Dome na Tomichi

Tomichi Dome  ya tashi a arewacin babbar hanyar Amurka 50 a yammacin Hot Springs Creek da kudancin Waunita Hot Springs Reservoir a kudu maso gabashin Gunnison County, Colorado. Tana cikin gandun daji na Gunnison.

 Ilimin ƙasa 
Tomichi Dome sanannen dutse ne wanda aka kafa a lokacin Tertiary . Babban dutse shine rhyolite, amma an ambaci microgranite, breccia, da tuff a matsayin yanzu. Kewaye da dutsen, a kan kwarin, shine Mancos Shale, dutse mai laushi na Mesozoic.

An bayyana Tomchi Dome a matsayin intrusion kuma a matsayin extrusive, fasalin dutsen wuta. A matsayin intrusion, pluton na iya Magma lokacin da aka shiga cikin Mancos Shale wanda ya haifar da laccolith. Idan aka ba da ƙwayoyin ƙwayoyin dutsen, ana zaton laccolith ya kasance a zurfin zurfi kuma ya sanyaya da sauri. Wataƙila ana danganta iska da shiga da ke haifar da rhyolytic breccia da tuff da aka rubuta a kusa. Shallow rhyolitic plutons kudu maso yammacin Tomichi Dome, a cikin San Juan Mountains kusa da Lake City, an kuma bayyana su a matsayin laccoliths.

A madadin haka, an bayyana Tomichi Dome a matsayin fasalin fashewar dutse inda fashewar farko ta ajiye breccia da tuff wanda ya wuce   kauri. Gudun ko dome na topaz rhyolite ya rufe tuff.

Ko plutonic ko volcanic, Tomichi Dome mai yiwuwa yana ɗaya daga cikin jerin gine-ginen da ke da alaƙa da Rio Grande Rift, wanda ya shimfiɗa daga Mexico zuwa Colorado.

 Sunayen tarihi 

 Tomichi Dome - 1907 
 Tumitche Dome

 Manazarta