Moeraki Boulders
Huge spherical concretion found in strata of 50 million years ago. Weight is 3.5 ton. It includes a fossil of whale’s head.
KEYWORDS: Spherical concretion / Calcite / Sealing / Applied geoscience
Department of Earth and Planetary Sciences
Reference
https://www.sci.nagoya-u.ac.jp/images/kouhou/30.pdf
(Japanese only)