Words to Describe ignimbrites

How ignimbrites often is described ("________ ignimbrites")

• upper
• enriched
• dense
• most
• many
• central
• welded
• late
• dacitic
• volume
• subaerial
• chilean
• voluminous
• american
• thick
• silicic
• rhyolitic
• older
• true
• group
• siliceous
• widespread
• large
• successive
• peraluminous
• rich
• major
• extensive