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septarian nodule

Overview page. Subjects: Earth Sciences and Geography.

A concretion, roughly spheroidal in shape, usually of clay ironstone, and characterized by an internal structure of angular blocks separated by radiating mineral-filled blocks. The mineral...

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septarian nodule

Overview page. Subjects: Earth Sciences and Geography.

A concretion, roughly spheroidal in shape, usually of clay ironstone, and characterized by an internal structure of angular blocks separated by radiating mineral-filled blocks. The mineral...

See overview in Oxford Index

septarian nodule

Edited by MICHAEL ALLABY.

in A Dictionary of Earth Sciences

January 2008; p ublished online January 2008 .

Reference Entry. Subjects: Earth Sciences and Geography. 84 words.

A concretion, roughly spheroidal in shape, usually of clay ironstone, and characterized by an internal structure of angular

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septarian nodule

Michael Allaby.

in A Dictionary of Geology and Earth Sciences

January 2013; p ublished online September 2013 .

Reference Entry. Subjects: Earth Sciences and Geography. 90 words.

A *concretion, roughly spheroidal in shape, usually of *clay *ironstone, and characterized by an internal structure of angular blocks separated by radiating mineral-filled blocks. The...

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