Rocks As Geological Things Found In Nature
Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids. For example, granite, a common rock, is a combination of the minerals quartz, feldspar and biotite. The Earth's outer solid layer, the lithosphere, is made of rock. Rock has been used by humankind throughout history. The minerals and metals in rocks have been essential to human civilization. [from wikipedia]
Balanced Rocks Concrete River Glow In The Dark Rocks Boulder Beach Rocks Submerged Lone Dirt Rocks
Glow In The Dark Rocks, As Found Things, Eugene, Oregon

The glow in the dark stones are made of natural resin,the glow stones are artificial rocks, non-toxic, non- radioactive and odorless. Glow in the dark rocks do no harm to people and can be very safe for children to play. And glow pebbles are harmless to fish.[from amazon]

Submerged, Rocks As Geological Things

Rocks found under water, whether intentionally sunk or naturally sunk.

Lone, Rocks As Geological Things

A single rock with a background that is neither stone nor dirt.

River, Rocks As Geological Things

Rocks found in river beds and along the shore of rivers and creaks.

Dirt Rocks, As Geological Things

Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. The Earth's body of soil is the pedosphere, which has four important functions: it is a medium for plant growth; it is a means of water storage, supply and purification; it is a modifier of Earth's atmosphere; it is a habitat for organisms; all of which, in turn, modify the soil.[from wikipedia]

Beach Rocks, As Geological Things, Found In Nature

Beachrock is a friable to well-cemented sedimentary rock that consists of a variable mixture of gravel-, sand-, and silt-sized sediment that is cemented with carbonate minerals and has formed along a shoreline. Depending on location, the sediment that is cemented to form beachrock can consist of a variable mixture of shells, coral fragments, rock fragments of different types, and other materials. It can contain scattered artifacts, pieces of wood, and coconuts. Beachrock typically forms within the intertidal zone within tropical or semitropical regions.[from wikipedia]

Boulder, As A Form Of Rock, As A Found Thing, Between East 6th Avenue and Union Pacific Tracks, Eugene, Oregon

While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move.[from wikipedia]

Balanced Rocks, As Geological Things, Found In Nature

A balancing rock, also called balanced rock or precarious boulder, is a naturally occurring geological formation featuring a large rock or boulder, sometimes of substantial size, resting on other rocks, bedrock, or on glacial till. Some formations known by this name only appear to be balancing, but are in fact firmly connected to a base rock by a pedestal or stem.[from wikipedia]

Concrete, As Man Made Rocks

Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement that hardens over time. Most concretes used are lime-based concretes such as Portland cement concrete or concretes made with other hydraulic cements, such as ciment fondu. However, asphalt concrete, which is frequently used for road surfaces, is also a type of concrete, where the cement material is bitumen, and polymer concretes are sometimes used where the cementing material is a polymer.[from wikipedia]

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