Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

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Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 5 Non-renewable resources: Geology, geomorphology and engineering projects. Chairman: J. V. Taranik, Liaison: B. N. Koopmans

Write comment:: Wegen zu enger Bindung kommt es teilweise im Original zu Textverlust.

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Application of remote sensing in the field of experimental tectonics. J. Dehandschutter

Document type:: Multivolume work

Structure type:: Chapter

591 E lineaments graben eaments lénts Magdalena nterpretation ' S-structure, isation). The en major ENE he structure ynsedimentary om one slip- f is composed d is formed and E lineaments, nt crustal dis- d the extension, phology than the as, in the pre- extral slip on btained over he same funda- synforms and Oligo-Pliocene the southern rn couple of ke to the NNW, NW-SE trans- y interprete in the same an counter- invoked in ex- . Another con- d in fig. 5b rms comparable sn be argued f compressive nents after ety of possi- nses on the aservation ain, cannot concern is Figure 3. Photogeological interpretation of the Chimbwe-synform S-structure, Zambia. Depocentre cre ated by sinistral slip on left-stepping oblique-slip faults. Figure 4. Photogeological interpretation of the Rio Chicamocha area, Boyaca, Colombia. The axes of syn- forms are strongly reminiscent of pull-apart basin geometries (S- and Z-basins). limited to the east by the arm-pit of the Cordillera where recent uplift attained its highest levels (inset to fig. 4). 2.2 Structures related to horizontal compression Figure 5a shows a combination of Landsat interpreta tion and published geological mapping (Raasveldt 1956) of the area around Girardot, Colombia. The rather chaotic image is caused by coeval shortening around two almost mutually perpendicular axes. Shortening is not equally distributed over the area. It is limited to well determined linear zones appearing as linea ments in which uncompetent strata are folded en-éche lon around horizontal or plunging axes. More competent beds are merely uplifted or drape folded (Stearns 1978) over the linear zones of thickening. Figure 5b sche matically represents the contours of these intersecting linear uplifts. In the field, they indeed appear as narrow and faulted anticlines. During the uplift of the anticlines, rocks inside the rhombic area outlined by them, is stretched and passively faulted. These Figure 5a. Landsat interpretation of published geolo gical map Girardot area. Figure 5b. Interpretation Girardot area. Structural level 1 : active shortening and uplift in lineaments bordering a central stretched area; Structural level 2 : passive drape folding and forma tion of synforms, syntectonic sedimentation. areas appear as large-wavelength synforms. At the apogee of the border uplift, a central graben is created which links two corners of the rhomb. The graben is filled with molassic sediments. This interpretation is corrobated by partial obser vations in profiles where shortening is evident and expressed in minor fold axes accompanied by axial plane and shear cleavage. Here, in the emerald bearing part of the same Eastern Cordillera, detail field map ping reveals that synforms are contained within a framework of crossing ENE and SE sub-latitudinal line aments (fig. 5c). The lineaments are the topographic expression of lines of brecciated and metasomatically altered country rock. Some measured axes of minor folds group inside a statistical plane which is paral lel to each of the sub-latitudinal lineaments (Ea and Wa in fig. 5d). More fold axes project within a plane comprising the sub-meridional lineament direction which is conjugate to the first sub-latitudinal mem ber of respectively the eastern and the western pair (Wb and Eb in fig. 5d). On the megascopic outcrop scale, one sees two groups of narrow anticlines, each group with different axial strike and adjacent to the corresponding transverse brecciated lineaments. The interposed synform is terminated by the intersecting lineaments. The divergent strike of the axes of shor tening or anticlines imposes important thinning in the lowermost portion of the rhombic synform (fig. 5b).

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