geological matrix

(geology) The fine-grained background material in which crystals, pebbles or fossils are embedded in a sedimentary rock

Japanese Meaning

堆積岩中に存在し、結晶、礫、化石などが埋め込まれている細粒の背景材

The fossil's delicate features were preserved in the geological matrix, which protected it during millions of years of burial.

その化石の繊細な特徴は、堆積岩の中で結晶や小礫、化石が埋め込まれている細粒基質に保存され、何百万年もの埋没期間中に保護されていた。

Sense（1）

(geology) The fine-grained background material in which crystals, pebbles or fossils are embedded in a sedimentary rock

geological matrixes

（ plural ）

geological matrices

（ plural ）