On the formation process of Vallis Schröteri

Details On the formation process of Vallis Schröteri On the formation process of Vallis Schröteri

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p23c1291h&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #P23C-1291

Mathematics

Logic

[5464] Planetary Sciences: Solid Surface Planets / Remote Sensing, [5480] Planetary Sciences: Solid Surface Planets / Volcanism

Scientific paper

The Vallis Schröteri exists on the Aristarchus Plateau (305 - 313 °E, 22 - 30 °N) which is the highland of the Moon consisting of the crustal material. The rille appears a singular sinuous rille as meandering primary rille including a more meandering inner rille. The negative meandering relief with no apparent levees should be formed by erosional mechanism of turbulent and sustained lava flow which was originated from higher area of the plateau. The depth profile of a rille is thought to be a key morphological parameter that may be closely associated with the formation of the rille. Using the newly acquired data, DTM of Kaguya, we measured the depth which was derived from subtracting floor’s height of the rille from rim’s height (surrounding ground’s height) of the rille as a function of distance from vent-like feature which is usually in a circular crater or in an elongated crater, sometime called a “cobra head crater”. The aspects of primary rille of Vallis Schröteri are 155 km in length from end to end, up to 6.0 km in width, and 500 m in depth (up to 750 m). In addition, our data suggests that the aspect of inner rille is ~240 km in length except for the lacking in its feature, 1.0 km in width, and 150 m in depth. Our goal of this research is to evaluate the erosional effect of the emplacement of lunar lava flow, and to estimate volcanic temperature of lava flow to produce the rille. As a result, we suppose that the Vallis Schröteri could be made by the lava flow with high temperature more than liquidus, which is consistent with the study of volcanic temperature on the Moon by other researchers.

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