{"id":3296,"date":"2008-02-27T10:05:52","date_gmt":"2008-02-27T10:05:52","guid":{"rendered":"http:\/\/all-geo.org\/highlyallochthonous\/2008\/02\/mildy-shook-up\/"},"modified":"2008-02-27T10:05:52","modified_gmt":"2008-02-27T10:05:52","slug":"mildy-shook-up","status":"publish","type":"post","link":"https:\/\/all-geo.org\/highlyallochthonous\/2008\/02\/mildy-shook-up\/","title":{"rendered":"Mildy shook up"},"content":{"rendered":"<p>Trust me to be out of the UK when something tectonically interesting actually happens: <a href=http:\/\/news.bbc.co.uk\/1\/hi\/england\/7266136.stm>a magnitude 5.2 earthquake sent the eastern Midlands trembling<\/a> early this morning. <a href=http:\/\/www.bgs.ac.uk\/news\/Market_Rasen_Feb_27_2008_web.pdf>The BGS press release<\/a> (pdf) has some pretty seismograms but nothing really resembling useful information. The epicentre (red balloon) was just to the north of Market Rasen, in Lincolnshire.<\/p>\n<p style=\"text-align: center;\"><iframe loading=\"lazy\" width=\"425\" height=\"350\" frameborder=\"0\" scrolling=\"no\" marginheight=\"0\" marginwidth=\"0\" src=\"http:\/\/maps.google.com\/maps\/ms?ie=UTF8&amp;hl=en&amp;msa=0&amp;ll=53.421221,-0.350018&amp;spn=0.17145,0.466919&amp;t=p&amp;msid=117374869064248039494.00044724ae122da1b648d&amp;output=embed&amp;s=AARTsJpZMtIVPQEUvgfQYzCT6is_3mUc5A\"><\/iframe><br \/><small><a href=\"http:\/\/maps.google.com\/maps\/ms?ie=UTF8&amp;hl=en&amp;msa=0&amp;ll=53.421221,-0.350018&amp;spn=0.17145,0.466919&amp;t=p&amp;msid=117374869064248039494.00044724ae122da1b648d&amp;source=embed\" style=\"color:#0000FF;text-align:left\">View Larger Map<\/a><\/small><\/p>\n<p>Earthquakes powerful enough to shake anything more than seismometer needles are quite rare in Britain, and are mostly related to the collapse of old mine workings. Lincolnshire is on the wrong side of the country for the coal-fields, but it seems that there are Jurassic ironstone horizons in this part of the world, and there are some old mine workings at Claxby (blue balloon &#8211; some very sparse information buried <a href=http:\/\/www.dmm-gallery.org.uk\/minequar\/4406-02.htm>here<\/a> and <a href=http:\/\/www.english-nature.org.uk\/special\/geological\/sites\/area_ID22.asp>here<\/a>). It&#8217;s possible that a collapse in some of the deeper shafts could be the cause of the earthquake &#8211; but this is really just a guess, and the cause could be completely different.<br \/>\n<b>Update<\/b>: I&#8217;d be interested to here if British readers slept through it like <a href=http:\/\/www.ethicalpalaeontologist.com\/2008_02_01_archive.htm#1889219317436623817>Julia<\/a>, or were shaken awake like <a href=http:\/\/hypocentre.wordpress.com\/2008\/02\/27\/market-rasen-earthquake\/>hypocentre<\/a>.<br \/>\n<b>Updated update<\/b>: From <a href=http:\/\/www.emsc-csem.org\/Images\/MT\/GGQU7.jpg>the look of this moment tensor solution<\/a> it looks like hypocentre called it right in the comments . Although <a href=http:\/\/network.nature.com\/blogs\/user\/boboh\/2008\/02\/27\/nietzsche-was-wrong>Bob is going for the more traditional explanation<\/a>&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An earthquake in the UK? What&#8217;s that about?<br \/>\n <a href=\"https:\/\/all-geo.org\/highlyallochthonous\/2008\/02\/mildy-shook-up\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,5,4],"tags":[],"class_list":["post-3296","post","type-post","status-publish","format-standard","hentry","category-earthquakes","category-geohazards","category-geology"],"_links":{"self":[{"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/posts\/3296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/comments?post=3296"}],"version-history":[{"count":0,"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/posts\/3296\/revisions"}],"wp:attachment":[{"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/media?parent=3296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/categories?post=3296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/all-geo.org\/highlyallochthonous\/wp-json\/wp\/v2\/tags?post=3296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}