{"id":788,"date":"2014-02-19T17:22:27","date_gmt":"2014-02-19T17:22:27","guid":{"rendered":"http:\/\/blog.soton.ac.uk\/ggblog\/?p=788"},"modified":"2014-02-20T11:43:47","modified_gmt":"2014-02-20T11:43:47","slug":"sediment-storage-and-reworking-on-the-shelf-and-in-the-canyon-of-the-indus-river-fan-system-since-the-last-glacial-maximum","status":"publish","type":"post","link":"https:\/\/blog.soton.ac.uk\/ggblog\/2014\/02\/sediment-storage-and-reworking-on-the-shelf-and-in-the-canyon-of-the-indus-river-fan-system-since-the-last-glacial-maximum\/","title":{"rendered":"Sediment storage and reworking on the shelf and in the Canyon of the Indus River-Fan System since the last glacial maximum"},"content":{"rendered":"<p>We might hope that the deep-water sedimentary record reflects processes\u00a0on land in the region where the sediments are sourced, giving us insight into\u00a0a combination of tectonic activity and climatic changes. A study looking at the\u00a0Indus Shelf and Canyon offshore Pakistan led by <a href=\"http:\/\/geology.lsu.edu\/People\/Faculty\/item41721.html\">Peter Clift<\/a> and including <a href=\"http:\/\/www.southampton.ac.uk\/oes\/research\/staff\/then.page\">Tim Henstock<\/a>\u00a0from G&amp;G suggests this isn&#8217;t the case, even though\u00a0at different stages in the glacial cycle we expect very different sources and volumes\u00a0of sediments.<\/p>\n<p>We found significant storage and re-working of sediments over periods much longer\u00a0than 10000 years (the time of the last sea level low)\u00a0 in large clinoforms on the\u00a0shelf and in the upper section of the canyon before there is transport further\u00a0down the canyon to the deep sea. Although the top of the canyon has accumulated\u00a0recent sediment at a rate of 1m every 10 years, with sandy layers that may represent\u00a0the product of annual monsoon floods, the last similar material reached the mid canyon\u00a0around 7000 years ago. The mid canyon itself has a number of terraces with\u00a0near-seabed sediments dated as long ago as 49000 years, suggesting that the\u00a0canyon itself may also act as a region where sediments are alternately stored and\u00a0then reworked before they are transported out into the deep Arabian Sea. This\u00a0buffering means that there is no simple relationship between the onshore processes\u00a0of erosion and the offshore deposition of sediments.<\/p>\n<p>The study was funded by the NERC and was published in <a href=\"http:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/bre.12041\/abstract\">Basin Research<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We might hope that the deep-water sedimentary record reflects processes\u00a0on land in the region where the sediments are sourced, giving us insight into\u00a0a combination of tectonic activity and climatic changes. A study looking at the\u00a0Indus Shelf and Canyon offshore Pakistan led by Peter Clift and including Tim Henstock\u00a0from G&amp;G suggests this isn&#8217;t the case, even&hellip; <a class=\"more-link\" href=\"https:\/\/blog.soton.ac.uk\/ggblog\/2014\/02\/sediment-storage-and-reworking-on-the-shelf-and-in-the-canyon-of-the-indus-river-fan-system-since-the-last-glacial-maximum\/\">Read More <span class=\"screen-reader-text\">Sediment storage and reworking on the shelf and in the Canyon of the Indus River-Fan System since the last glacial maximum<\/span><\/a><\/p>\n","protected":false},"author":93323,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[493988,4217,517518,328889],"tags":[494077,69622,430884,494078],"class_list":["post-788","post","type-post","status-publish","format-standard","hentry","category-blog-roll","category-news","category-publications","category-research-projects","tag-canyon","tag-geophysics","tag-pakistan","tag-sediment-dynamics"],"_links":{"self":[{"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/posts\/788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/users\/93323"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/comments?post=788"}],"version-history":[{"count":2,"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/posts\/788\/revisions"}],"predecessor-version":[{"id":790,"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/posts\/788\/revisions\/790"}],"wp:attachment":[{"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/media?parent=788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/categories?post=788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/ggblog\/wp-json\/wp\/v2\/tags?post=788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}