Salma caldera

{{short description|Late Proterozoic caldera complex in Saudi Arabia}}

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The Salma caldera is a late Proterozoic caldera complex in the northeastern Arabian Shield of Saudi Arabia. It encompasses rhyolitic volcanic rocks, a peralkaline ring intrusion that rose along a fracture formed during caldera collapse, and a younger resurgent metaluminous and peraluminous granite core.{{cite web|url=https://pubs.usgs.gov/of/1985/0370/report.pdf|title=The Salma Caldera complex, northeastern Arabian Shield, Kingdom of Saudi Arabia|access-date=2022-06-28}}