Sedimentary rock comprised mainly of sandstone with a significant amount of clay minerals.

ऐसी अवसादी चट्टानें जो मुख्यत

English Usage: The construction work was complicated by the presence of argillaceous sandstone, requiring specialized equipment.

Hindi Usage: निर्माण कार्य चिकनी मिट्टीयुक्त बलुआ पत्थर की उपस्थिति के कारण जटिल हो गया, विशेष उपकरणों की आवश्यकता पड़ी।