Análise multivariada de dados aerogamaespectrométricos, aeromagnéticos e sensoriamento remoto como auxiliar na prospecção de minerais metálicos na região da Bacia do Camaquã-RS

Santos, R. Felix dos

doi:10.11606/d.44.2014.tde-25092014-092813

Cited by 2 publications

(2 citation statements)

References 14 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bleeding methods were compared using the Mann-Whitney U test and extraction times with the Kruskal-Wallis and Dunn tests. Moreover, in order to identify plant variables that contributed most to J. curcas L. latex production, multiple regression analysis was used to select the best model for the stepwise procedure, applying the information criterion proposed by Akaike (Hair et al 2009). Statistical analyses were performed in the R program version 3.2 (R Development Core Team 2015).…”

Section: Discussionmentioning

confidence: 99%

Factors that influence in Jatropha curcas L. latex production

et al. 2017

View full text Add to dashboard Cite

ABSTRACT:Latex from Jatropha curcas L. exhibits biotechnological potential for the development of biodiesel and drugs. Little is known about the collection methods and latex productivity of this species.In order to garner information on the use of J. curcas latex, factors that influence production by this species were assessed. As a result, no significant difference was found between the volume of latex production. Multiple regression analysis demonstrated that latex production is positively associated with plant height and negatively associated with fruit production and other variables that maximize it. During the fruiting process the plant uses most of the assimilates for fruit development and a lower percentage to produce secondary compounds, resulting in less availability of these metabolites for latex production. In general, the latex production obtained from this species is low and limits commercial exploitation of this compound, despite its possible pharmacological potential.

show abstract

Section: Discussionmentioning

confidence: 99%

Factors that influence in Jatropha curcas L. latex production

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Esta propriedade das rochas depende de seus minerais constituintes e as suas características são proporcionais à quantidade e o modo de distribuição desses minerais na rocha como um todo. Em prospecção mineral, os minerais que possuem susceptibilidade magnética suficientemente forte para produzirem anomalias detectáveis e que mais contribuem para as características magnéticas das rochas são a magnetita, pirrotita e ilmenita, as quais, na maioria das vezes, estão presentes como minerais acessórios na maioria das rochas, principalmente nas rochas ígneas (Santos, 2014).…”

Section: Magnetização Induzidaunclassified

Caracterização magnetomérica do Kimberlito Janjão, Domo de Lages, Santa Catarina

Coelho¹

View full text Add to dashboard Cite

This work presents a review of the ground magnetometry technique, with detailed information regarding its planning, acquisition and data processing. The technique was applied in an area of 0.7 km 2 in the Planalto Catarinense, in the Dome of Lages. The Dome of Lages differs from the other domes of the Paraná Basin by the presence of alkaline rocks with an age of approximately 75 Ma. These rocks, in the 70s and 80s of the last century, were the subject of investigations mainly mineralogical and petrological. The detailed magnetic survey presented in this work had the goal of inferring the geometry of a kimberlite body, named "Janjão"(in homage to its discoverer). Geophysical work, previously performed in this region, had low resolution and low representativity of the study area. This work allowed to generate an anomalous magnetic field map that presented two dipole anomalies. These anomalies presented reverse bias to those expected for induced anomalies in the latitude and inclination of the magnetic field of the survey region, indicating strong remanent magnetization in the rocks studied. The Analytical Signal Amplitude technique provided information about the lateral limits of the magnetic bodies that generate the anomalies. An estimation of the depth of the top of these bodies was also made from the Half-Width technique and the 3D Euler Deconvolution. The results obtained between the two techniques were compatible. The information obtained through the processing of the magnetic data served as a basis to evaluate the model generated by the Inversion of the Magnetization Vector. The inversion presented a model of magnetic susceptibility distribution in subsurface and two sub verticalized magnetic bodies, with magnetization vector opposite the main direction of the geomagnetic field, associated to the positions of the kimberlite body. The values of magnetic susceptibility ranged from 8 to 20 × 10 −3 (SI). For the susceptibility of 8 × 10 −3 (SI), the magnetic bodies relating to the two anomalies are connected to each other at depths of approximately 180 meters. The magnetization vector indicated weak magnetic susceptibility and magnetization primarily induced in regions where it is estimated the presence of sedimentary rocks nesting to Janjão diatreme, whose physical characteristics are compatible with those suggested by the inversion model. Finally, with the hypothesis of reverse magnetic field at the time of diatreme formation and with the estimated ages for these kimberlite rocks, it was possible to reduce the age uncertainty of the Janjão diatreme formation. For future work, was mentioned the location of 16 other kimberlite occurrences in the dome region and also proposed the use of gravimetry and electromagnetic techniques that may help in the identification and characterization of these occurrences, and thus, contribute to the knowledge about the Lages Kimberly Province in Santa Catarina.

show abstract

Análise multivariada de dados aerogamaespectrométricos, aeromagnéticos e sensoriamento remoto como auxiliar na prospecção de minerais metálicos na região da Bacia do Camaquã-RS

Abstract: SANTOS, R. P. Z. Multivariate analysis applied to airborne geophysical and remote sensing data as auxiliary tools in the metalic minerals prospection in the Camaquã Basin-RS, Brazil. 2014, 93 f.

Cited by 2 publications

References 14 publications

Factors that influence in Jatropha curcas L. latex production

Factors that influence in Jatropha curcas L. latex production

Caracterização magnetomérica do Kimberlito Janjão, Domo de Lages, Santa Catarina

Contact Info

Product

Resources

About