Outflow from the Pu’u’ O’o vent, Hawai’i Volcanoes National Park. Photograph by David Martin, 29 January 2017. Used with permission.
Outflow from the Pu’u’ O’o vent, Hawai’i Volcanoes National Park
Outflow from the Pu’u’ O’o vent, Hawai’i Volcanoes National Park
Outflow from the Pu’u’ O’o vent, Hawai’i Volcanoes National Park
Smoky quartz with pink fluorite, Kristallkluft Gerstenegg alpine crystal cleft, Switzerland
Smoky Quartz with Pink Fluorite, Kristallkluft Gerstenegg, Switzerland
Landscape Arch, Arches National Park, Utah.
Landscape Arch, Arches National Park, Utah
Oberaargletscher "Upper Aare-Glacier" and reserve lake Oberaarsee with snow, in the Bernese Alps, Berne, Switzerland
Oberaargletscher and reserve lake Oberaarsee, Bernese Alps
Stongehenge, Sundown, Salisbury Plain, England, United Kingdom
Stongehenge, Sundown, Salisbury Plain, England, United Kingdom
Polished slab of fossil conifer wood from the middle Miocene of central Washington State
Polished slab of fossil conifer wood
Dramatic sunset from near Kemmerer, Wyoming.
Sunset, Kemmerer, Wyoming
Headframe at the now defunct Kelly Mine, Magdalena Mining District, New Mexico
Kelly Mine, Magdalena Mining District, New Mexico
Foliage of native columbine (Aquilegia formosa), Snohomish County, Washington
Native columbine (Aquilegia formosa), Washington
Flowers of the hedgehog cactus, Echinocereus coccineus. Near Mack, Mesa County, Colorado
Hedgehog cactus (Echinocereus coccineus), Mack, Colorado
Joshua trees (Yucca brevifolia) at Joshua Tree National Park, California
Joshua trees (Yucca brevifolia), Joshua Tree National Park, California
Painted Hills unit of the John Day Fossil Beds National Monument, Wheeler County, Oregon
Painted Hills, John Day Fossil Beds National Monument, Oregon
Gibbaeum sp. Little Karoo, Western Cape Province, South Africa
Gibbaeum sp. Little Karoo, Western Cape Province, South Africa
Transverse section of modern California incense cedar (Calocedrus decurrens) showing central pith and several growth rings
Rings of modern California incense cedar (Calocedrus decurrens)
Barred owl (Strix varia), Bainbridge Island, Washington
Barred owl (Strix varia), Bainbridge Island, Washington
Fossil maple samara (Acer osmonti). Early Oligocene Bridge Creek Formation, Fossil, Wheeler County, Oregon
Fossil maple samara (Acer osmonti), Early Oligocene, Oregon
Fossil six-pored alder pollen from the late Miocene Vasa Park flora, King County, Washington
Fossil six-pored alder pollen, late Miocene Vasa Park flora, Washington
Fossil holly (Ilex) pollen from the late Miocene Vasa park flora, King County, Washington
Fossil holly (Ilex) pollen, late Miocene Vasa park flora, Washington
Fossil pine pollen from the late Miocene Vasa Park flora, King County, Washington
Fossil pine pollen, late Miocene Vasa Park flora, Washington
Radial section of fossil Sequoia wood showing large taxodioid cross field pits. Middle Miocene, Washington
Radial section of fossil Sequoia wood, Middle Miocene, Washington

 

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