{ "title": "HiPOD", "metadata": { "thumbnailURL": "bundle://header.jpg", "excerpt": "This image shows a graben (a trough formed when the ground drops between two parallel faults) and a lava flow in the Tharsis volcanic province of Mars." }, "version": "1.5", "identifier": "ESP_019747_1975", "language": "en", "layout": { "columns": 10, "width": 1024, "margin": 85, "gutter": 20 }, "documentStyle": { "backgroundColor": "#faf7f2" }, "components": [ { "role": "heading1", "layout": "heading1Layout", "text": "HiPOD: THURSDAY, 14 NOVEMBER 2019" }, { "role": "divider", "layout": "bigDividerLayout", "stroke": { "width": 3, "color": "#8c2028" } }, { "role": "title", "layout": "halfMarginBelowLayout", "text": "A Graben Cutting a Lava Flow" }, { "role": "photo", "layout": "fullBleedLayout", "caption": "Less than 5 km across. (NASA/JPL/University of Arizona)", "URL": "bundle://ESP_019747_1975-main-11-14.jpg" }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "


This image shows a graben (a trough formed when the ground drops between two parallel faults) and a lava flow in the Tharsis volcanic province of Mars.

" }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "

Relations like this can be used to establish the relative ages of features on the surface. In this case, the trough cuts the lava flow, indicating that it is younger. If the trough existed when the flow occurred, lava would have spilled into and flooded it before the flow was able to proceed to the north.

" }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "

Another interesting feature in this lava flow is the trace of a central channel, indicated by two roughly parallel linear features within the flow. After the first lava flowed across this area, the rest of the flow was probably concentrated in this inner channel. The channel was still full of lava when the flow stopped, and so the surface is still at the same height as the rest of the flow.

" }, { "role": "gallery", "layout": "noMarginLayout", "animation": { "type": "move_in", "preferredStartingPosition": "right" }, "items": [ { "URL": "bundle://ESP_019747_1975-11-14-02.jpg", "caption": "A cutout showing more detail of the graben and numerous boulders. Less than 1 km across. (NASA/JPL/University of Arizona)" }, { "URL": "bundle://ESP_019747_1975-map.jpg" } ] }, { "role": "body", "format": "html", "text": "
" }, { "role": "divider", "layout": "bigDividerLayout", "stroke": { "width": 3, "color": "#528cb9" } }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "

ID: ESP_019747_1975
date: 13 October 2010
altitude: 276 km

NASA/JPL/University of Arizona

" }, { "role": "caption", "format": "html", "layout": "halfMarginBothLayout", "text": "Black and white is less than 5 km across, enhanced color is less than 1 km across. For images with scalebars, see the above ID link to our website.
" } ], "textStyles": {}, "componentLayouts": { "noMarginLayout": { "columnStart": 0, "columnSpan": 7 }, "niceMarginLayout": { "columnStart": 0, "columnSpan": 10 }, "hipodMarginLayout": { "columnStart": 0, "columnSpan": 9 }, "heading1Layout": { "columnStart": 0, "columnSpan": 7, "margin": { "top": 24, "bottom": 3 } }, "halfMarginBelowLayout": { "columnStart": 0, "columnSpan": 9, "margin": { "bottom": 12 } }, "fullMarginBelowLayout": { "columnStart": 0, "columnSpan": 7, "margin": { "bottom": 24 } }, "fullMarginAboveHalfBelowLayout": { "columnStart": 0, "columnSpan": 7, "margin": { "top": 24, "bottom": 12 } }, "bigDividerLayout": { "ignoreDocumentMargin": "right", "columnStart": 0, "columnSpan": 10, "margin": { "top": 6, "bottom": 6 } }, "fullBleedLayout": { "ignoreDocumentMargin": true }, "halfMarginBothLayout": { "columnStart": 0, "columnSpan": 7, "margin": { "top": 12, "bottom": 12 } }, "fullMarginAboveLayout": { "columnStart": 0, "columnSpan": 7, "margin": { "top": 24 } }, "halfMarginAboveQuarterBelowLayout": { "columnStart": 0, "columnSpan": 7, "margin": { "top": 12, "bottom": 6 } } }, "componentStyles": {}, "componentTextStyles": { "default": { "fontName": "DINAlternate-Bold", "textColor": "#222222", "fontSize": 16, "lineHeight": 22, "linkStyle": { "textColor": "#D5B327" } }, "default-body": { "fontName": "AppleSDGothicNeo-Regular", "fontSize": 20, "lineHeight": 30, "paragraphSpacingBefore": 12, "paragraphSpacingAfter": 12 }, "default-title": { "fontName": "DINAlternate-Bold", "fontSize": 42, "lineHeight": 44, "textColor": "#2e5284" }, "default-intro": { "fontName": "DINAlternate-Bold", "fontSize": 18, "lineHeight": 22, "textColor": "#A6AAA9" }, "default-byline": { "fontName": "DINAlternate-Bold", "fontSize": 15, "lineHeight": 18, "textColor": "#53585F" }, "default-heading2": { "fontName": "DINAlternate-Bold", "tracking": 0.05, "textColor": "#53585F" }, "default-heading1": { "fontName": "DINAlternate-Bold", "tracking": 0.12, "textColor": "#53585F" }, "bodyFirstDropCap": { "dropCapStyle": { "fontName": "DINAlternate-Bold", "textColor": "#A6AAA9", "numberOfLines": 2 } }, "default-heading2": { "fontName": "IowanOldStyle-Roman", "fontSize": 48, "lineHeight": 44, "textColor": "#53585F" }, "default-caption": { "fontName": "IowanOldStyle-Italic", "fontSize": 14, "lineHeight": 18, "paragraphSpacingBefore": 12, "paragraphSpacingAfter": 12, "textColor": "#53585F" }, "default-pullquote": { "fontName": "DINAlternate-Bold", "fontSize": 30, "lineHeight": 36, "textColor": "#A6AAA9", "hangingPunctuation": true }, "attribution": { "fontName": "DINAlternate-Bold", "fontSize": 12, "lineHeight": 16, "tracking": 0.12, "textColor": "#53585F", "textAlignment": "right" } } }