Zobrazeno 1 - 10
of 108
pro vyhledávání: '"VALDEREZ P. FERREIRA"'
Publikováno v:
Anuário do Instituto de Geociências, Vol 42, Iss 4, Pp 349-358 (2020)
This work focuses on the behavior of the C and O isotopes and major and trace element chemistry of the carbonate rocks of the Tambaba Formation, Paraíba Basin, Northeastern Brazil. Thirteen carbonate samples collected from three vertical profiles l
Externí odkaz:
https://doaj.org/article/0092384e0c5041b7842221c5c2516043
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 93, Iss suppl 4 (2021)
Abstract The Tamboril and Olho d’Água granitic stocks are part of the abundant calc-alkalic magmatic epidote-bearing granitic rocks in the Cachoeirinha–Salgueiro Terrane (CST) in the Transversal Zone Domain, northeastern Brazil. The equigranular
Externí odkaz:
https://doaj.org/article/b2a0211fd52b4c1c94734dc3e770a30d
Autor:
Natan S. Pereira, Alcídes N. Sial, Ruy K.P. Kikuchi, Valderez P. Ferreira, Clemens V. Ullmann, Robert Frei, Adriana M.C. Cunha
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 87, Iss 4, Pp 1939-1957 (2015)
ABSTRACT Coral skeletons contain records of past environmental conditions due to their long life span and well calibrated geochemical signatures. C and O isotope records of corals are especially interesting, because they can highlight multidecadal va
Externí odkaz:
https://doaj.org/article/d111d5863cac40d1b2e073e34f34c6c2
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 87, Iss 2, Pp 635-649 (2015)
We report for the first time the occurrence of organic-walled microfossils in Ediacaran limestones and marls of the Frecheirinha Formation, Ubajara Group, and the first Precambrian acritarchs so far reported for northeastern Brazil. The assemblage of
Externí odkaz:
https://doaj.org/article/100c3696c5134142b00a04758116fd18
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 77, Iss 4, Pp 729-743 (2005)
The Alto Quixaba pegmatite, Seridó region, northeastern Brazil, is a 60º/80ºSW-trending subvertical dike discordantly intruded into biotite schists of the Upper Neoproterozoic Seridó Formation. It has three distinct mineralogical and textural zon
Externí odkaz:
https://doaj.org/article/435508ff686245949016049c106928dd
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 77, Iss 1, Pp 137-155 (2005)
C-isotope and 87Sr/86Sr values for five carbonate successions from the São Caetano Complex, northeastern Brazil, were used to constrain their depositional age and to determine large variations in the C- and Sr-isotopic composition of seawater under
Externí odkaz:
https://doaj.org/article/444db9b4b929480c89c6209ccbe46025
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 74, Iss 3, Pp 553-554 (2002)
Externí odkaz:
https://doaj.org/article/f2cbe710334a45f2bffd6b903dadc9bd
Autor:
ALCIDES N. SIAL, VALDEREZ P. FERREIRA, MÁRCIO M. PIMENTEL, ALEJANDRO J. TOSELLI, FLORENCIO G. ACENOLAZA, RICARDO N. ALONSO, MIGUEL A. PARADA
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 73, Iss 3, Pp 471-471 (2001)
Externí odkaz:
https://doaj.org/article/5f118f1cedf54c2091b314531a451952
Autor:
Alcides N. Sial, Valderez P. Ferreira, Alejandro J. Toselli, Florencio G. Aceñolaza, Ricardo Alonso, Miguel A. Parada
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 72, Iss 4, Pp 603-603 (2000)
Externí odkaz:
https://doaj.org/article/13b6473d42de44168df1ce3ad52d5426
Autor:
Charles Henrique Fernandes Sales das Neves, Valderez Pinto Ferreira, Sergio Pacheco Neves, Paulo de Barros Correia
Publikováno v:
Geologia USP. Série Científica, Vol 19, Iss 3 (2019)
O método de anisotropia de susceptibilidade magnética (ASM) foi aplicado no plúton Serra da Caiçara, que faz parte do batólito Águas Belas-Canindé, Domínio Pernambuco-Alagoas, Província Borborema, Nordeste do Brasil. O plúton tem altos valo
Externí odkaz:
https://doaj.org/article/7cfd0b41f8a44dafb1487491ce3dfdf9