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Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 9
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 5
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Bishop Tuff over Sherwin Till with clastic dikes (Pleistocene; Sherwin Summit, Owens Valley, California, USA) 5
Bishop Tuff over Sherwin Till with clastic dikes (Pleistocene; Sherwin Summit, Owens Valley, California, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot Creek (Long Valley Caldera, California, USA) 10
Hot Creek (Long Valley Caldera, California, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs & Hot Creek (Long Valley Caldera, California, USA) 12
Hot springs & Hot Creek (Long Valley Caldera, California, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 33
Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 33
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot springs & Hot Creek (Long Valley Caldera, California, USA) 6
Hot springs & Hot Creek (Long Valley Caldera, California, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic ash & pumice (Holocene, ~7550-7760 a; Route 138 roadcut southeast of Clearwater, Oregon, USA) 9
Volcanic ash & pumice (Holocene, ~7550-7760 a; Route 138 roadcut southeast of Clearwater, Oregon, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 29
Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 29
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 18
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 18
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 13
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 30
Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 30
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot Creek (Long Valley Caldera, California, USA) 13
Hot Creek (Long Valley Caldera, California, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 31
Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 31
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 30
Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 30
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 29
Hot Creek Rhyolite Flow (Pleistocene, 288 or 333 ka; Hot Creek Gorge, Long Valley Caldera, California, USA) 29
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 12
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 11
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic breccia (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 7
Volcanic breccia (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 9
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 3
Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 2
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 25
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 25
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 17
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 17
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot springs & Hot Creek (Long Valley Caldera, California, USA) 11
Hot springs & Hot Creek (Long Valley Caldera, California, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1

Pumice Desert (north of Crater Lake Caldera, Oregon, USA) 5
Pumice Desert (north of Crater Lake Caldera, Oregon, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot spring & Hot Creek (Long Valley Caldera, California, USA) 13
Hot spring & Hot Creek (Long Valley Caldera, California, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 11
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic breccia (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 2
Volcanic breccia (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 13
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1


Petrified wood
Petrified wood
by wallygrom

クリエイティブ・コモンズ 表示-継承 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 22
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 22
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 19
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 19
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic breccia (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 1
Volcanic breccia (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 24
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 24
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs & Hot Creek (Long Valley Caldera, California, USA) 7
Hot springs & Hot Creek (Long Valley Caldera, California, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 15
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 15
by James St. John

クリエイティブ・コモンズ 表示 2.1

Slot Canyon at Tent Rocks
Slot Canyon at Tent Rocks
by joebackward

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 23
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 23
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 7
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 8
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

Petrified Forest
Petrified Forest
by wallygrom

クリエイティブ・コモンズ 表示-継承 2.1


Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 19
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 19
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 20
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 20
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 28
Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 28
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 18
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 18
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 8
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 21
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 21
by James St. John

クリエイティブ・コモンズ 表示 2.1


Bishop Tuff over Sherwin Till with clastic dikes (Pleistocene; Sherwin Summit, Owens Valley, California, USA) 10
Bishop Tuff over Sherwin Till with clastic dikes (Pleistocene; Sherwin Summit, Owens Valley, California, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 10
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 1
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 26
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 26
by James St. John

クリエイティブ・コモンズ 表示 2.1

Petrified wood
Petrified wood
by wallygrom

クリエイティブ・コモンズ 表示-継承 2.1

Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 22
Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 22
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 5
Hot spring (Hot Creek Gorge, Long Valley Caldera, California, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 10
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot spring & Hot Creek (Long Valley Caldera, California, USA) 3
Hot spring & Hot Creek (Long Valley Caldera, California, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 14
Volcanic tuff (Sonoma Volcanics, Upper Pliocene, 3.2-3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 14
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 21
Hot springs (Hot Creek Gorge, Long Valley Caldera, California, USA) 21
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sign at Kasha-Katuwe Tent Rocks National Monument
Sign at Kasha-Katuwe Tent Rocks National Monument
by Tatiana12

クリエイティブ・コモンズ 表示 2.1



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