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In geology, a boulder (or rarely bowlder) [1] is a rock fragment with size greater than 25.6 cm (10.1 in) in diameter. [2] Smaller pieces are called cobbles and pebbles . While a boulder may be small enough to move or roll manually, others are extremely massive. [ 3 ]
Boulder is the home rule city that is the seat of Boulder County, ... 2013, over 400 riders attended the Thursday-night Cruiser Ride in honor of "Big Boy", ...
Large boulder lBo >630 >24.8031 Boulder Bo 200–630 7.8740–24.803 Cobble Co 63–200 2.4803–7.8740 Coarse soil Gravel Coarse gravel cGr 20–63 0.78740–2.4803
Multiple erratics on the terminal moraine of the Okanogan Lobe. The Cascade Mountains are in the background.. The term "erratic" is commonly used to refer to erratic blocks, which geologist Archibald Geikie describes as: "large masses of rock, often as big as a house, that have been transported by glacier ice, and have been lodged in a prominent position in the glacier valleys or have been ...
Boulder County is a county located in the U.S. state of Colorado of the United States. As of the 2020 census , the population was 330,758. [ 1 ] The most populous municipality in the county and the county seat is Boulder . [ 2 ]
Boulder cops are working 100 new tips in JonBenét Ramsey case — as family prepares to meet with chief in January ... “This is a big public black stain on the Boulder Police Department,” the ...
The residence at 749 15th St., where JonBenét Ramsey was murdered in December 1996, is pictured on Wednesday, Dec. 4, 2024 in Boulder, Colorado.
A cobble (sometimes a cobblestone) is a clast of rock defined on the Udden–Wentworth scale as having a particle size of 64–256 millimeters (2.5–10.1 in), larger than a pebble and smaller than a boulder. Other scales define a cobble's size differently. A rock made predominantly of cobbles is termed a conglomerate.