Loose layer of tephra (volcanic fragments) ejected during an eruption, which have not been compacted or cemented together.

ज्वालामुखीय राख जो सघन या सीमेंटेड नहीं हुई है।

English Usage: The village was covered in unconsolidated volcanic ash after the eruption.

Hindi Usage: ज्वालामुखी विस्फोट के बाद गाँव अपरिसंहित ज्वालामुखीय राख से ढका हुआ था।