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"Gravity data have many scientific applications, both on the surface of the Earth and in space. The data are used for computing gravitational models, which aid those searching for oil, gas, and minerals. Alone or in combination with other data (such as satellite, astrogeodetic, or geophysical), gravity data are used to calculate deflection of the vertical components, geoidal heights, gravity disturbance components, and datum shifts for orienting local geodetic datums to an Earth-centered world geodetic system. The data are also used for calibrating inertial navigation and guidance systems"--Introduction.
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
The subjects of the papers that make up the volume vary from the preparation of national maps to examples of the many uses of regional maps. The anomalities that are discussed range in areal dimension from hundreds of kilometers to tons of meters. The majority of the papers illustrate the utility of the maps in mapping structures and lithologic variations wirhin the continenetal crust, the configuration of the crystalline basements rocks, zones of crustal weakness, distribution of extrusive and intrusive igneous rocks and the geometry of sedimentary basins. Most cases are drawn from the United States and Canada, but examples from Europe, Africa, South America and Asia are included.