Supporting Online Material for Mars North Polar Deposits: Stratigraphy, Age, and Geodynamical Response
نویسندگان
چکیده
Roger J. Phillips,* Maria T. Zuber, Suzanne E. Smrekar, Michael T. Mellon, James W. Head, Kenneth L. Tanaka, Nathaniel E. Putzig, Sarah M. Milkovich, Bruce A. Campbell, Jeffrey J. Plaut, Ali Safaeinili, Roberto Seu, Daniela Biccari, Lynn M. Carter, Giovanni Picardi, Roberto Orosei, P. Surdas Mohit, Essam Heggy, Richard W. Zurek, Anthony F. Egan, Emanuele Giacomoni, Federica Russo, Marco Cutigni, Elena Pettinelli, John W. Holt, Carl J. Leuschen, Lucia Marinangeli
منابع مشابه
Mars north polar deposits: stratigraphy, age, and geodynamical response.
The Shallow Radar (SHARAD) on the Mars Reconnaissance Orbiter has imaged the internal stratigraphy of the north polar layered deposits of Mars. Radar reflections within the deposits reveal a laterally continuous deposition of layers, which typically consist of four packets of finely spaced reflectors separated by homogeneous interpacket regions of nearly pure ice. The packet/interpacket structu...
متن کاملOrigin and characteristics of the Mars north polar basal unit and implications for polar geologic history
Building upon previous studies, we have used Mars Orbiter Camera and Mars Orbiter Laser Altimeter data to characterize in detail the newly discovered north polar basal unit. Lying stratigraphically between the polar layered deposits, from which it is likely separated by an unconformity, and the Vastitas Borealis Formation, this unit has introduced new complexity into north polar stratigraphy an...
متن کاملNorth polar stratigraphy and the paleo-erg of Mars
[1] An accurate self-consistent way of coregistering the imaging and topographic data sets of the Mars Global Surveyor mission was developed and used to begin a stratigraphic analysis of the northern polar region. A distinct change in the layering style exists at a definite stratigraphic horizon near the base of the north polar layered deposits. Occurrences of the contact between two distinct l...
متن کاملIntegrating radar stratigraphy with high resolution visible stratigraphy of the north polar layered deposits, Mars
Shallow Radar (SHARAD) on board NASA’s Mars Reconnaissance Orbiter has successfully detected tens of reflectors in the subsurface of the north polar layered deposits (NPLD) of Mars. Radar reflections are hypothesized to originate from the same material interfaces that result in visible layering. As a first step towards verifying this assumption, this study uses signal analyses and geometric com...
متن کاملStratigraphic analysis of the northern polar layered deposits of Mars: Implications for recent climate history
We examine the stratigraphy of the polar layered deposits (PLD) within the north polar cap of Mars to assess its layer continuity, correlations, cyclicity and structure and implications for the recent climate record. PLD sequences characterized using Fourier analysis and curve shape matching algorithms show that layers correlate throughout the upper part of the PLD. We tested for cyclicity and ...
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