Diverse subsidence geometries and collapse processes for ash-flow calderas are inferred to
reflect varying sizes, roof geometries, and depths of the source magma chambers, in …

Abstract Recent inference that Mesozoic Cordilleran plutons grew incrementally during> 106
yr intervals, without the presence of voluminous eruptible magma at any stage, minimizes …

Abstract The northeastern San Juan Mountains, the least studied portion of this well-known
segment of the Southern Rocky Mountains Volcanic Field are the site of several newly …

Our field-based geochemical studies of the Triassic, Jurassic and Cretaceous granitoids on
Hainan Island indicate that their magmas had different geochemical affinities, changing from …

Pre-caldera and caldera-related igneous rocks near Questa, New Mexico, provide a well-
constrained example of upper-crustal extension over a magma chamber. Extensional strain …

Exceptional exposures of four, precisely dated, Middle Jurassic to Early Cretaceous, silicic
volcanic centers and their plutonic equivalents in Hong Kong have provided an excellent …

Collapse calderas are one of the most important volcanic structures because of their hazard
implications, but also because of their high energy potential and their association with …

The majority of Tertiary volcanic rocks of the western United States and Mexico are alkaline
in composition and may contain as much as 50 wt% equivalent K-feldspar. Emplacement of …

Abstract The San Juan Mountains in southwestern Colorado have long been known as a
site of exceptionally voluminous mid-Tertiary volcanism, including at least 22 major …

Abstract Jebale Barez Plutonic Complex Is composed of granitoid Intrusive Bodyes and Is
located In the East-North East Jiroft and southeastern province of Kerman on The lengths of …