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California Mine, Glacier Mountain, Montezuma Mining District (Snake River Mining District), Summit County, Colorado, USA

California Mine, Glacier Mountain, Montezuma Mining District (Snake River Mining District), Summit County, Colorado, USA : Ref.: Dana 6:A2:83; Amer. Jour. Sci.:25:507 (1908).

The California, Sunburst, Meteor, and Wing claims, on Glacier Mountain, are on the lode commonly known as the Bell vein.[[1]] ....

Colorado , United-states , Us-geological-survey-professional-paper , Professional-paper , Survey-professional-paper ,

Jerry Tunnel, Glacier Mountain, Montezuma Mining District (Snake River Mining District), Summit County, Colorado, USA

Jerry Tunnel, Glacier Mountain, Montezuma Mining District (Snake River Mining District), Summit County, Colorado, USA : ....

Colorado , United-states , Us-geological-survey-professional-paper , Professional-paper , Survey-professional-paper ,

Palmer Ranch, Blue River area, Summit County, Colorado, USA

Palmer Ranch, Blue River area, Summit County, Colorado, USA : 20 miles NW of Dillon ....

Us-geological-survey-professional-paper , Detailed-mineral-list , Survey-professional-paper ,

Coal Creek Mines (Adamic; Forrest Association; Golden Eagle Bench Association; Gold Placers; Inc.; Malstrom Association; Slaven Association; McDonald), Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USA

Coal Creek Mines (Adamic; Forrest Association; Golden Eagle Bench Association; Gold Placers; Inc.; Malstrom Association; Slaven Association; McDonald), Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USA : Coal Creek Hydraulic Mining Association; Emily Association.

[Note: originally added coordinates were clearly wrong, therefore deleted.]

The head of Coal Creek crosses metamorphic rocks and . ....

Anchorage , Alaska , United-states , Charley-river , Yukon-river , Helmuth-jr , Alaska-division-of-geological , Us-geological-survey-professional-paper , National-park-service , Charley-rivers-national , Us-geological-survey

Frontiers | Sequence of Volcanic Activity of Sakurajima Volcano, Japan, as Revealed by Non-Eruptive Deflation

Since 1955, the Sakurajima volcano has experienced repeated Vulcanian eruptions accompanied by intense air-shocks, large ash clouds, and deflation ground deformations. However, ground deflations sometimes occurred even if no eruption took place. In this study, we categorize deflation events contained in continuous deformation records covering eruptive activities at the Sakurajima volcano Minamidake crater during the period from November 2017 to December 2020. The deflation events are classified into eruptive deflation and non-eruptive deflation (NED) types by examining the seismic data, infrasound generations, and visual phenomena. Their event type occurrence characteristics are then further clarified based on their relationships to pressure source volume changes. Comparing the pressure source volume changes with the monthly mass of volcanic ash expelled from the crater, which is estimated from deposition data around the volcano, we found the contribution of NED events to volcanic ash ....

Tungurahua , Ecuador-general- , Ecuador , Japan , Tokyo , Alaska , United-states , Augustine-volcano , Indonesia , Kyoto , Russia , Mexico