Forest physiography; physiography of the United States and principles of soils in relation to forestry . (c) ofmatted roots of marine vegetation.^ The surface of the coastal plain of eastern Maryland is broad and 1 R. D. Salisbury, The Physical Geography of New Jersey, Final Rept. of the Geol. New Jersey, vol. 4, 1895, p. 54. 2 Idem, p. 64. •? C. Abbe, Jr., A General Report on the Physiography of Maryland, Including the Develop-ment of the Piedmont Plateau, Md. Weather Service, vol. i, pt. 2, p. 82. ATLANTIC AND GULF COASTAL PLAIN 517 even and resembles a smooth or gently undulating se
Forest physiography; physiography of the United States and principles of soils in relation to forestry . (c) ofmatted roots of marine vegetation.^ The surface of the coastal plain of eastern Maryland is broad and 1 R. D. Salisbury, The Physical Geography of New Jersey, Final Rept. of the Geol. New Jersey, vol. 4, 1895, p. 54. 2 Idem, p. 64. •? C. Abbe, Jr., A General Report on the Physiography of Maryland, Including the Develop-ment of the Piedmont Plateau, Md. Weather Service, vol. i, pt. 2, p. 82. ATLANTIC AND GULF COASTAL PLAIN 517 even and resembles a smooth or gently undulating sea floor. Many por-tions are characterized by long interstream stretches of plane surfaceof considerable breadth.^ The inequalities of the outer border of theMaryland plain were produced during a submergence which took placein very recent geologic time (Pleistocene); the plain has been so re-cently raised above the sea and to so small a height that time enoughhas not elapsed for the streams of gentle gradients to drain the swampsand lakes located upon them. It is characteristic of the swamps that. Contour intervals 10 feet Fig. 205. — Swampy divides in eastern Maryland between the Chesapeake and the Atlantic. The coastalplain is here so young and so little dissected that many of the original irregularities have not yet beendestroyed. (Hurlock quadrangle, U. S. Geol. Surv.) they are disposed chiefly along the main divides, as though dissection hadnot yet progressed to the headward sections of the streams, Fig. surface has a gentle seaward slope upon which has been developeda characteristic drainage system; the pattern is irregularly branching ordendritic, with the small streams commonly making almost a right anglewith the general trend of the larger streams at the junction. Smalllakes and swamps dot the surface and are due to inequalities on the seafloor produced by wave and current action. Except in their expanded lower courses the streams are small andunnavigable an
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
