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Ilhéu da Cal, Porto Santo, Porto Santo Island, Madeira, Portugali
| Regional Level Types | |
|---|---|
| Ilhéu da Cal | Islet |
| Porto Santo | Municipality |
| Porto Santo Island | Island |
| Madeira | Autonomous Region |
| Portugal | Country |
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Type:
Other Languages:
French:
Îlot de Cal, Porto Santo, Madère, Portugal
German:
Ilhéu da Cal, Porto Santo, Autonome Region Madeira, Portugal
Russian:
Кал, Порту-Санту , Мадейра, Португалия
Spanish:
Islote de Cal, Porto Santo, Madeira, Portugal
Aragonese:
Isleta da Cal, Porto Santo, Madeira
Cebuano:
Ilhéu de Baixo, Porto Santo, Ilha de Porto Santo, Madeira
Dutch:
Cal Islet, Porto Santo, Madeira, Portugal
Finnish:
Ilhéu da Cal, Madeira, Portugali
Japanese:
カル島, マデイラ諸島, ポルトガル
Portuguese:
Ilhéu da Cal, Porto Santo, Porto Santo, Madeira, Portugal
The Ilhéu da Cal (or Ilhéu de Baixo) is a Portuguese islet Southwest of the island of Porto Santo, Madeira. These are apart from each other for less than 400 meters.
Inactive lime mines (lime, in Portuguese means "cal").
In Ilhéu da Cal, also known as Ilhéu de Baixo, it is possible to observe hyaloclastites, layers of carbonated pararecifal deposits and conglomerates, submarine basaltic flows and basaltic tuffs from the middle Miocene. The top of this islet is covered by Quaternary aeolianitic deposits. Like the other islets, it was once connected to the main island and its individualization resulted from erosive processes that occurred after the last glaciation and the deposition of the aeolianitic formation during the Holocene, less than 10-12 thousand years ago. Several galleries were drilled in the calcareous deposits that formed two continuous layers throughout the islet. This material was used in the lime manufacturing industry, an activity that was extremely important to the local economy. These deposits correspond to carbonated sedimentary marine deposits and fossilized coral reefs, with 15.2 My (middle Miocene), that formed on the top of the volcanic edifice during Porto Santo’s pre-emergence phase.
No Ilhéu de Baixo ou da Cal ocorrem, essencialmente, hialoclastitos, níveis de depósitos carbonatados pararecifais e conglomerados, e ainda escoadas submarinas de basalto e tufo basáltico do Miocénico Médio. O topo do ilhéu encontra-se recoberto por depósitos eolianíticos do Quaternário.
À semelhança dos outros ilhéus, esteve outrora ligado à ilha principal, e, por ação de fenómenos erosivos, a sua individualização ocorreu depois da Última Glaciação e deposição da Formação Eolianítica, durante o Holocénico, há menos de 10-12 mil anos. Várias galerias foram escavadas no material calcário que surge em dois níveis contínuos ao longo do ilhéu. Este material que serviu a indústria de produção de cal, atividade que teve um papel económico extremamente importante no Arquipélago, corresponde a sedimentos marinhos carbonatados e recifes de corais fossilizados, com 15,2 Ma (Miocénico Médio), e que se formaram no topo do edifício vulcânico, durante a fase de pré-emersão da ilha.
In: geodiversidade.madeira.gov.pt/geossitios/porto-santo
List of minerals for each chemical element
Fossils
There are 1 fossil locality from the PaleoBioDB database within this region.These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.
| Occurrences | 14 |
|---|---|
| Youngest Fossil Listed | 5.33 Ma (Miocene) |
| Oldest Fossil Listed | 11.6 Ma (Miocene) |
| Fossils from Region | Click here to show the list. |
| Fossil Localities | Click to show 1 fossil locality |
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Cal_Islet |
|---|---|
| Wikidata ID: | Q1658454 |
| GeoNames ID: | 2271220 |
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Ilhéu da Cal, Porto Santo, Porto Santo Island, Madeira, Portugal