siltstone造句
Thesedimentaryrocksaregraywacke,siltstone,tuffandpellitie,etc.StudyontheweatheringcharacteristicsofCretaceousargillaceoussiltstoneItsmainrocksisthemetamorphicpeliticsiltstone,thefeldspathicquartzwacke...
Thesedimentaryrocksaregraywacke,siltstone,tuffandpellitie,etc.StudyontheweatheringcharacteristicsofCretaceousargillaceoussiltstoneItsmainrocksisthemetamorphicpeliticsiltstone,thefeldspathicquartzwacke...