404. That’s an error.

The requested URL /bookmarks/mark?op=add&bkmk=https%3A//jgs.lyellcollection.org/content/179/2/jgs2021-044&title=Thermal%20metamorphism%20on%20the%20Moon%20as%20recorded%20by%20the%20granulite%20suite was not found on this server. That’s all we know.