Rocks and Lava

雪儿 · 发表于: 2011-7-13 12:17:00

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Lichen on Slate

Photograph by Sylvia Sharnoff

Slate yields to brilliant lichens in Merced Falls, California.

雪儿 · 发表于: 2011-7-13 12:18:00

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Ertale Lava Lake

Photograph by Carsten Peter

Lava bubbles and oozes inside a lava lake in Ethiopia’s Ertale volcano. Molten surface temperatures range from 550 degrees Fahrenheit (288 degrees Celsius) to nearly 1000 degrees Fahrenheit (540 degrees Celsius) at the center of the pit.

雪儿 · 发表于: 2011-7-13 12:18:18

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Coyote Buttes Sandstone

Photograph by Frans Lanting

Striated sandstone lines the slopes of Coyote Buttes in Vermillion Cliffs National Monument, Arizona.

雪儿 · 发表于: 2011-7-13 12:18:39

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Crystal Patterns

Photograph by David Boyer

Concentric rings of color decorate a crystal found in Albany, Oregon.

雪儿 · 发表于: 2011-7-13 12:19:28

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Erupting Cone

Photograph by Carsten Peter

Lava spews from a newly formed cone on Italy’s Mount Etna during a 2002 eruption. The ancient name Etna may mean "burning"—it's easy to see why the mountain earned that name.

雪儿 · 发表于: 2011-7-13 12:19:57

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Rope Lava, Hawaii

Photograph by Frans Lanting

Pahoehoe lava darkens into ropy strands in Hawaii Volcanoes National Park.

雪儿 · 发表于: 2011-7-13 12:21:03

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Rock Swirls

Photograph by Cary Wolinsky

Lines reverberate in ever widening swirls from a rock in Moab, Utah.

雪儿 · 发表于: 2011-7-13 12:22:13

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Painted Hills

Photograph by Sylvia Sharnoff

Minerals streak the hills of Oregon's Painted Hills State Park.

雪儿 · 发表于: 2011-7-13 12:23:55

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Coyote Buttes, Arizona

Photograph by Frans Lanting

Patterned sandstone creates an optical illusion in the Wave rock formation, part of Coyote Buttes in Vermillion Cliffs National Monument, Arizona.

雪儿 · 发表于: 2011-7-13 12:24:16

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Spreading Pahoehoe Lava

Photograph by Marc Moritsch

Pahoehoe lava, the hottest Hawaiian lava type, may darken into ropy strands or wrinkle into silver-sheened taffy, such as this flow in Hawai'i Volcanoes National Park.

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