Made available in DSpace on 2015-03-13T17:08:10Z (GMT). No. of bitstreams: 1 ArmandoBA_capa_ate_secao4.pdf: 2383600 bytes, checksum: 836bd7af04d38167d27d6747f1b94787 (MD5) Previous issue date: 2006-03-30 / The study area islocated in the northern cost of Rio Grande do Norte State, preciselyin a west zone of Apodi-Mossor? River, inclunding Tibau City, Grossos City and part of Mossor? City. Geologicaly, this area is composed by rokcs of Potiguar basin, represented by Cretaceous, Tertiary and Quaternary sediments. This area is characterizer by the intense action of cosatal processes (eolic and costal tranports, generalized erosion, alteration in the sediments balance and coast modification), reponsable for it?s morfological instability, also the antropic interference, where the iol industry is located, next Mossor? City, and also the salt exploration industry and the tendency of expantion of shrimp cultivation. This report had as objective the multitemporalgeoenvorimentalmonitoring of the region by recognizingin the field and analizingimages of orbital sensors of diferents years of last four decades. This analisys was achieved by Digital Images Procesing (DIP) thecnics, com subsidized, in a GIS, the preparion of Thematic Maps of natural resources (Geology, Geomorphology and Use & Ocupatios of Earth) and the Envorimental Sensivity to Oil Spilling, main objective os this project. Such technics constitute important tools of envoriment monitoring and maneging, indicating tendencies of antropic of natural growing, making possible the apropiated planning of development of the region, where the steps can be indicated minimized possibles envorimental impacts caused by antropics interferencies on the region, mainly those related to industrial activities, and oil industry above all. Researchs of this nature are very important to the analisys and ordered manegements of use and ocupation of coastal places / A ?rea estudada encontra-selocalizada na por??o costeira do litoral setentrional do estado do Rio Grande do Norte, mais precisamente numa zona ? oeste do Rio Apodi-Mossor?, englobando os Munic?pios de Tibau, Grossos e parte de Munic?pio de Mossor?. Geologicamente esta ?rea ? constitu?da por litotipos da Bacia Potiguar, representados por sedimentos cret?ceos, terci?rios e quatern?rios. ? caracterizada pela intensa a??o de processos costeiros (transporte litor?neo e e?lico, eros?o generalizada, altera??es no balan?o de sedimentos e modifica??es na linha de costa) respons?veis por sua instabilidade morfol?gica, al?m da interfer?ncia antr?pica, destacando-se a presen?a da ind?stria petrol?fera nas proximidades da Cidade de Mossor?. Pode-se ainda citar a explora??o salineira e a forte tend?ncia de expans?o da carcinicultura. Este trabalho objetivou o monitoramento geoambiental mutitemporal da regi?o por meio do reconhecimento de fei??es de campo e da an?lise de imagens de sensores orbitais de diferentes datas das ultimas quatro d?cadas. Esta an?lise se deu atrav?s de t?cnicas de Processamento Digital de Imagens, as quais subsidiaram, em um SIG, a elabora??o de Mapas Tem?ticos dos recursos naturais (Geologia, Geomorfologia e Uso e Ocupa??o do Solo) e de Sensibilidade Ambiental ao Derramamento do ?leo, principal objetivo deste trabalho. Tais t?cnicas constituem importantes ferramentas ao monitoramento e gerenciamento ambiental, denotando tend?ncias de crescimento antr?pico e natural, possibilitando o planejamento adequado para o desenvolvimento da regi?o, onde medidas poder?o ser apontadas para minimizar poss?veis impactos ambientais causados por interfer?ncias antr?picas na regi?o, principalmente ?quelas relacionadas ?s atividades industriais, sobretudo relacionadas ? industria do petr?leo. Estudos dessa natureza s?o de vital import?ncia na an?lise e gerenciamento ordenado do uso e ocupa??o dos terrenos costeiros

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-26T23:58:51Z No. of bitstreams: 1 BeneditaCleideDeSouzaCampos_DISSERT.pdf: 4403566 bytes, checksum: c3c751a75b003cb890a6499c81c7642f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-31T22:03:44Z (GMT) No. of bitstreams: 1 BeneditaCleideDeSouzaCampos_DISSERT.pdf: 4403566 bytes, checksum: c3c751a75b003cb890a6499c81c7642f (MD5) / Made available in DSpace on 2016-08-31T22:03:44Z (GMT). No. of bitstreams: 1 BeneditaCleideDeSouzaCampos_DISSERT.pdf: 4403566 bytes, checksum: c3c751a75b003cb890a6499c81c7642f (MD5) Previous issue date: 2016-02-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A qu?mica mineral de granitos, juntamente com revis?o de dados qu?micos de rocha total e petrografia foram utilizados para determinar as condi??es de cristaliza??o e as implica??es na g?nese de granitos C?lcio-alcalinos de alto K Porfir?ticos. Seis corpos gran?ticos foram analisados: Monte das Gameleiras, Barcelona, Acari, Cara?bas, Tour?o e Catol? do Rocha, localizados nos dom?nios Rio Piranhas-Serid? e S?o Jos? de Campestre, NE do Brasil. Os pl?tons s?o representados por monzogranitos, texturalmente possuem f?cies porfir?tica compreendendo fenocristais de K-feldspato com tamanhos entre 5 a 15 cm. K-feldspato, plagiocl?sio e quartzo constituem a parag?nese f?lsica e dominante; enquanto biotita e anfib?lio representam os minerais m?ficos principais; titanita, minerais opacos, allanita, ep?doto, apatita e zirc?o s?o os principais acess?rios. Em rela??o ao ?ndice de Shand o granito Monte das Gameleiras mostra-se mais metaluminoso, enquanto os outros seguem a transi??o metaluminoso a peraluminoso. Em diagramas discriminantes qu?micos estes se apresentam com car?ter transicional (subalcalino). As an?lises de petrografia e qu?mica n?o exp?e as diferen?as dos granitos, por?m os resultados de qu?mica mineral revelam as diferen?as dos mesmos e podem ser divididos em dois grupos: a leste (Monte das Gameleiras, Barcelona e Acari) e a oeste (Cara?bas, Tour?o e Catol? do Rocha). As raz?es Fe/(Fe+Mg) da biotita mostra um aumentam do grupo leste para oeste com valores de 0,48 a 0,64 e 0,66 a 0,92 respectivamente. As raz?es Mg/(Mg+Fe2) do anfib?lio diminui nesse sentido com valores de 0,40 a 0,57 e 0,06 a 0,31. As condi??es de cristaliza??es para os granitos a leste (Monte das Gameleiras, Barcelona e Acari) mostram press?o entre 4.2 kbar a 5.8 kbar, com profundidades que variam de 15,9 km a 20,5 km a uma temperatura entre 710 ?C a 734?C e a oeste (Cara?bas, Tour?o e Catol? do Rocha) com press?es de 5,4 kbar a 7,1 kbar e profundidades que variam de 20 km a 23 km a uma temperatura entre 729 ?C - 753 ?C. Ambas as ?reas, tanto leste como oeste foram gerados a partir de magmas oxidados. As profundidades das intrus?es gran?ticas podem estar relacionadas aos deslocamentos de falhas e ao alto conte?do de ?gua e vol?teis que permitem que o magma de alguns plutons atinja n?veis mais rasos em rela??o aos outros. Os resultados mostram um aumento sistem?tico de temperatura e press?o de cristaliza??o dos pl?tons de leste para oeste sugerindo um espessamento crustal nessa dire??o nos dois dom?nios geol?gicos pesquisados. / The mineral chemistry from granites, chemical of whole rock and review of petrography were used to determine the crystallization conditions and the implications in the genesis of high-K calc-akaline granites that are porphyritics, localizated in the Rio Piranhas-Serid? (RPSD) and S?o Jos? de Campestre Domains (SJCD). Six granitic bodies were analyzed and that for the intrusive granites within the SJCD were named East granites: Monte das Gameleiras, Barcelona. The Acari granite intrudes the area RPSD, however, was called as granite east due to the characteristics of mineral chemistry is similar to east granites. Granites Cara?bas, Tour?o and Catol? do Rocha are intrusive in the RPSD and called west granites. The six bodies are located in the northeast of the Borborema Province, NE Brazil. The plutons are represented by monzogranites wich have porphyritic facies with phenocrysts of K-feldspar with sizes between 5 and 15 cm. The K-feldspar, plagioclase and quartz are the dominant paragenesis; while the biotite and amphibole are the main mafic minerals; and titanite, opaque minerals, allanite, epidote, apatite and zircon are the accessories minerals. The Monte das Gameleiras granite shows metaluminous aluminium saturation index, whereas the others plutons metaluminous to peraluminous. In geochemical diagrams, the granites present with transitional character (subalcalino). The petrographic and geochemical analysis didn't show the differences between the plutons, but according to the mineral chemistry they can be divided into two groups: Monte das Gameleiras, Barcelona and Acari (east) and Cara?bas, Tour?o e Catol? do Rocha (west). The Fe/(Fe + Mg) ratio of biotite shows an increase from east to west group with values from 0.45 to 0.64 and 0.66 to 0.92 respectively, and the Mg / (Mg + Fe2) of amphibole decreases with values from 0.40 to 0.57 and from 0.07 to 0.31. The crystallization parameters of east granites, The crystallization conditions for granites east (Monte das Gameleiras, Barcelona and Acari) show pressure between 3.8 kbar to 5.5 kbar, with depths ranging from 14 km to 21 km at a temperature between 701 ? C to 742?C and west (Cara?bas, Tour?o and Catol? Rock) with pressures to 4.8 kbar to 6.2 kbar and depths ranging from 18 km to 23 km at a temperature between 723 ? C - 776 ? C. Both areas, east and west were generated from magmas oxidized with ?FQM values (-1 a +2.0). The depths of granite intrusion failures may be related to offsets and high water content and volatile that allow the magma some plutons reaches shallower levels in relation to the other. The results show a systematic increase in temperature and crystallization pressure east of plutons west suggesting crustal thickening in that direction. The results show a systematic increase in temperature and crystallization pressure east to west plutons, suggesting crustal thickening in that direction in the two domains studied.