A type of metamorphic rock characterized by its banded appearance, formed from the alteration of sedimentary or igneous rocks.

पट्टीदार ग्नाइस

English Usage: The geologist examined the banded gneiss to understand its formation history.

Hindi Usage: भूविज्ञानियों ने पट्टीदार ग्नाइस का अध्ययन किया ताकि इसके निर्माण का इतिहास समझ सकें।