Glacial Quaternary Geology

SURFICIAL_GEOL_MM49_IN is a polygon shapefile that shows surficial geology in Indiana at a scale of 1:500,000. The mapped units include textural assemblages of quaternary sediments and bedrock lithologies.SURFICIAL_GEOL_MM49_IN 是一份用于展示印第安纳州地表地质（surficial geology）的多边形形状文件（Shapefile），制图比例尺为1:500000。其填图单元涵盖第四纪沉积物（quaternary sediments）的结构组合与基岩岩性（bedrock lithologies）。