geologic boundary

boundary between geologic units

en-GB/ˌd͡ʒɪəˈlɒd͡ʒɪk ˈbaʊndəɹɪ/
en-US/ˌd͡ʒiəˈlɑd͡ʒɪk ˈbaʊndəɹi/

カテゴリ：

geographical boundary