spreading plate
111Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
112Marine geology — Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches. Marine geology or geological oceanography involves geophysical, geochemical, sedimentological and paleontological… …
113Pangea — [pan jē′ə] 〚coined (1912) by A. L. Wegener (1880 1930), Ger geologist: < Gr pan, all + gē, the earth〛 the large landmass that nearly extended from pole to pole on one side of the earth during the late Paleozoic and early Mesozoic eras: it… …
114printmaking — /print may king/, n. the art or technique of making prints, esp. as practiced in engraving, etching, drypoint, woodcut or serigraphy. [1925 30; PRINT + MAKING] * * * Art form consisting of the production of images, usually on paper but… …
115rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …
116Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …
117List of cutaneous conditions — This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. See also: Cutaneous conditions, Category:Cutaneous conditions, and ICD 10… …
118Oryzomys couesi — Temporal range: Late Pleistocene to Recent Oryzomys couesi (above) and Tylomys panamensis (below).[1] …
119Pacific Ring of Fire — The Ring of Fire redirects here. For other uses of the term, see Ring of Fire (disambiguation). The Pacific Ring of Fire (see below) …
120Baseball field — The baseball diamond of the San Diego Padres PETCO Park, seen from the stands. A baseball field, also called a ball field or a baseball diamond, is the field upon which the game of baseball is played. The terms baseball field and ball field are… …
