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  "title": "When Lava Gets Constricted",
  "authors": "HiRISE",
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    "excerpt": "Here we see the remnants of a flow of lava that encountered a narrow constriction point in a ridge or hill across its path."
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        "text": "HiPOD: 3 July 2020"
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        "text": "When Lava Gets Constricted"
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        "caption": "Less than 5 km across. (NASA/JPL/UArizona)",
        "URL": "https://static.uahirise.org/anews/2020-07-03/ESP_020580_2035.jpg"
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        "text": "<p><br />As revealed in a Context Camera image of this area, a flow of lava coming from the southwest has encountered a narrow constriction point in a discontinuous ridge or hill across its path.</p>"
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        "text": "<p><br />This constriction seems to have disrupted the flow and produced a platy-ridged surface on the down-flow side of the constriction point. By studying how lava reacts to obstacles, scientists may be able to learn about the thickness, viscosity (or stickiness), and strength of the lava flow, which in turn could help constrain the composition and temperature of the lava.</p>"
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        "text": "<p><br />This location is important because it could help to provide constraints on the study of flow directions that would link lava in the western and eastern Tartarus Colles regions of Mars.<br /></p>"
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    {
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        "layout": "fullBleedLayout",
        "caption": "A closer look at some of the platy ridges. Less than 5 km across. (NASA/JPL/UArizona)",
        "URL": "https://static.uahirise.org/anews/2020-07-03/ESP_020580_2035-2.jpg"
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        "text": "<p>ID: <a href='https://uahirise.org/ESP_020580_2035'>ESP_020580_2035</a><br />date: 17 December 2010<br />altitude: 288 km<br /><br />NASA/JPL/UArizona</a></p>"
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        "text": "Black and white image is less than 5 km across; enhanced color image is less than 1 km. For full images with scalebars, see the above ID link to our website.<br /><br />"
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