{"id":180406,"date":"2023-04-10T10:47:24","date_gmt":"2023-04-10T14:47:24","guid":{"rendered":"https:\/\/web.uri.edu\/gso\/?p=180406"},"modified":"2023-07-14T13:51:44","modified_gmt":"2023-07-14T17:51:44","slug":"astrobiology-sediment-isotherms","status":"publish","type":"post","link":"https:\/\/web.uri.edu\/gso\/uncategorized\/astrobiology-sediment-isotherms\/","title":{"rendered":"Astrobiology: Sediment Isotherms"},"content":{"rendered":"<p>The depth to sediment isotherms presented in this web site are based on two data sets. The first is the thermal data compiled by <a href=\"http:\/\/deschutes.gso.uri.edu\/subsurface\/linksandreferences.htm\">Pollack et al., 1993<\/a>. Their data coverage is shown below:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-180407 size-half_column\" src=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/THERMALDATACOVERAGE-500x245.gif\" alt=\"\" width=\"500\" height=\"245\" srcset=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/THERMALDATACOVERAGE-500x245.gif 500w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/THERMALDATACOVERAGE-300x147.gif 300w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/THERMALDATACOVERAGE-768x377.gif 768w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/THERMALDATACOVERAGE-364x178.gif 364w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><span style=\"font-family: Arial, Helvetica, sans-serif\">The second data set is the depth to basement. More precisely defined as depth to acoustic basement. &nbsp;This data set was compiled by David Divens at&nbsp;<a href=\"http:\/\/www.ngdc.noaa.gov\/mgg\/sedthick\/sedthick.html\">NGDC<\/a>&nbsp;from a series of other studies .<br \/>\n<\/span><\/p>\n<p><span style=\"font-family: Arial, Helvetica, sans-serif\">The depth to any isotherm is calculated by a simple linear extrapolation of the near-surface thermal gradient. If the calculated depth occurs above the depth of acoustic basement, then the area is shaded to indicate the depth at which the isotherm occurs in the sediments. &nbsp;If the depth to acoustic basement is reached before the temperature of the isotherm, then the isotherm does not occur in the sediments at that location, and the location is left unshaded on the isotherm map.<\/span><\/p>\n<p>For the maps below, white shading indicates areas where the isotherm does not occur within the sediments, but within the basement rock. These maps are based on the data and limitations discussed in <a href=\"http:\/\/deschutes.gso.uri.edu\/subsurface\/sedimentisotherms.htm\">Sediment Isotherms.<\/a><\/p>\n<h2>30 Degree Celsius<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-half_column wp-image-180408\" src=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso30map2-500x397.gif\" alt=\"\" width=\"500\" height=\"397\" srcset=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso30map2-500x397.gif 500w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso30map2-300x238.gif 300w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso30map2-364x289.gif 364w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>60 Degree Celsius<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-half_column wp-image-180409\" src=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/60-500x349.gif\" alt=\"\" width=\"500\" height=\"349\" srcset=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/60-500x349.gif 500w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/60-300x209.gif 300w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/60-768x536.gif 768w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/60-364x254.gif 364w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>90 Degree Celsius<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-half_column wp-image-180410\" src=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso90map2-500x353.gif\" alt=\"\" width=\"500\" height=\"353\" srcset=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso90map2-500x353.gif 500w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso90map2-300x212.gif 300w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso90map2-100x72.gif 100w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso90map2-768x542.gif 768w, https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso90map2-364x257.gif 364w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>120 Degree Celsius<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-half_column wp-image-180411\" src=\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/iso120map2-500x349.gif\" alt=\"\" width=\"500\" height=\"349\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The depth to sediment isotherms presented in this web site are based on two data sets. The first is the thermal data compiled by Pollack et al., 1993. Their data coverage is shown below: The second data set is the depth to basement. More precisely defined as depth to acoustic basement. &nbsp;This data set was [&hellip;]<\/p>\n","protected":false},"author":4762,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1],"tags":[],"class_list":["post-180406","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/posts\/180406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/users\/4762"}],"replies":[{"embeddable":true,"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/comments?post=180406"}],"version-history":[{"count":1,"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/posts\/180406\/revisions"}],"predecessor-version":[{"id":180412,"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/posts\/180406\/revisions\/180412"}],"wp:attachment":[{"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/media?parent=180406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/categories?post=180406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/web.uri.edu\/gso\/wp-json\/wp\/v2\/tags?post=180406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}