Introduces a series of related articles on the study of ocean/continent boundaries (margins) within the framework of plate tectonics. Topics discussed include: early attempts to interpret ocean/continent boundaries, Atlantic-type margins, Pacific-type margins, the edges of ancient oceans, and future challenges in the study of continental margins.…

The development of the South Atlantic continental margins through geological time is discussed in a series of three time slices, all of which depict various characteristics in the initial formation of this margin during the Cretaceous period (180 to 65 million years ago) of the Mesozoic era. (BT)

Discusses the challenges confronting plate tectonics. Presents evidence that contradicts continental drift, seafloor spreading, and subduction. Reviews problems posed by vertical tectonic movements. (Contains 242 references.) (DDR)

Appalachia's New River was labeled "the second oldest river in the world" during the 1970s as part of a campaign to save the river from being dammed. Despite the absence of geomorphic evidence, the promotion of the superlative age of the river was so successful that they mythical label became reality in the minds of the region's…

Recent research studies of both classifications of ocean margins (active or of Pacific type and passive or of Atlantic variety) have yielded a considerable amount of new information leading to some new theories. These theories regarding different kinds of tectonic activity are discussed. (BT)

Included is a two part glossary of bathymetric feature terms in twenty-seven languages, including English, compiled to aid users of bathymetric charts in other languages. Thirty-eight bathymetric features recognized by the United States Board on Geographic Names, Advisory Committee on Undersea Features are listed. (Author/JM)

Discussed is the earth's gravity and its geological significance. Variations of gravity around the earth can be produced by a great variety of possible distributions of density within the earth. Topics discussed include isostasy, local structures, geological exploration, change of gravity in time, and gravity on the moon and planets. (DS)

Examines the hydrologic cycle, the overall flow of water in the geosystem. Reviews the basic phase relationships among water, ice, and water vapor which are integrat parts of the hydrologic cycle. (JR)

Describes historically the acceptance of the theory of Continental drift and plate tectonics. (SL)

Presents a method for teaching about climate in introductory physical geography and earth science classes. A classification scheme consists of four basic types: instability, inversion, subsidence, and frontal; four seasonal hybrids based on combinations of the basic types; and three topographic variants: highlands, rainshadows, and coasts. (KC)

This book describes the Skylab 4 Earth Explorations Project. Photographs of the earth taken by the Skylab astronauts are reproduced here and accompanied by an analytical and explanatory text. Some of the geological and geographical topics covered are: (1) global tectonics - some geological analyses of observations and photographs from Skylab; (2)…

Geophysical activity increased in 1978, especially seismic gas and oil exploration in the United States and its waters. (BB)

Described is physical oceanography as analyzed by seven dependent variables, (three components of velocity, the pressure, density, temperature and salinity) as a function of three space variables and time. Topics discussed include the heat balance of the earth, current patterns in the ocean, heat transport, the air-sea interaction, and prospects…

Asserts that the theme of movement in physical geography is important but difficult to convey to students. Contends that repeat photography, portraying movement of physical features on the landscape through the seasons of a year, is a valuable instructional method. (CFR)

GRADES OR AGES: Inservice course for secondary teachers. SUBJECT MATTER: Earth science. ORGANIZATION AND PHYSICAL APPEARANCE: The guide is intended for use with a 32-program television course for teachers, with material intended to be used in the classroom. The introductory material explains the rationale of the course and includes the…