The Cretaceous-Tertiary boundary is well exposed on the beach of Bidart (4km south of Biarritz). A 20cm thick Iridium rich level of black shales separates the grey Maestrichian limestone (on the bottom) and the white Danian limestones (on the top). The K-T transition seems to be continuous. PhotoID309<\/p>\n
Photograph: c.nicollet<\/p>\n
Reference: http:\/\/christian.nicollet.free.fr\/page\/limiteK-T\/KT.html<\/p>\n","color":"#81d742","icon":"wm-icon-cave-15","noDetails":false,"noInteraction":false,"image":"http:\/\/outcropedia.be.webmapp.it\/wp-content\/uploads\/2018\/06\/The-KT-boundary-in-the-Basque-coast-768x576.jpg","taxonomy":{"webmapp_category":[219]},"accessibility":{"mobility":{"check":false,"description":""},"hearing":{"check":false,"description":""},"vision":{"check":false,"description":""},"cognitive":{"check":false,"description":""},"food":{"check":false,"description":""}},"source":"http:\/\/outcropedia.be.webmapp.it\/wp-json\/wp\/v2\/poi\/1496","web":"http:\/\/outcropedia.be.webmapp.it\/poi\/the-k-t-boundary-in-the-basque-coast\/","addr:street":"","addr:housenumber":"","addr:postcode":"","addr:city":"","contact:phone":"","contact:email":"","opening_hours":"","capacity":"","related":{"poi":{"neighbors":[],"related":[]}}},"geometry":{"type":"Point","coordinates":[-1.58585071564,43.450247382932425]}}