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  • 1990-1994  (5)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Cytherean ridge belts connected with Tessera areas: Tensional or compressional structures? (1990)
    Springer
    Earth, moon and planets 49 (1990), S. 57-83 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The conclusion that the different ridge belt-bounded planitia and parquet terrains studied here define Venusian crustal plate-like units is evidently valid in the context of compressional ridge belt tectonics. The long ridge belts of Kamari and Tellus Dorsa, the ridge belts in the transition zone between Ishtar Terra and planitiae and Ausra Dorsa support the idea of NW-SE, (N-S) or E-W compression components, respectively. The planitia plates have been pushed from the south or south-east against the Ishtar Terra/Fortuna Tessera highland, which has opposed the movement, giving the impression of a relative southeast-directed force. The volcanic/diapiric transition zone between these colliding crustal units or plates evidently indicates mobilization of the subsurface unit overthrust by the parquet terrain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00053997
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ridge systems related to Martian impact craters (1992)
    Springer
    Earth, moon and planets 58 (1992), S. 65-78 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Wrinkle ridge systems within and around Martian highland craters were studied in order to find their basin-induced and regional aspects. Most prominent ridge directions indicate regional tectonic patterns. Radial ridges near large craters are often slightly deflected along regional or global ridge systems. Crater floor ridges have simpler local distributions. Smaller or older craters are less resistant against the effects of global or regional stress systems. In craters concentric ridge rings locate at 0.8 crater radius with additional minor rings at 0.66, 0.44 and 0.94 crater radius. This pattern illustrates compression of lava fill over buried topography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00058074
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Main fault tectonics of Meshkenet Tessera on Venus (1994)
    Springer
    Earth, moon and planets 65 (1994), S. 55-70 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The lengthy Meshkenet Tessera highland located between Ishtar Terra and coronae of the Nightingale group provides evidence of large-scale crustal movements. Its complex tectonic structures have various deformation geometries, thus indicating different tectonic sequences. The main parallel faults, first explained as rotational bookshelf faults, are more likely due to relative dextral direct shear movements of rectangular blocks. These faults have been active, possibly due to endogenic stresses, as indicated by mid-size ridge ranges which connect them to some of the large coronae. There are some compressional ridge belts around Meshkenet Tessera, while deformation within the tessera blocks has mostly been extensional.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00572199
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Crustal tectonic zone on Venus (1994)
    Springer
    Earth, moon and planets 64 (1994), S. 155-164 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Various tectonic structures to the south and southeast of Ishtar Terra indicate areal stresses. Compression from east-southeast against Ishtar Terra has resulted in ridge belt formation and surface bending at Salme Dorsa, probably along the seam between two crustal units. En echelon fault zone indicates dextral strike-slip shear(s) resulted in the westward movement of planitia crust related to Ishtar Terra. Meshkenet Tessera displays differential dextral strike-slip faulting where the southernmost bar-like blocks have had largest relative movements. Compression against Tusholi Corona has resulted in foreland surface bending similar to that of Salme Dorsa. The tectonic zone as a whole resembles a dextral transform fault extending from a concave arc in the west to another concave arc in the east. The Cytherean surface, crust or uppermost lithosphere seems to be able to transmit stresses over distances. Deeper understanding of these processes is needed to gain a new idea of the crustal deformation on terrestrial planets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00604487
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Ridge belt tectonics of Ganiki Planitia on Venus (1991)
    Springer
    Earth, moon and planets 53 (1991), S. 127-148 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The main major ridge belts of Ganiki Planitia on Venus (Laūma, Ahsonnutli and Pandrosos Dorsa) are part of the fan-shaped ridge belt complex along the 200
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00057428
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    Paper (German National Licenses)
    Fulltext
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