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Transmission electron microscope (TEM) micrograph showing dark melanin granules in a melanocyte (top center) and in several keratinocytes, which, unlike melanocytes, have bundles of keratin filaments

Newspaper rock is a protected wall with ancient Anasazi Indian petroglyphs

$Wet rough asphalt black bitumen road pavement surface abstract grunge texture close-up top view background banner.\nBitumen is a sticky, black, highly viscous liquid or semi-solid form of petroleum. In the U.S., it is commonly referred to as asphalt. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used.\nTarmacadam is a road surfacing material made by combining crushed stone, sand, and tar. It is a more durable and dust-free enhancement of simple compacted stone macadam surfaces. The terms \$

Aerial view of canyons in Monument Valley, Arizona, USA.

Layered maroon and light speckled rock magnified.

This is a photograph of natural mineral formations at a geothermal site..Morocco South Africa,Nikon D3x

Coloured transmission electron micrograph (TEM) of a small arteriole showing, from lumen: endothelium (magenta), discontinuous internal elastic lamina (blue), cross-sectioned smooth muscle fibers (cytoplasm, red, nucleus, light yellow) and connective tissue of adventitia (green).

Petrified wood, 20 million years old wood. Wood turned into stone

Unique underground geology of stalactites and stalagmites.

Bright paint on the metal from corrosion time

Palo Duro Canyon State Park, Texas, USA: eroded cliff side - Geologic time periods marked by major changes in the fossil record - rock strata covering the Permian age, Triassic age, Miocene-Pliocene age and at the top the Quaternary age - this cliff includes the Permian-Triassic (P-T) extinction boundary, colloquially known as the Great Dying, that took place about 248 million years ago. The extinction was caused by climate change. The main cause of extinction was the vast amount of carbon dioxide emitted by volcanic eruptions that created the Siberian Traps, which elevated global temperatures and acidified the oceans. Geological time scale, part of the Caprock Escarpment - Texas Panhandle.

Rural roads. Abstract background of liquefied earth surface.

colored texture layers of the earth, full frame

Paint Mines geological rock formations near in El Paso county, Calhan and Colorado Springs, Colorado, in western USA of North America. Named for the colorful clays that were collected by American Indians to make paint. Brightly colored bands, caused by oxidized iron compounds throughout the many different layers of clay.

Golden Zebra print pattern leather cut as background textured and wallpaper. Rustic style

Hair fibers from the calyptra of Orthotrichum moss, with polarization at 200x, from East Windsor, Connecticut.

Eroded sedimentary rocks of Cedar Breaks National Monument near Bryan Head Utah

Rainbow Mountain, Peru. Also known as Cerro Colorado near to Cusco. Aerial view. South America

citrine (orange or yellow quartz SiO2 as a semiprecious stone)

$False colour TEM micrograph. Olfactory nerve showing the ensheathing glia (nucleus, blue, cytoplasm green, basal lamina, pink) surrounding many non-myelinated axons (brown) of olfactory neurons.\$

Paint Mines geological rock formations near Calhan and Colorado Springs, Colorado, in western USA of North America.

Gloss mountains national park or glass mountains, Oklahoma

The Painted Hills are one of the three units that comprise the John Day Fossil Beds. Take time to also visit the Clarno Unit, with Mars-like pillars formed by waterfalls and volcanic sludge, and the Sheep Rock Unit, where fossils of plants and animals like saber-toothed cats are on display at the Thomas Condon Paleontology Center. The hills get their name from the delicately colored stratifications in the soil and the yellows, golds, blacks and reds of the Painted Hills are best seen in the late afternoon. Tones and hue may appear to change from one visit to another, as the claystone differ with ever-changing light and moisture levels. Once you see them for yourself, it’s pretty easy to understand why the Painted Hills are one of the 7 Wonders of Oregon.

Rock formation and sea water at a rocky beach in Norwegian fjord in summer (July). Shot with a full frame camera with a fast lens at low ISO resulting in a large clean file. Shallow depth-of-field.

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Sandstone Layers in Antelope Slot Canyon Arizona USA.jpg

Checkerboad mesa Zion sandstone strata.jpg

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sandstone-landscape-in-Red-Rock-Canyon-National-Conservation-Area.jpg