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J. C. Reed

Publications and source records attributed to J. C. Reed.

At least 37 records · Page 2Linked to original sources
USGS1970

Effects of oil development in Arctic America

Large and important discoveries of petroleum were made in northern Alaska in 1968 . The reserves were estimated then to be perhaps as much as ten thousand million barrels. Subsequent exploration has shown the resources to be much greater than was estimated earlier. Many problems must be solved before petroleum from northern Alaska reaches the world's markets. These problems are of three types: 1 , those related to exploring, developing, and operating under the physical environments of the region; 2 , those having to do with people—both the native people and those brought in from lower latitudes—and 3 , those concerning the protection of the natural environments. The problems are great, but so also are the reserves of petroleum. To the extent that the problems are not solved, the cost of development and operation will be higher, the use of people will be expensive and unsatisfactory, and the natural environments will be threatened. The whole effort could be jeopardized on those grounds.

Biological Conservation↗
USGS1955

Catoctin formation near Luray, Virginia

In the Blue Ridge Province of northern Virginia, Maryland, and southern Pennsylvania the established lower Cambrian beds are underlain by a thick sequence of greenstone and interbedded sedimentary rocks known as the Catoctin formation. In an effort to determine the thickness of the formation, its relationship to overlying and underlying rocks, and the original nature of the lavas from which the Catoctin greenstone was derived, an area near Luray, Virginia, was studied. There the Catoctin formation lies unconformably on granitic rocks. Its basal sedimentary layer ranges from a few inches to 150 feet thick and contains pebbles of underlying plutonic rocks. The erosion surface beneath the Catoctin is irregular, and in several places hills up to 750 feet high were buried beneath the Catoctin lavas. No important time break is indicated between the deposition of the Catoctin formation and of the overlying Cambrian sediments, and the Catoctin may be early Cambrian. Mineralogy, chemical composition, and primary structures indicate that the original Catoctin lavas were basaltic in composition and were probably normal plateau basalts. Columnar joints, amygdules, sedimentary dikes, flow breccias, low-dipping primary joints, and other primary structures are well preserved, and the flows in this area are believed to have been subaerial.

Virginia↗