Normal faults Black & White Stock Photos
Geological and topographical maps, their interpretation and use, a handbook for the geologist and civil engineer . RAPHICAL MAPS Flaws, being more or less vertical fractures, usuallyoutcrop as comparatively straight lines, and in this theyresemble normal faults, with which they are readily con-fused on a casual examination of a map. Being due to horizontal movements, they will, unlikenormal faults, displace all outcrops which they cut to thesame extent, independently of the amount of dip possessedby the strata. Thus a flaw crossing gently-inclined stratapenetrated by dykes and cut by normal fa Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/geological-and-topographical-maps-their-interpretation-and-use-a-handbook-for-the-geologist-and-civil-engineer-raphical-maps-flaws-being-more-or-less-vertical-fractures-usuallyoutcrop-as-comparatively-straight-lines-and-in-this-theyresemble-normal-faults-with-which-they-are-readily-con-fused-on-a-casual-examination-of-a-map-being-due-to-horizontal-movements-they-will-unlikenormal-faults-displace-all-outcrops-which-they-cut-to-thesame-extent-independently-of-the-amount-of-dip-possessedby-the-strata-thus-a-flaw-crossing-gently-inclined-stratapenetrated-by-dykes-and-cut-by-normal-fa-image339956581.htmlRM2AN2A2D–Geological and topographical maps, their interpretation and use, a handbook for the geologist and civil engineer . RAPHICAL MAPS Flaws, being more or less vertical fractures, usuallyoutcrop as comparatively straight lines, and in this theyresemble normal faults, with which they are readily con-fused on a casual examination of a map. Being due to horizontal movements, they will, unlikenormal faults, displace all outcrops which they cut to thesame extent, independently of the amount of dip possessedby the strata. Thus a flaw crossing gently-inclined stratapenetrated by dykes and cut by normal fa
Structural geology . Fig. IS. To illustrate relative positions of blocks in thrust or reverse faulting. placements possible along a fault plane. The inadequacy ofthe old method has been realized in recent years by many workersin the field, especially by men who have found it necessary to work NOMENCLATURE OF FAULTS 35. Fig. 19. Normal faulting produced by horizontal movement along table tc Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/structural-geology-fig-is-to-illustrate-relative-positions-of-blocks-in-thrust-or-reverse-faulting-placements-possible-along-a-fault-plane-the-inadequacy-ofthe-old-method-has-been-realized-in-recent-years-by-many-workersin-the-field-especially-by-men-who-have-found-it-necessary-to-work-nomenclature-of-faults-35-fig-19-normal-faulting-produced-by-horizontal-movement-along-table-tc-image342712141.htmlRM2AWFTR9–Structural geology . Fig. IS. To illustrate relative positions of blocks in thrust or reverse faulting. placements possible along a fault plane. The inadequacy ofthe old method has been realized in recent years by many workersin the field, especially by men who have found it necessary to work NOMENCLATURE OF FAULTS 35. Fig. 19. Normal faulting produced by horizontal movement along table tc
Structural geology . Fig. 16. Diagram of a thrust fault. After Willis. 34 STRUCTURAL GEOLOGY pending upon the attitude of the beds with regard to the plane ofthe fault (Figs. 19, 20, 21, 22, 24, 25).. Fie. 17. To illustrate relative positions of blocks in normal or gravity faulting. In general we have attempted to use too simple a nomenclatureby which to classify faults. The classification is inadequate togive any accurate description of the great variety of relative dis- Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/structural-geology-fig-16-diagram-of-a-thrust-fault-after-willis-34-structural-geology-pending-upon-the-attitude-of-the-beds-with-regard-to-the-plane-ofthe-fault-figs-19-20-21-22-24-25-fie-17-to-illustrate-relative-positions-of-blocks-in-normal-or-gravity-faulting-in-general-we-have-attempted-to-use-too-simple-a-nomenclatureby-which-to-classify-faults-the-classification-is-inadequate-togive-any-accurate-description-of-the-great-variety-of-relative-dis-image342712859.htmlRM2AWFWMY–Structural geology . Fig. 16. Diagram of a thrust fault. After Willis. 34 STRUCTURAL GEOLOGY pending upon the attitude of the beds with regard to the plane ofthe fault (Figs. 19, 20, 21, 22, 24, 25).. Fie. 17. To illustrate relative positions of blocks in normal or gravity faulting. In general we have attempted to use too simple a nomenclatureby which to classify faults. The classification is inadequate togive any accurate description of the great variety of relative dis-
Structural geology . the fault displacement is horizontal and thereis no fault scarp, or where the fault scarp has been worn down byerosion. It will be noted that the classification of faults into normal orgravity and reverse or thrust faults, takes account only of apparentrelative displacement in a vertical section normal to the fault plane.It takes no account of horizontal or oblique displacement. Itexpresses merely the present relations of the beds in a two dimen-sional cross section rather than in three dimensions. It tells usnothing of the actual displacements of the beds. Hinge or pivota Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/structural-geology-the-fault-displacement-is-horizontal-and-thereis-no-fault-scarp-or-where-the-fault-scarp-has-been-worn-down-byerosion-it-will-be-noted-that-the-classification-of-faults-into-normal-orgravity-and-reverse-or-thrust-faults-takes-account-only-of-apparentrelative-displacement-in-a-vertical-section-normal-to-the-fault-planeit-takes-no-account-of-horizontal-or-oblique-displacement-itexpresses-merely-the-present-relations-of-the-beds-in-a-two-dimen-sional-cross-section-rather-than-in-three-dimensions-it-tells-usnothing-of-the-actual-displacements-of-the-beds-hinge-or-pivota-image342713178.htmlRM2AWFX4A–Structural geology . the fault displacement is horizontal and thereis no fault scarp, or where the fault scarp has been worn down byerosion. It will be noted that the classification of faults into normal orgravity and reverse or thrust faults, takes account only of apparentrelative displacement in a vertical section normal to the fault plane.It takes no account of horizontal or oblique displacement. Itexpresses merely the present relations of the beds in a two dimen-sional cross section rather than in three dimensions. It tells usnothing of the actual displacements of the beds. Hinge or pivota
Structural geology . Fie. 17. To illustrate relative positions of blocks in normal or gravity faulting. In general we have attempted to use too simple a nomenclatureby which to classify faults. The classification is inadequate togive any accurate description of the great variety of relative dis-. Fig. IS. To illustrate relative positions of blocks in thrust or reverse faulting. placements possible along a fault plane. The inadequacy ofthe old method has been realized in recent years by many workersin the field, especially by men who have found it necessary to work NOMENCLATURE OF FAULTS 35 Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/structural-geology-fie-17-to-illustrate-relative-positions-of-blocks-in-normal-or-gravity-faulting-in-general-we-have-attempted-to-use-too-simple-a-nomenclatureby-which-to-classify-faults-the-classification-is-inadequate-togive-any-accurate-description-of-the-great-variety-of-relative-dis-fig-is-to-illustrate-relative-positions-of-blocks-in-thrust-or-reverse-faulting-placements-possible-along-a-fault-plane-the-inadequacy-ofthe-old-method-has-been-realized-in-recent-years-by-many-workersin-the-field-especially-by-men-who-have-found-it-necessary-to-work-nomenclature-of-faults-35-image342712580.htmlRM2AWFWB0–Structural geology . Fie. 17. To illustrate relative positions of blocks in normal or gravity faulting. In general we have attempted to use too simple a nomenclatureby which to classify faults. The classification is inadequate togive any accurate description of the great variety of relative dis-. Fig. IS. To illustrate relative positions of blocks in thrust or reverse faulting. placements possible along a fault plane. The inadequacy ofthe old method has been realized in recent years by many workersin the field, especially by men who have found it necessary to work NOMENCLATURE OF FAULTS 35
. Practical wireless telegraphy; a complete text book for students of radio communication . orarily for hoisting purposes. If the reduction of aerial current inthe foregoing example is due to one of the latter causes, normal antenna current will beobtained when the vessel returns to sea. But it is hardly possible that a reduction ofcurrent as great as that above mentioned will be occasioned in this way. 244. The. Faults of the Transmitter.—Assume that spark fails to dischargeat the gap when the transmitting key is closed. Unless the apparatus has been actuallyinjured by an accident, the operat Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/practical-wireless-telegraphy-a-complete-text-book-for-students-of-radio-communication-orarily-for-hoisting-purposes-if-the-reduction-of-aerial-current-inthe-foregoing-example-is-due-to-one-of-the-latter-causes-normal-antenna-current-will-beobtained-when-the-vessel-returns-to-sea-but-it-is-hardly-possible-that-a-reduction-ofcurrent-as-great-as-that-above-mentioned-will-be-occasioned-in-this-way-244-the-faults-of-the-transmitterassume-that-spark-fails-to-dischargeat-the-gap-when-the-transmitting-key-is-closed-unless-the-apparatus-has-been-actuallyinjured-by-an-accident-the-operat-image375967796.htmlRM2CRJPN8–. Practical wireless telegraphy; a complete text book for students of radio communication . orarily for hoisting purposes. If the reduction of aerial current inthe foregoing example is due to one of the latter causes, normal antenna current will beobtained when the vessel returns to sea. But it is hardly possible that a reduction ofcurrent as great as that above mentioned will be occasioned in this way. 244. The. Faults of the Transmitter.—Assume that spark fails to dischargeat the gap when the transmitting key is closed. Unless the apparatus has been actuallyinjured by an accident, the operat
