Adriana Alves in research grants and scholarships supported by FAPESP.
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Recent studies in granite petrogenesis are strongly influenced by the finding that mafic microgranular enclaves (mme) witness frequent and volumetrically significant contribution of mantle-derived magmas to the origin and evolution of granitic melts, be it as a heat source or as a source compositional diversity. On the other hand, the origin of felsic microgranular enclaves (fme) is still…
The Paraná-Etendeka LIP is one of the biggest magmatic episodes recorded on the Earth, with a volume of at least 1.7 x 10^6 km^3 that spreads throughout areas of Brazil, Argentina, Uruguay, and Paraguay in South America (Paraná Magmatic Province - PMP), and Namibia and Angola in Africa (Etendeka Province). It is linked with the Gondwana breakup and comprises Lower Cretaceous rocks, which …
The Paraná-Etendeka Magmatic Province (PEMP), aim of this study, has the largest preserved volume of silicic lavas among the continental LIPs on the planet. Divided into two groups according to Ti content, there are the silicic lavas of the Palmas type (low-Ti) and those of the Chapecó type (high-Ti). The eruptive style of the PEMP silicic lavas is the scene of discussions and controversi…
It is widely thought that major volcanic events can play a key role in triggering biotic crises by introducing climate change volatiles, such as carbon dioxide and sulfur, into the atmosphere. Indeed, several mass extinction events coincide with the emplacement of large igneous provinces (LIPs), but not all LIPs are correlated with an extinction. It has been suggested that LIPs with highe…
The project aims at the compositional characterization, via microprobe and laser, of the melt inclusions found in plagioclase and pyroxene crystals by the Paraná-Etendenka Province. This part is important to distinguish the melt inclusions from possible embayments, that would not be possible if in the high temperature homogenization process (more traditional technique of analysis of melt …
The present project aims at the compositional characterization, via electronic probe and laser, of melt inclusions found in plagioclase and pyroxene crystals of the Paraná-Etendenka Province. This step is important to differentiate melt inclusions from possible embayments, which would not be possible if in the process of high-temperature homogenization (more traditional melt inclusion ana…
(Only some records are available in English at this moment)
A temporal coincidence between Continental Flood Basalts (CFB) emplacement and global environmental changes suggests that volcanic emissions can have an important effect on atmospheric composition. It is highly probable that magmatic degassing is an insufficient killer mechanism, and an important additional volatile flux should be provided by an alternative source as outgassing through co…
It is widely thought that major volcanic events can play a key role in triggering biotic crises by introducing climate change volatiles, such as carbon dioxide and sulfur, into the atmosphere. Indeed, several mass extinction events coincide with the emplacement of large igneous provinces(LIPs), but not all LIPs are correlated with an extinction. It has been suggested that LIPs with higher…
| 2 / 2 | Completed research grants |
| 2 / 2 | Ongoing scholarships in Brazil |
| 10 / 8 | Completed scholarships in Brazil |
| 2 / 2 | Completed scholarships abroad |
| 16 / 14 | All research grants and scholarships |
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