First high-resolution stratigraphic column of the Martian north polar layered deposits
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Abstract
This study achieves the first high-spatial-resolution, layer-scale, measured stratigraphic column of the Martian north polar layered deposits using a 1m-posting DEM. The marker beds found throughout the upper North Polar Layered Deposits range in thickness from 1.6 m-16.0 m +/-1.4 m, and 6 of 13 marker beds are separated by ???25-35 m. Thin-layer sets have average layer separations of 1.6 m. These layer separations may account for the spectral-power-peaks found in previous brightness-profile analyses. Marker-bed layer thicknesses show a weak trend of decreasing thickness with depth that we interpret to potentially be the result of a decreased accumulation rate in the past, for those layers. However, the stratigraphic column reveals that a simple rhythmic or bundled layer sequence is not immediately apparent throughout the column, implying that the relationship between polar layer formation and cyclic climate forcing is quite complex.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | First high-resolution stratigraphic column of the Martian north polar layered deposits |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2009GL041642 |
| Volume | 37 |
| Issue | 7 |
| Year Published | 2010 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Astrogeology Science Center |
| Description | 5 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geophysical Research Letters |
| Other Geospatial | Mars |
| Google Analytic Metrics | Metrics page |