Search
Search results
Displaying 201 - 210
stratification
(Encyclopedia) stratification (Lat.,=made in layers), layered structure formed by the deposition of sedimentary rocks. Changes between strata are interpreted as the result of fluctuations in the…Point Reyes National Seashore
(Encyclopedia) Point Reyes National SeashorePoint Reyes National Seashorerāˈĭs [key], 71,068 acres (28,772 hectares), W Calif.; est. 1962. Included in the area are steep bluffs overlooking the…porgy
(Encyclopedia) porgyporgypôrˈgē [key], common name for members of the Sparidae, a family of small-mouthed fishes with strong teeth adapted for crushing their food of shellfish and crustaceans.…pika
(Encyclopedia) pikapikapīˈkə [key], short-haired mammal related to rabbits and hares, also called mouse hare and rock rabbit. Pikas live above the timber line in the mountains of N Asia and W North…slate
(Encyclopedia) slate, fine-grained rock formed when sedimentary rocks such as shale are metamorphosed by great pressure. Slate splits into perfectly cleaved, broad thin layers; this…sand
(Encyclopedia) sand, rock material occurring in the form of loose, rounded or angular grains, varying in size from .06 mm to 2 mm in diameter, the particles being smaller than those of gravel and…Mohole, Project
(Encyclopedia) Mohole, Project, program proposed in 1957 to drill a hole down to the boundary between the crust and the mantle, known as the Mohorovičić discontinuity at about 4 to 43 mi (7 to 70 km…buoy
(Encyclopedia) buoybuoyboi, b&oomacr;ˈē [key], float anchored in navigable waters to mark channels and indicate dangers to navigation (isolated rocks, mine fields, cables, and the like). The…San Juan Islands
(Encyclopedia) San Juan IslandsSan Juan Islandssăn wän [key], archipelago of 172 islands constituting San Juan co., NW Wash., E of Vancouver Island. The islands were visited and named c.1790 by…batholith
(Encyclopedia) batholith, enormous mass of intrusive igneous rock, that is, rock made of once-molten material that has solidified below the earth's surface (see rock). Batholiths usually are granitic…Trending
Here are the facts and trivia that people are buzzing about.
