Middle and Late Jurassic climatic, oceanographic and environmental trends along the Viking Corridor

Abstract

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Keywords: Late Jurassic; palaeoclimate; Greenland; carbon cycling; Viking Corridor; belemnite stable isotopes&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;The &amp;amp;#8220;polar amplification&amp;amp;#8221; effect, whereby the poles experience greater changes in temperature compared to the low latitudes for a given global average temperature change, makes high-latitude isotope records ideally suited to investigate fluctuations in palaeoclimate. The present study investigates palaeoclimatic and oceanographic changes along the Viking Corridor &amp;amp;#8211; the narrow seaway that connected the Tethys to the Arctic Boreal Realm during the Middle and Late Jurassic.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Stable-isotope data obtained from belemnites from East Greenland, originating from along the western margin of the Viking Corridor, show a M. Bathonian warming trend, which may indicate the reopening of the corridor after North Sea doming. We also discuss various controls on the carbon-isotope record that may dampen or amplify global signals. Changes in local depositional settings caused partial overprinting of the &amp;amp;#948;&amp;lt;sup&amp;gt;13&amp;lt;/sup&amp;gt;C record during the Late Jurassic VOICE event.&amp;lt;/p&amp;gt;</jats:p