septarian การใช้

Nodular lumps of pyrite and crystals of septarian concretions are also common.
The process that created the septaria, which characterize septarian concretions, remains a mystery.
Smaller but otherwise very similar septarian concretions are found within exposures of sedimentary rocks elsewhere in New Zealand.
Similar septarian concretions have been found in the Kimmeridge Clay and Oxford Clay of England, and at many other locations worldwide.
The process or processes that created septaria within Moeraki Boulders, and in other septarian concretions, remain an unresolved matter for which a number of possible explanations have been proposed.