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Uso da termocronologia por traços de fissão em apatita no reconhecimento de áreas de recarga e análises isotópicas de 234U/238U em águas subterrâneas do aquífero Itararé no município de Americana (SP)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Fracalossi, Carlos Pinto |
| Copyright Year | 2007 |
| Abstract | For this research were done thermochronological and hydrochemical studies close to Limeira and Americana cities, central region of São Paulo State. Using the U-isotopes analysis in groundwater from Itararé aquifer was identified a larger quantity of U from higher to lower topographic areas, which means that the U/U activity rate got higher from recharge areas. The application of apatites fission-track analysis registered, through thermal histories, the total resetting of the fission-tracks from 118 Ma for the sample TF-856 and 97 Ma for the sample TF-858. These ages register the first uplift time of this area which caused the origin of the paleo-recharge areas. Between Upper Cretaceous and Paleocene a heating period was registered and afterwards, from Eocene to the present time, is evidenced that the area gets a new uplift phase. This work suggests the use of fission-tracks analysis for the recognition of structural height and its consequence to the paleo-recharge areas. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://repositorio.unesp.br/bitstream/handle/11449/92879/fracalossi_cp_me_rcla.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
