by U.S. G.P.O., For sale by the Books and Open-File Reports Section, U.S. Geological Survey in Washington, Denver, CO .
Written in English
|Statement||by H.W. Markewich ... [et al.].|
|Series||Pedologic studies in the eastern United States, relations to geology ;, ch. A, U.S. Geological Survey bulletin ;, 1589-A|
|Contributions||Markewich, Helaine W., United States. Soil Conservation Service.|
|LC Classifications||QE75 .B9 no. 1589-A, S599.M3 .B9 no. 1589-A|
|The Physical Object|
|Pagination||vii, 34 p. :|
|Number of Pages||34|
|LC Control Number||85600233|
USGS Bulletin A Age Relations Between Soils and Geology in the Coastal Plain of Maryland and Virginia [H. W. Markewich, M. J. Pavich, M. J. Mausbach, R. L. Hall. An overview of the geology by physiographic province is provided below. Atlantic Coastal Plain. The Atlantic Coastal Plain Province is underlain by a wedge of unconsolidated sediments including gravel, sand, silt, and clay, which overlaps the rocks of the eastern Piedmont along an irregular line of contact known as the Fall Zone. Large tidal rivers, such as the Potomac, Rappahannock, York, and James, flow southeastward across the Coastal Plain to the Chesapeake Bay, in turn, empties into the Atlantic Ocean. Low barrier islands frame the Atlantic edge of Virginia’s Eastern Shore. The Coastal Plain is a terraced landscape that stair-steps down towards the coast and to the major rivers. The Virginia Coastal Plain is underlain by a thick wedge of sediments that increases in thickness from a featheredge near the Fall Zone to more than 4, meters under the continental shelf. These sediments rest on an eroded surface of Precambrian to early Mesozoic rock.
RELATIONSHIPS BETWEEN GEOLOGY AND ENGINEERING CHARACTERISTICS OF SOILS AND WEATHERED ROCKS OF FAIRFAX COUNTY AND VICINITY, VIRGINIA By STEPHEN F. OBERMEIER and WILLIAM H. LANGER ABSTRACT This report describes, in map-related format, the engineering prop erties and behavior of soils and weathered rocks in and near Fairfax County, by: GEOLOGY AND SOILS OF THE BRANDYWINE AREA, MARYLAND HARDPAN SOILS OF THE COASTAL PLAIN OF SOUTHERN MARYLAND By C. C. NIKIFOROFF* ABSTRACT Soil, a function of the environment, is a natural combination of parent material, landform, climate, and biotic factors. The concept of the parent material is vague, but this material isCited by: 5. Maryland has been called â€œAmerica in miniature,â€ because the state embodies a wide range of our nation’s landscape features. From sandy beaches on the Atlantic Ocean, across flat fields of the Coastal Plain on the Eastern Shore, to the rolling hills and tumbling rivers of the state’s central counties, and concluding with the mountainous terrain of Western Maryland, the Free State /5(9). Virtually the entire geology of Virginia has been compressed, folded, thrust faulted, and telescoped so that most of the rocks have been moved from their site of origin and stacked like a shuffled and bent deck of cards. The exceptions are the Allegheny Plateau and the Coastal Plain.
Coastal Plain Rocks and Sediments The information contained on this page was adapted from Maryland Geological Survey's Geologic Map of Maryland (). This information reflects geologic interpretations from over 20 years ago and do not necessarily represent an accurate interpretation of . The project will initially focus on a thirty-mile wide corridor along the western margin of the Virginia Coastal Plain, where formations of Miocene and Pliocene age either crop out or are situated at relatively shallow depths beneath the sedimentary cover. For this area, DGMR scientists will. Virginia is for Lavas- The Catoctin Formation. Many of the highest peaks in Shenandoah National Park (including Hawksbill, Stony Man, and Hightop Mountain, just to name a few) are underlain by distinctive bluish-green rocks that were once ancient lava flows (Virginia is for Lavas!), and are part of a geologic unit known as the Catoctin Formation. Figures for The Geology of the Virginia Coast. The shaded inset in the lower panel is the equivalent age and elevation range as the upper panel. of late stage 5 and stage 3 highstand shorelines preserved on the outer coastal plain of Virginia and North Carolina approximately 22 to 26 m higher than expected from records of global ice.