The Giant Crater Lava Field: Geology and geochemistry of a compositionally zoned, high-alumina basalt to basaltic andesite eruption at Medicine Lake Volcano, California

1991 ◽  
Vol 96 (B13) ◽  
pp. 21843-21863 ◽  
Author(s):  
Julie M. Donnelly-Nolan ◽  
Duane E. Champion ◽  
Timothy L. Grove ◽  
Michael B. Baker ◽  
Joseph E. Taggart ◽  
...  
Keyword(s):  
Basaltic Andesite ◽  
High Alumina ◽  
Lava Field ◽  
High Alumina Basalt ◽  
Field Geology ◽  
Medicine Lake ◽  
Medicine Lake Volcano

Origin of compositional zonation (high-alumina basalt to basaltic andesite) in the Giant Crater Lava Field, Medicine Lake Volcano, northern California

1991 ◽  
Vol 96 (B13) ◽  
pp. 21819-21842 ◽  
Author(s):  
M. B. Baker ◽  
T. L. Grove ◽  
R. J. Kinzler ◽  
J. M. Donnelly-Nolan ◽  
G. A. Wandless
Keyword(s):  
Basaltic Andesite ◽  
High Alumina ◽  
Northern California ◽  
Lava Field ◽  
High Alumina Basalt ◽  
Compositional Zonation ◽  
Medicine Lake ◽  
Medicine Lake Volcano

High pressure phase relations of primitive high-alumina basalts from Medicine Lake volcano, northern California

1991 ◽  
Vol 108 (3) ◽  
pp. 253-270 ◽  
Author(s):  
Karen S. Bartels ◽  
Rosamond J. Kinzler ◽  
Timothy L. Grove
Keyword(s):  
High Pressure ◽  
Phase Relations ◽  
High Pressure Phase ◽  
High Alumina ◽  
Northern California ◽  
Pressure Phase ◽  
Medicine Lake ◽  
Medicine Lake Volcano

High-pressure experimental studies on the origin of anorthosite

1969 ◽  
Vol 6 (3) ◽  
pp. 427-440 ◽  
Author(s):  
Trevor H. Green
Keyword(s):  
High Pressure ◽  
Partial Melting ◽  
Lower Crust ◽  
Experimental Studies ◽  
Quartz Diorite ◽  
Main Phase ◽  
Large Field ◽  
High Alumina ◽  
High Alumina Basalt ◽  
Rock Types

Experimental crystallization of anhydrous synthetic quartz diorite (≈andesite), gabbroic anorthosite, and high-alumina basalt has been conducted in their respective partial melting fields at high pressure. The quartz diorite composition shows a large field of crystallization of plagioclase from 0–13.5 kb, together with subordinate amounts of orthopyroxene and clinopyroxene and minor opaque minerals. In the gabbroic anorthosite, plagioclase is the main phase crystallizing from 0–22.5 kb, but at higher pressure it is replaced by aluminous clinopyroxene. Aluminous clinopyroxene is the main phase crystallizing from the high-alumina basalt from 9–18 kb and is joined by plagioclase at lower temperatures. At higher pressure it is joined by garnet. The albite content of the liquidus and near-liquidus plagioclase increases markedly with increasing pressure in each of the three compositions.The results for the high-alumina basalt and gabbroic anorthosite compositions preclude any major trends towards alumina enrichment and derivation of anorthositic plutons at crustal or upper mantle depths under anhydrous conditions. However, the results for the quartz diorite suggest that anorthositic complexes may form as a crystalline residuum from the partial melting of a lower crust of overall andesitic composition or from fractional crystallization of an andesitic magma. In either case a large separation of plagioclase crystals occurs (andesine – acid labradorite composition at lower crustal pressures), together with subordinate pyroxenes and ore minerals. Under appropriate temperature conditions separation of crystals and liquid by a filter-pressing mechanism during deformation may result in the genesis of igneous complexes containing rock types ranging in composition from gabbro through gabbroic anorthosite to anorthosite, together with associated acid rocks. The acid rocks need not necessarily remain spatially associated with the refractory gabbroic anorthosite and anorthosite. Where these processes have operated in the crust, anorthositic rocks may be left as the main component of the lower crust, while the low melting acidic fraction has intruded to higher levels.

scholarly journals Investigating long-term subsidence at Medicine Lake Volcano, CA, using multitemporal InSAR

2014 ◽  
Vol 199 (2) ◽  
pp. 844-859 ◽  
Author(s):  
Amy L. Parker ◽  
Juliet Biggs ◽  
Zhong Lu
Keyword(s):  
Medicine Lake ◽  
Medicine Lake Volcano

scholarly journals "Very High Alumina Basalt": A Mixture and Not a Magma Type

Science ◽  
1974 ◽  
Vol 183 (4130) ◽  
pp. 1214-1215 ◽  
Author(s):  
E. Dowty ◽  
M. Prinz ◽  
K. Keil
Keyword(s):  
High Alumina ◽  
High Alumina Basalt ◽  
Magma Type ◽  
Very High

A magmatic model of Medicine Lake Volcano, California

1988 ◽  
Vol 93 (B5) ◽  
pp. 4412-4420 ◽  
Author(s):  
Julie M. Donnelly-Nolan
Keyword(s):  
Medicine Lake ◽  
Medicine Lake Volcano
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