New screening method for well-preserved brachiopod shells and shell portions for paleoenvironmental analysis: Raman spectroscopy
K Oikawa·Yasufumi Iryu·Hiroshi Fujioka·Mamoru Takizawa·Miki Arakane·Yui Kouketsu·Thasinee Charoentitirat·Hidetoshi Hara·Koshi Yamamoto·Osamu Abe·Ryuji Asami·K. Yamagishi·H. Oda·Hideko Takayanagi
Abstract Brachiopod shells have been widely used as paleoenvironmental recorders because of their robust preservation in fossil records. However, accurately reconstructing past seawater temperatures from their oxygen (δ 18 O) and clumped isotope compositions requires identifying shells/shell portions that are minimally affected by kinetic isotope effects (KIE) and diagenetic alteration. This study investigated the potential of Raman spectroscopy as a rapid and non-destructive screening method fo