Temporal trends of oxygen isotopic depletion and recovery in rhyolite samples are linked to the formation of these features. The most recent of a certain group of these features was the light-magma Kilgore Tuff. The appearance of light magmas indicates that the uppermost portion of the continental crust has been consumed to the east of the Heise volcanic field, exhausting the melting potential of the crust above the mantle plume and suggesting that a fourth and final one of these features, analogous to the aforementioned Kilgore Tuff, will soon form at the Yellowstone Hotspot. Ring faults presage these features, which are sometimes formed by continuous erosion of an existing crater, but canonically they form from the catastrophic collapse of a suddenly-emptied magma chamber. For 10 points,
Temporal trends of oxygen isotopic depletion and recovery in rhyolite samples are linked to the formation of these features. The most recent of a certain group of these features was the light-magma Kilgore Tuff. The appearance of light magmas indicates that the uppermost portion of the continental crust has been consumed to the east of the Heise volcanic field, exhausting the melting potential of the crust above the mantle plume and suggesting that a fourth and final one of these features, analogous to the aforementioned Kilgore Tuff, will soon form at the Yellowstone Hotspot. Ring faults presage these features, which are sometimes formed by continuous erosion of an existing crater, but canonically they form from the catastrophic collapse of a suddenly-emptied magma chamber. For 10 points, name these round volcanic remnants, examples of which include Lake Pinatubo.
Temporal trends of oxygen isotopic depletion and recovery in rhyolite samples are linked to the formation of these features.
calderas