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<br />r- <br />Cft <br /> <br />-- -_____ --. .4............. ............... .......... ......"....L........... <br />I~adville l~nestonc crops out but other formations arc also involved. <br />It is also of significance that the Paradox formation is found in the <br />general vicinlty of both spring areas. Chemical analyses of tt:>e water <br />from the sprinGs show large amounts of both sodium chloride ana calcium <br />sulfate Gnd the Paradox contains beds of these minerals in the form of <br />halite and gypsum. <br /> <br />'. <br /> <br /> <br />: . :~~ "., <br /> <br />....:. ~.. <br />, .' <br /> <br />." ~..: '.~ <br /> <br />,,':'f::(~:'; <br /> <br />~: . <br /> <br />. I". <br /> <br />:'-10'-' <br />..;" <br /> <br />PI244-427-3 NA Colorado River Water Quality Improvement Program-Colorado <br />Hot mineral springs in the Dotsero area: This view is in the bubble up <br />area and part of sampling station dot 10. <br />USBR Photo by V. Jetley February 22, 1973 <br /> <br />'.1 <br /> <br />: ::~..}:. <br /> <br />Evidenc~ of volcanism as recent as Pleistocene in age occurs in the <br />area and suggests the possibility that hot intrusive bodies may be <br />present in the subsurface. A cinder cone and lava flow are found about <br />five miles east of the Dotsero Springs and other similar evidence exists. .' <br /> <br />~'..~.-' ';'.-.' <br />':~-';'~.~.'~: <br /> <br />I <br /> <br />In summary. only very generalized geolo~ie data is available on the <br />Glenwood and DO~Gero Springs and an extensive exploration progr~ ~~uld <br />be necessary to delineate the geology ,and hydrology. It is possible <br />