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Rainbow Valley (Chile)
Rainbow Valley () is a dry ravine in the Cordillera Domeyko mountain range known for its variety of rock colors and dramatic rock shapes. It is 90 kilometers north of San Pedro de Atacama and just north of the Yerbas Buenas Petroglyphs. It is more than three kilometers above sea level. Geology Rainbow Valley is a ravine that empties into the Salado River (Antofagasta), Salado River. The rocks of the valley walls feature distinct contrasts in color. At the bottom are layers of iron-rich red ochre clay deposited by the eruption of the volcanoes that formed the Chilean Coast Range. On top of that are layers of rock salt, gypsum, and calcite deposited by the Salar de Atacama. Emerging between them are rises of rocks formed from cooled magma that contain iron and magnesium that bonded with other elements and became green through Redox, oxidation. Other minerals like cobalt and lamprophyre give the valley other unusual colors like yellow, blue, pink, and purple. Millions of years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ResearchGate
ResearchGate is a European commercial social networking site for scientists and researchers to share papers, ask and answer questions, and find collaborators. According to a 2014 study by ''Nature'' and a 2016 article in ''Times Higher Education'', it is the largest academic social network in terms of active users, although other services have more registered users, and a 2015–2016 survey suggests that almost as many academics have Google Scholar profiles. While reading articles does not require registration, people who wish to become site members need to have an email address at a recognized institution or to be manually confirmed as a published researcher in order to sign up for an account. Articles are free to read by visitors, however additional features (such as job postings or advertisements) are accessible only as a paid subscription. Members of the site each have a user profile and can upload research output including papers, data, chapters, negative results, patents, r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |