red, black, white, grey, blue, soft, frank, french, green, long, ground, hard powdered, blackboard, sidewalk, austin, yellow, peter, upper, solid, lower, english, middle, natural, using pastel natural caucasian underlying precipitated

marl, downs, cliffs, dust, marks, cliff, pit, pits, tray, streams, hills, farm, mark, soils, beds, talks, ridge, boards, line, hill, lines, stream, creek, board, blocks, white, rock, talk, soil, up, box, ground, out, face uplands, rubble, quarry, drawings, circle, heightened, pencil, drawing, outlines, outline, river, powder, garden, surface, country upon deposits, formation

bedrock outcrops, outcrop, aquifer, formations, beneath, surfacesteep slopes, scarp, escarpment, bluffs, cliffs, cliff, hill, hills, bluff, ridges, mountain, ridge, rock, rocksbrush strokes, creek, markspastel pencils, pink, drawings, portrait, blue, drawing, yellow, color, green, wallsweathered bedrock, soils, rock, rocks, boards, gray, face, stone, stonesrock outcrops, outcrop, formations, ledge, strata, creek, fragments, quarry, quarries, escarpment, bluffs, garden, rubble, layers, cliffs, cliff, slopesniobrara river, formationcretaceous strata, formations, rocks, deposits, bedsfractured reservoirs, bedrock, porous, rock, reservoir, rocks, fragments, surfacemarl beds, formationoverlying strata, bedrock, rocks, formations, layers, beds, soft, rock, deposits, layer, soilflint quarries, ridge, hills, stones, creek, river, hillsoft pastels, pastel, brush, pink, mud, pencilcompacted soils, soil, powder, layers, layerrolling stones, hills, stone, uplands, grasslands, grassland, upland, downs, plateaupencil sketches, sketch, drawings, strokes, markings, marks, drawing, mark, linesupper cretaceous, maastrichtian, strata, layers, slopes, layergrassland soils, soilstone quarries, quarry, walls, wall, ledge, rubble, circles, blocks, flooraustin flint, warrenupland grassland, soils, plateau, streams, slopes, farmlithographic stones, stonequarry pits, pit, stones, stone, farm, hill, nearsouthern uplands, slopes, escarpmentmountain slopes, ridges, streams, ridge, stream, aquifer, grasslandsblue ridge, stripe, stripes, pencil, crossfresh rosemary, orangethin layer, layers, solid, strokes, stripe, stripesyellow stripe, stripes, markings, river, pencils, colorvertical stripes, strokes, stripe, lines, line, facies, cliff, cliffsdust particleslower cretaceous, maastrichtian, strata, slopesstrata overlyingmagic marker, circle, mountainreservoir facies, rocks, bag, rockfacies rockscliff ledge, face, wallsred stripe, cross, stripes, sea, marl, bluff, riverbluff creekwet deposition, grassland, grasslands, soils, mud, soilorange stripe, stripes, markings, river, color, yellowsubsoil layers, beneath, layerunderlying bedrock, aquifer, stratadry deposition, grasslands, grassland, powder, creek, uplands, sticks, powdered, brush, upland, soilshill slopesmarking pencils, pencilthick layer, brush, layers, walls, mudcrushed stone, beneath, rock, redporous layer, formations, rocks, rock, strata, solid, soils, layers, particlescarved stone, stones, figuresrocks outcrop, overlyingground floor, beneathsoils overlying, containingcreek reservoir, beds, bedriver bluffs, bedsbag containingwhite stripes, stripe, marl, markings, powdersolid particles, bedrock, rock, circles, lines, line, lumpsdeposits overlyingmud walls, pits, pit, creekpink stripe, stripes, colorrubble stone, stones, walls, wallbrown markings, stripe, stripes, bagmixed bag, layerfine powder, particles, dustline drawingsbare outlines, rock, boards, outline, walls, soil, ground, rocks, hillspowder particles, river, blue, mixturewarren austintray containinggreen stripe, hills, stripessoil particles, layersnative grasslands, grasslandgrey stone, flint, stonesblack stripe, stripes, hills, magic, markings, seabox containingstream bedssurface layer, markings, layers, outcropsquarries nearlayer overlyingspread acrossscarp facedrawing pencils, boards, boardaquifer beneathmiddle strata, cretaceousmarker bedsmixture containinggray stone, stripe, stripesnatural grasslandspits containingledge beneath, belowgarden bedsoutline sketch, drawingsrich grasslands, soilsbroken hill, pieces, fragmentshard lumpssea floor, cliff, cliffsplateau slopescaucasian mountainescarpment nearstones marking