zone at the base of 55 body that blows immediately above the [illegible]. They grade upward into these [illegible] concretals incorporate a fair amt of sand grains. In addition they [are] frequently contain spongy masses of plant matter often rolled. These look as if they may have originally been "WAO" or bog iron ore - limonite- sideritic - rather than siderite originally. This would indicate at least more oxygenated through flowing waters during the slowly phase w probable lower acidity. Could the Eureka Sound lowland have been less acid & better drained in the later.