{"id":4628,"date":"2024-10-04T08:20:24","date_gmt":"2024-10-04T06:20:24","guid":{"rendered":"https:\/\/mucbo.org\/ripple-marks-dondulacio\/"},"modified":"2024-10-04T08:20:24","modified_gmt":"2024-10-04T06:20:24","slug":"ripple-marks-dondulacio","status":"publish","type":"post","link":"https:\/\/mucbo.org\/es\/ripple-marks-dondulacio\/","title":{"rendered":"Ripple-marks d\u2019ondulaci\u00f3"},"content":{"rendered":"<p>PE\u00c7A DE L&#8217;OCTUBRE 2024: Ripple-marks d\u2019ondulaci\u00f3<\/p><p>Les&nbsp;<strong>onetes de sediment<\/strong>&nbsp;(<em>ripple-marks<\/em>, del seu nom en angl\u00e8s) s\u00f3n unes formes d\u2019origen inorg\u00e0nic generades per la interacci\u00f3 entre un fluid turbulent (aire o aigua) i un sediment (normalment arena o fang). Un exemple molt conegut s\u00f3n les que es troben a fons marins arenosos de poca fond\u00e0ria, per\u00f2 aquestes estructures tamb\u00e9 es poden formar a rius, basses, i, fins i tot, a deserts. Si el corrent del fluid \u00e9s unidireccional, llavors aquestes onetes prenen una forma asim\u00e8trica: la cara a favor del vent\/aigua \u00e9s m\u00e9s llarga que la de sotavent. En canvi, si es tracta d\u2019un corrent bidireccional, com les ones de la mar, el resultat \u00e9s una cresta amb els dos vessants sim\u00e8trics. Aquest \u00e9s el cas de la pe\u00e7a d\u2019aquest mes, uns&nbsp;<em>ripple-marks<\/em>&nbsp;d\u2019ondulaci\u00f3.&nbsp;<\/p><p>La pe\u00e7a d\u2019aquest mes prov\u00e9 del Tri\u00e0sic Mitj\u00e0, de la rodalia de la cala d\u2019Estellencs, i correspon a sediment que es va dipositar a la vorera d\u2019un antic riu. La seva forma indica que aquests&nbsp;<em>ripple-marks<\/em>&nbsp;d\u2019ondulaci\u00f3 s&#8217;originaren en basses poc profundes i d\u2019aig\u00fces tranquil\u00b7les; gr\u00e0cies a petites pertorbacions del vent a la superf\u00edcie de l\u2019aigua, es formaven d\u00e8bils turbul\u00e8ncies dins la bassa, el que acabaven generant aquestes estructures.&nbsp;<\/p><ul class=\"wp-block-list\"><li><strong><u>Proced\u00e8ncia:<\/u><\/strong>\u00a0Cala d\u2019Estellencs, Estellencs, Mallorca.\u00a0<\/li>\n\n<li><strong><u>Edat:<\/u><\/strong>\u00a0Tri\u00e0sic Mitj\u00e0 (fa uns 247 milions d\u2019anys).\u00a0<\/li><\/ul><p><\/p>","protected":false},"excerpt":{"rendered":"<p>PE\u00c7A DE L&#8217;OCTUBRE 2024: Ripple-marks d\u2019ondulaci\u00f3 Les&nbsp;onetes de sediment&nbsp;(ripple-marks, del seu nom en angl\u00e8s) s\u00f3n unes formes d\u2019origen inorg\u00e0nic generades per la interacci\u00f3 entre un fluid turbulent (aire o aigua) i un sediment (normalment arena o fang). Un exemple molt conegut s\u00f3n les que es troben a fons marins arenosos de poca fond\u00e0ria, per\u00f2 aquestes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4084,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[137],"tags":[],"class_list":["post-4628","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-piezas-y-plantas-del-mes"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ripple-marks d\u2019ondulaci\u00f3 - MUCBO<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mucbo.org\/es\/ripple-marks-dondulacio\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ripple-marks d\u2019ondulaci\u00f3 - MUCBO\" \/>\n<meta property=\"og:description\" content=\"PE\u00c7A DE L&#8217;OCTUBRE 2024: Ripple-marks d\u2019ondulaci\u00f3 Les&nbsp;onetes de sediment&nbsp;(ripple-marks, del seu nom en angl\u00e8s) s\u00f3n unes formes d\u2019origen inorg\u00e0nic generades per la interacci\u00f3 entre un fluid turbulent (aire o aigua) i un sediment (normalment arena o fang). 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