12:30 PM - 12:33 PM
[BPT27-P01] Spongy parenchyma found in meta-tuff of Hitachi Cambrian Akazawa Formation
3-min talk in an oral session
Keywords:Hitachi Cambrian, meta-tuff, spongy parenchyma, sphere
Hitachi Cambrian meta-tuffs containing spongy parenchyma occur as gravels in the Miyata River and the Ayukawa River. Spongy parenchyma consists of siliceous sphere with several layers and dark matrix. This texture is not like to siliceous oolite, pisolite, and spherulite, but to silicified sponge.