Tracing Variation in Diagenesis in Concretions: Implications from a Raman Spectroscopic Study

• Published in: Minerals (Basel) Vol. 15; no. 5; p. 502
• Main Authors: Han, Yaxuan, Shimooka, Kazuya, Yeh, Meng-Wan, Tsuboi, Motohiro
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 08.05.2025
• Subjects: Carbon; Comparative analysis; Concretions; Diagenesis; Fossils; Graphitization; Kerogen; Organic matter; Permeability; Porosity; Preservation; Quartz; Raman spectroscopy; Sedimentary structures; Sediments; Shale oils; Spectrum analysis; Upper mantle; Japan; Taiwan

Concretions represent an exceptional mode of fossil preservation. This is attributed to their mineralized outer mantle, which exhibits low permeability and porosity, thereby limiting diagenetic alteration. The present research employs microscopic Raman spectroscopy to assess the thermal maturity of...