Dutsen da ba a yi wasa ba (Colorado)

Dutsen Matchless babban taron koli ne a cikin tsaunukan Elk na Dutsen Rocky na Arewacin Amurka .  dutsen yana cikin Gunnison National Forest,  gabas-kudu maso gabas ( mai ɗauke da 98°) na Garin Crested Butte a Gunnison County, Colorado, Amurka .   

 Geology 
A lokacin Laramide Orogeny an ɗaga yankin kusa da Dutsen Matchless kuma an ɗaga duwatsun ginshiƙan Precambrian da saman dutsen Paleozoic da ke sama sama da kwaruruka na kusa. Wannan ɗagawa ya haifar da nakasar dutse musamman a yankin dutsen. Nadawa da kuskuren al'ada da yawa suna rikita yankin. Bayan wannan haɓakar kimanin shekaru miliyan 65 zuwa 75 da suka wuce, an daɗe ana zaɓe. Rushewar tuddai da tarin ɓangarorin da ke cikin kwaruruka sun daidaita yanayin ƙasa. Kimanin shekaru miliyan 30 da suka gabata, magma sun shiga cikin Precambrian da Paleozoic duwatsu wanda ya haifar da hannun jari , dikes, da sills . Sabunta ɗagawa kusan shekaru miliyan 10 da suka gabata ya ɗaga yankin zuwa matsayin da aka gani a yau. Sojojin da ke lalata ruwa da kankara tun daga lokacin sun zana shimfidar wuri tare da sassaka tsaunin Matchless na yanzu. Ƙunshi cikin waɗannan sojojin na ɓarna shine Pleistocene glaciation, kuma glacial adibas sun cika Dustin Gulch zuwa arewacin dutsen.   

A taron koli na Dutsen Matchless akwai ƙananan duwatsu masu laushi na Paleozoic, kuma ƙananan gangaren dutsen su ne mosaic na tsofaffin Proterozoic (Precambrian) granites da gneiss da ƙananan duwatsu na Pennsylvania na Belden da Minturn formations tare da tsakiyar Tertiary intrusive granitic duwatsu.  

 Tafiya 
Ana iya isa taron kolin cikin sauƙi daga yamma. Hanyar Wheelbarrow Gulch (Hanyar daji 746.1A) tana kaiwa zuwa gangaren yammacin Dutsen Matchless. Tafiya zuwa babban taron na iya farawa inda hanyar ta ƙare a tsayin (  . Babban taron shine , class-2 ya yi tafiya kudu maso gabas ta cikin dajin subalpine, makiyaya, da tundra mai tsayi . Ribar haɓaka shine (  ).  

 Manazarta