^pInstitute;
of;
Geology;
and;
Mineral;
Resources,;
Wuhan;
430223,;
China;
^pProcesses;
and;
Mineral;
Resources,;
State;
Key;
Laboratory;
of;
China;
University;
of;
Geosciences,;
Wuhan;
430074,;
China;
稀土元素; 宜昌地区; 牙形石; 奥陶系; 环境指标; LA-ICP-MS; 证据; 黄花;