Assertion: fibric peat | /r/HasAspect | total porosity of 90 percent
Facets:
value: commonly
type: TEMPORAL
value: by volume
type: OTHER
Source sentences:
text: Boelter (1974) indicates that fibric peats in their normal state commonly have a total porosity of 90 percent by volume, whereas sapric materials commonly have less than 85 percent pores.