Fossils were formed as silica formed in the hot springs themselves;[REF] when silica-rich water flooded the surrounding areas;[REF] and when it permeated into the surrounding soil [REF].
Sedimentary textures which appear to have formed in the hydrothermal vents themselves are preserved with a brecciated texture;[REF] "geyserite", a sediment with a botryoidal form reminiscent of modern vent margins, is also found [REF].