VU J TWO METHODS OF DETAILED GEOMORPHOLOGICAL MAPPING Method of the detailed geomorpho logical map of France Sj Method of the Unified Key to the detailed geomorphological map of the world SCALE 1:25000 0 _J 2km contourline interval 2.5metres LTvond surveyed by J.K.W. Niemeyer LITHOLOGY chalk, Upper Senonian somewhat resistant PERIGLACIAL FORMS AND FORMATIONS loess cover ACCUMULATION FORMSAND FORMATIONS colluvial loess gravel Valleys with flat bottom - edges of terraces, slope 45°—20° yy- edges of terracesslope 20°—5° T»f edges of terraces, slope <5° FORMATIONS DUETO WET TROPICAL CONDITIONS dissected peneplain loess cover,on slopes formed under periglacial conditions SS solifluction vu FORMS DUE TO HUMAN INFLUENCE hollowway Valley forms V -shaped rounded flat cartography: geografisch instituut, Utrecht printing: it.c., enschede SHADES OFCOLOURS INDICATING BOTH SLOPE CATEGORIES ANDGENETICTYPES OF SLOPES 0-2° 2-5° 5-19° slopes resulting from destruction by nival,cryogenic and thermokarst denudational processes slopes on eolian Sediments slopes resulting from deposition by denudational, fluvial and fluvio-denudational processes Q3 Würm glacial Q4 Holocene B FLUVIAL LANDFORMS I DESTRUCTIONAL LANDFORMS scarps of river terraces cut in alluvia and colluvia II CONSTRUCTIONAL LANDFORMS river-built plains consisting of colluvial loess H LANDFORMS DUETO NIVATION AND FROST ACTION I DESTRUCTIONAL LANDFORMS 0 dells K AEOLIAN LANDFORMS II DEPOSITIONAL LANDFORMS 1 1 1 1 il loess-cover mantling older relief (1—3 m.thick) N MAN-MADE LANDFORMS hollow way k.n.a.g., geografisch tijdschrift VIII(1974), no5 surveyed by R. P.GAVoslcuil

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Kartografie | 1974 | | pagina 41