![]() Geologic Map of the Mylitta Fluctus Quadrangle (V-61), Venus. The limited but widespread lithospheric mobility of Venus, in marked contrast to the tectonic styles indicative of a static lithosphere on Mercury, the Moon, and Mars, may offer parallels to interior–surface coupling on the early Earth, when global heat flux was substantially higher, and the lithosphere generally thinner, than today. The tropical tasar silkworm, Antheraea mylitta, is a semi-domesticated vanya silk-producing. Lithospheric stresses calculated from interior viscous flow models consistent with long-wavelength gravity and topography are sufficient to drive brittle failure in the upper Venus crust in all areas where these blocks are present, confirming that interior convective motion can provide a mechanism for driving deformation at the surface. At least some of this deformation on Venus postdates the emplacement of the locally youngest plains materials. (a) Radar-bright Mylitta Fluctus lobe with channel inundated by subsequently emplaced radar-dark lava. We report a globally distributed set of crustal blocks in the Venus lowlands that show evidence for having rotated and/or moved laterally relative to one another, akin to jostling pack ice. Download scientific diagram Examples of inundated-channel morphologies. The extent of surface mobility on Venus driven by mantle convection, however, and the style and scale of its tectonic expression have been unclear. INTRODUCTION The Magellan Mission The Magellan spacecraft orbited Venus from August 10, 1990, until it plunged into the Venusian atmosphere on October 12, 1994. However, the Venus surface has been extensively deformed, and convection of the underlying mantle, possibly acting in concert with a low-strength lower crust, has been suggested as a source of some surface horizontal strains. Department of the Interior | U.S.Venus has been thought to possess a globally continuous lithosphere, in contrast to the mosaic of mobile tectonic plates that characterizes Earth. Mylitta Fluctus is a volcanic flow field that covers approximately 300,000 km2 in southern Lavinia Planitia. Telephone: (888) ASK-USGS e-mail: FOIA Privacy Policies and Notices This map is available in paper form from: | Publications main page | Other Planetary Maps | The southeastern part of the map area shows the western part of the upland of Lada Terra, the summit of which is about 3 km above mean planetary radius.ĭownload this map as an ~47" x 42" PDF document (sim2920.pdf 17.7 MB)ĭownload the accompanying pamphlet as a 19-page PDF document (sim2920pamphlet.pdf 976 kB)įor questions about the content of this report, contact Ken Tanakaĭownload a free copy of the current version of Adobe Reader. The area is similar in size to the Columbia. Roberts and others published Mylitta Fluctus, Venus: Flow Characteristics and Sources Find, read and cite all the research. Based on stratigraphic relationships, these flow fields represent some of the most recent resurfacing (locally to regionally) within the extensive lowland plains e.g., Crown et al. The northern third of the quadrangle covers the southern part of Lavinia Planitia, which represents a class of equidimensional lowlands on Venus (Bindschadler and others, 1992b) and is as deep as about 1.5–2 km below mean planetary radius. Mylitta Fluctus is a complex of six flow fields in the southern hemisphere of Venus Roberts et al., 1992. across Venus: Turgmam Fluctus, Zipaltonal Fluctus, the Tuli Mons/Uilata Fluctus flow complex, the Var Mons volcanic center, and Mylitta Fluctus (Figure 2). The Mylitta Fluctus quadrangle (V-61) is in the southern hemisphere of Venus and extends from lat 50° to 75° S. De fluctus is met een lengte van 1250 kilometer een van de grootste stromen op Venus en bevindt zich in het gelijknamige quadrangle Mylitta Fluctus (V-61). Planetary nomenclature, like terrestrial nomenclature, is used to uniquely identify a feature on the surface of a planet or satellite so that the feature can be easily located, described, and discussed (Hargitai 2011). Mylitta Fluctus werd in 1991 genoemd naar Mylitta, een Semitische godin. Magellan Mission objectives included (1) improving the knowledge of the geological processes, surface properties, and geologic history of Venus by analysis of surface radar characteristics, topography, and morphology and (2) improving the knowledge of the geophysics of Venus by analysis of Venusian gravity. Mylitta Fluctus is een lavastroom op de planeet Venus. The Magellan spacecraft orbited Venus from August 10, 1990, until it plunged into the Venusian atmosphere on October 12, 1994. Version 1.0 Geologic Map of the Mylitta Fluctus Quadrangle (V-61), Venus By Mikhail A.
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