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PIA09098-PSP_001513_2650_RED_new.tif
Pits in Polar Cap
Full Resolution
As part of its investigation of "Victoria Crater," Opportunity examined a promontory called "Cape Verde" from the vantage point of "Cape St. Mary," the next promontory clockwise around the crater's deeply scalloped rim.
View of 'Cape Verde' from 'Cape St. Mary'
Full Resolution
This HiRISE image covers the southwest portion of the terraces and floor of Holden Crater situated in southwest Margaritifer Terra. The HiRISE sub-frame shows the most clearly-evident image of a megabreccia on Mars. Breccia is a rock typically consisting of rock fragments of various sizes and shapes that have been broken, tumbled and cemented together in sudden geologic event (e.g., a landslide, a flashflood or even an impact-cratering event). If it were not for the dark sandy dunes dispersed through out the sub-image, this image could easily fool an expert into thinking that this image is actually a photograph of a hand sample of an impact breccia. The prefix "mega" implies that the breccia in the sub-image consists of clasts, or rock fragments, that are typically larger than a large house or a building. The rectangular megaclast near the center of the image is a colossal 50 x 25 meters (~150 X 75 feet). As mentioned in the transition image caption for Holden crater (TRA_000861_1530), the crater likely experienced extensive modification by running water, which is supported by observations of drainage and deposition into the crater from a large channel (Uzboi Valles) breaching Holden's southwest rim. While it is possible that the megabreccia formed from a catastrophic release of water into the crater, a more likely possibility is that it formed from the impact that created the approx. 150 km-in-diameter Holden crater. Popigai Crater, a terrestrial crater of half the size of Holden, possesses a similar occurrence of megabreccia with a similar range in megaclast size to the Holden crater example. An impact-generated megabreccia deposit, as observed in terrestrial craters, typically lies beneath the crater floor, so the exhumation of the megabreccia may be the result of down-cutting and erosion of water that once flowed through Uzboi Valles.
Holden Crater Megabreccia: A Telltale Sign of a Sudden and Violent Event
Full Resolution
PIA09096-1512-o-gram_only.tif
Radar View of Layering near Mars' North Pole, Orbit 1512
Full Resolution
PIA09095-1334-o-gram_only.tif
Radar View of Layering near Mars' South Pole, Orbit 1334
Full Resolution
PIA09093-20061213_FRT000028BA_07.tif
Clay at Nili Fossae
Full Resolution
PIA09094-20061213_FRT0000285F_07.tif
Gypsum at Olympia Undae
Full Resolution
PIA09077-SS4-1M210211247EFF758ZP2957M2M1.tif
Big Spherules near 'Victoria'
Full Resolution
PIA09084-SS3-1165600218_27856_Sol1019B_P2436_L2gam2.tif
View of 'Bottomless Bay' on Rim of 'Victoria' (Altered Contrast)
Full Resolution
PIA09085-SS2-1165600921_28885_Sol970B_P2400_L257Fsub.tif
View of 'Cape St. Mary' from 'Cape Verde' (False Color)
Full Resolution
PIA09086-SS1-1165335388_14936_Sol1006B_P2429_L257F.tif
View of 'Cape Verde' from 'Cape St. Mary' in Late Morning (False Color)
Full Resolution
PIA09076-RP3-1334-o-gram.tif
Interpreting Radar View near Mars' South Pole, Orbit 1334
Full Resolution
PIA09075-RP2-1360-o-gram.tif
Interpreting Radar View near Mars' South Pole, Orbit 1360
Full Resolution
PIA09074-RP1-1512-o-gram.tif
Interpreting Radar View near Mars' North Pole, Orbit 1512
Full Resolution
PIA09092-RA6-mi-king-george_unlabeled.tif
'King George Island' Brushed
Full Resolution
PIA09092-RA6-mi-king-george_annotated.tif
'King George Island' Brushed
Full Resolution
PIA09090-RA4-mcmurdo-pan-husband-hill_unlabeled.tif
Spirit's Winter Home
Full Resolution
PIA09090-RA4-mcmurdo-pan-husband-hill_annotated.tif
Spirit's Winter Home
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PIA09089-RA3-hirise-closeup_unlabeled.tif
Spirit's Tracks around 'Home Plate'
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PIA09089-RA3-hirise-closeup_annotated.tif
Spirit's Tracks around 'Home Plate'
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PIA09088-RA2-hirise-context_unlabeled.tif
Spirit's Winter Work Site
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PIA09088-RA2-hirise-context_annotated.tif
Spirit's Winter Work Site
Full Resolution
PIA09087-RA1-perspective_unlabeled.tif
Oblique View of Columbia Hills
Full Resolution
PIA09087-RA1-perspective_annotated.tif
Oblique View of Columbia Hills
Full Resolution
PIA09073-1360-o-gram_only.tif
Radar View of Layering near Mars' South Pole, Orbit 1360
Full Resolution
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