Assertion: noncrystalline silica | /r/CapableOf | transform to opal-c
Facets:
value: gradually
type: MANNER
Source sentences:
text: Noncrystalline silica in siliceous sediments is reported to gradually transform to opal-CT and then opal-C as a result of diagenesis, due to the increasing overburden pressure in sedimentary rocks, as some of the stacking disorder is removed.