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Saddle (landform)

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is a ridge along the high point of the saddle, as well as between the two peaks and so defines the major reference axis. A saddle can vary from a sharp, narrow gap to a broad, comfortable, sway-backed, shallow valley so long as it is both the high point in the sloping faces which descends to lower
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elevations and the low area between the two (or three or four.) flanking summits. Concurrently, along a different axis, it is the low point between two peaks, so as such, is the likely 'optimal' high point in a pass if the saddle is traversed by a track, road or railway.
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or peaks) which has two wings which span the divide (the line between the two prominences) by crossing the divide at an angle, and, so is concurrently the local highpoint of the land surface which falls off in the lower direction. That is, the
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USGS topographic map of ridges and saddles near Hazelton, Pennsylvania (closer view). The points -A-, -B-, -C-, -D- and, -E- all represent saddles — relative minimums oriented to two or more nearby peaks, but a local maxima relative to lower
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is not universally agreed upon. A col is sometimes defined as the lowest point on a saddle co-linear with the drainage divide that connects the peaks. Whittow describes a saddle as
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in the perpendicular axis, simultaneously; that point being by definition the col of the saddle.
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implies that a col is the lowest point on the saddle. Monkhouse describes a saddle as a
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the distance from a prominence which is also a minimum to the point of the same height
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derives its name from the fact that the prototypical example in two dimensions is a
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The term col tends to be associated more with mountain, rather than hill, ranges.
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Cross-section diagram of three hills, with two saddles marked by X.
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between two hills or mountains is the region surrounding the
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The height of a summit above its highest saddle (called the
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Soanes, Catherine and Stevenson, Angus (ed.) (2005).
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A saddle is the lowest area between two highlands (
175:"low point or col on a ridge between two summits" 1093: 39: • The diagram illustrates the 256:in a different direction, resembling a riding 408: 264:between two peaks forming a landform saddle. 126:(lower edge, left from middle) in Tyrolia in 53: • The 'isolation' (German: 59: • "sattel zwischen" means 415: 401: 365:Chambers 21st Century Dictionary, Allied. 25: • There are three peaks ( 154: 117: 73: 18: 229: 194:) is effectively a measure of a hill's 63:, so the labeling is saying the saddle 1094: 422: 396: 211: 169:The relationship between saddles and 658:List of tectonic plate interactions 164: 13: 14: 1123: 312:. London: Penguin, 1984, p. 464. 1076: 1075: 376:"Glossary of Structural Geology" 310:Dictionary of Physical Geography 16:Land connecting two high points 368: 359: 346: 323: 302: 274: 130:. It is frequently crossed by 1: 295: 113: 332:Oxford Dictionary of English 179:Oxford Dictionary of English 7: 10: 1128: 233: 1071: 1043: 1010: 992: 939: 867: 804: 761: 743:Thick-skinned deformation 537: 496: 430: 354:A Dictionary of Geography 748:Thin-skinned deformation 524:Stereographic projection 267: 514:Orthographic projection 497:Measurement conventions 443:LamĂ©'s stress ellipsoid 352:Monkhouse, FJ (1965). 308:Whittow, John (1984). 252:in one direction, and 161: 139: 106:along one axis, and a 79: 71: 67:is the same saddle as 1025:Paleostress inversion 718:Strike-slip tectonics 588:Extensional tectonics 568:Continental collision 438:Deformation mechanism 280:See the center image 158: 134:on the way up to the 121: 77: 41:topographic isolation 22: 603:Fold and thrust belt 240:A 'saddle point' in 230:Mathematical saddles 78:Route along a saddle 1035:Section restoration 911:Rock microstructure 573:Convergent boundary 473:Strain partitioning 458:Overburden pressure 448:Mohr–Coulomb theory 35:'A', 'B', & 'C' 1112:Structural geology 1012:Kinematic analysis 668:Mountain formation 583:Divergent boundary 548:Accretionary wedge 424:Structural geology 218:structural geology 212:Structural geology 162: 140: 80: 72: 1089: 1088: 1020:3D fold evolution 906:Pressure solution 901:Oblique foliation 781:Exfoliation joint 771:Columnar jointing 431:Underlying theory 341:978-0-19-861057-1 1119: 1079: 1078: 824:Detachment fault 819:Cataclastic rock 753:Thrust tectonics 723:Structural basin 698:Pull-apart basin 638:Horst and graben 417: 410: 403: 394: 393: 387: 386: 384: 382: 372: 366: 363: 357: 350: 344: 327: 321: 306: 289: 278: 165:Saddles and cols 98:between the two 1127: 1126: 1122: 1121: 1120: 1118: 1117: 1116: 1092: 1091: 1090: 1085: 1067: 1039: 1006: 988: 959:Detachment fold 935: 863: 859:Transform fault 834:Fault mechanics 800: 757: 693:Plate tectonics 643:Intra-arc basin 533: 504:Brunton compass 492: 426: 421: 391: 390: 380: 378: 374: 373: 369: 364: 360: 351: 347: 328: 324: 307: 303: 298: 293: 292: 279: 275: 270: 238: 232: 214: 167: 149:drainage divide 116: 69:between A and B 65:between A and C 58: 52: 38: 24: 17: 12: 11: 5: 1125: 1115: 1114: 1109: 1104: 1087: 1086: 1084: 1083: 1072: 1069: 1068: 1066: 1065: 1060: 1055: 1049: 1047: 1041: 1040: 1038: 1037: 1032: 1027: 1022: 1016: 1014: 1008: 1007: 1005: 1004: 998: 996: 990: 989: 987: 986: 981: 976: 971: 966: 961: 956: 951: 945: 943: 937: 936: 934: 933: 928: 926:Tectonic phase 923: 918: 913: 908: 903: 898: 893: 888: 883: 877: 875: 865: 864: 862: 861: 856: 851: 846: 841: 836: 831: 826: 821: 816: 810: 808: 802: 801: 799: 798: 793: 788: 783: 778: 773: 767: 765: 759: 758: 756: 755: 750: 745: 740: 735: 730: 725: 720: 715: 710: 705: 700: 695: 690: 688:Passive margin 685: 680: 675: 670: 665: 660: 655: 650: 645: 640: 635: 630: 625: 620: 615: 613:Foreland basin 610: 608:Fold mountains 605: 600: 595: 590: 585: 580: 575: 570: 565: 563:Back-arc basin 560: 555: 550: 544: 542: 535: 534: 532: 531: 529:Strike and dip 526: 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188: 185: 184: 180: 177:, whilst the 176: 172: 157: 153: 150: 145: 137: 133: 129: 125: 120: 111: 109: 105: 104:relative high 101: 97: 93: 89: 85: 76: 70: 66: 62: 56: 50: 46: 42: 36: 33:shown labeled 32: 28: 21: 849:Thrust fault 712: 538:Large-scale 509:Inclinometer 483:Stress field 379:. Retrieved 370: 361: 353: 348: 330: 325: 309: 304: 281: 276: 253: 249: 239: 236:Saddle point 226: 215: 208: 202:between two 189: 186: 182: 174: 168: 141: 132:mountaineers 123: 108:relative low 88:saddle point 83: 81: 68: 64: 60: 54: 48: 44: 34: 27:Schartenhöhe 26: 1030:Paleostress 916:Slickenside 891:Crenulation 844:Fault trace 839:Fault scarp 829:Disturbance 814:Cataclasite 703:Rift valley 623:Half-graben 593:Fault block 578:DĂ©collement 282:point '-C-' 254:curves down 242:mathematics 144:prominences 122:The saddle 31:prominences 1096:Categories 1058:Pure shear 1045:Shear zone 1002:Competence 886:Compaction 763:Fracturing 558:Autochthon 553:Allochthon 356:, 2nd edn. 296:References 288:map image. 196:prominence 192:key saddle 136:Wildspitze 114:Topography 1102:Landforms 994:Boudinage 974:Monocline 969:Homocline 949:Anticline 931:Tectonite 921:Stylolite 896:Fissility 873:lineation 869:Foliation 733:Syneclise 678:Obduction 648:Inversion 540:tectonics 250:curves up 222:anticline 200:watershed 43:(German: 1081:Category 1053:Mylonite 984:Vergence 979:Syncline 881:Cleavage 806:Faulting 55:Dominanz 45:Dominanz 1107:Oronyms 954:Chevron 941:Folding 786:Fissure 738:Terrane 683:Orogeny 663:MĂ©lange 598:Fenster 488:Tension 284:in the 246:surface 128:Austria 100:massifs 728:Suture 713:Saddle 653:Klippe 618:Graben 478:Stress 468:Strain 381:15 May 339:  316:  258:saddle 84:saddle 1063:Shear 791:Joint 673:Nappe 633:Horst 628:Horse 268:Notes 260:or a 248:that 204:hills 160:land. 29:) or 964:Dome 871:and 796:Vein 776:Dike 708:Rift 519:Rake 383:2016 337:ISBN 314:ISBN 171:cols 96:pass 82:The 216:In 92:col 1098:: 224:. 206:. 47:)- 416:e 409:t 402:v 385:. 343:. 320:. 51:. 37:.

Index


prominences
topographic isolation

saddle point
col
pass
massifs
relative high
relative low

Austria
mountaineers
Wildspitze
prominences
drainage divide

cols
Oxford Dictionary of English
key saddle
prominence
watershed
hills
structural geology
anticline
Saddle point
mathematics
surface
saddle
mountain pass

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