{"id":414093,"date":"2021-11-09T18:17:38","date_gmt":"2021-11-09T21:17:38","guid":{"rendered":"https:\/\/revistapesquisa.fapesp.br\/?p=414093"},"modified":"2021-11-09T18:17:38","modified_gmt":"2021-11-09T21:17:38","slug":"marble-columns","status":"publish","type":"post","link":"https:\/\/revistapesquisa.fapesp.br\/en\/marble-columns\/","title":{"rendered":"Marble columns"},"content":{"rendered":"<p>As groundwater flows through the limestone substrate, it dissolves the rock in underground systems called karsts. This process, studied by geologist William Sallun Filho, creates caves with a diverse range of features. Vale do Ribeira, south of S\u00e3o Paulo, is home to many such caves. In Gruta Fria (Cold Grotto \u2013 <em>photograph<\/em>), pillars hanging from the ceiling\u2014known to experts as pendants\u2014show how the water flowed through a labyrinth of conduits, creating these structures that avoided erosion at the crossing points. The marble that this cave is made of does not dissolve easily.<\/p>\n<p><em>Image submitted by William Sallun Filho, a researcher at the S\u00e3o Paulo State Institute for Environmental Research<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"As groundwater flows through the limestone substrate, it dissolves the rock in underground systems called karsts","protected":false},"author":475,"featured_media":414094,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[164],"tags":[240],"coauthors":[785],"class_list":["post-414093","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-photolab","tag-geology"],"acf":[],"_links":{"self":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/414093","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/users\/475"}],"replies":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/comments?post=414093"}],"version-history":[{"count":1,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/414093\/revisions"}],"predecessor-version":[{"id":414102,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/414093\/revisions\/414102"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/media\/414094"}],"wp:attachment":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/media?parent=414093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/categories?post=414093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/tags?post=414093"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/coauthors?post=414093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}