PORTAL DE REVISTAS DA USP

Logotipo USP

Vol. 21 (1990)

Published: 1990-01-01

Partition coefficient of Ca among leucite, sanidine, silicic-sanidinic melt, and hydrothermal solution at 2Kb and high temperatures (920º and 1030ºC)

A. H. P Moreira, F Delbove, J. V Valarelli

1-12
- PDF (Portuguese (Brazil))
Problems concerning the extinction of organisms

S Petri

13-19
- PDF (Portuguese (Brazil))
Morphologic and chemical alteration of titanite in the weathering profile of nepheline syenites of the Passa Quatro Alkaline Massif, Minas Gerais

J. B Sígolo, B Boulangé

21-34
- PDF (Portuguese (Brazil))
A palynologic study of sediments from the Icó Basin, Cretaceous of the State of Ceará, Brazil

M. R Lima

35-46
- PDF (Portuguese (Brazil))
Regression with variables subject to imprecision: an approach using the Monte Carlo method

G Amaral

47-52
- PDF (Portuguese (Brazil))
Linear regressions in geochronology: isochrons, errochrons, and pseudoisochrons

K Kawashita, I. K Sonoki, K Sato, H. M Sonoki

53-72
- PDF (Portuguese (Brazil))
Petrography and geochemistry of the Água Clara Formation, Araçaíba region, São Paulo

M. H. B. O Frascá, M. C. H Figueiredo, M. A Almeida, J. M. V Coutinho

73-92
- PDF (Portuguese (Brazil))