Microbialitic structures in the Sarmatian carbonate
deposits from Simleu Basin ...................................... 3
H. DAOUD & I.I. BUCUR
The metamorphic basement of Romanian Carpathians: a
discussion of K-Ar and 40Ar-39Ar ages ........................... 15
С. STRUTINSKI, A. PUŞTE & R. STAN
A novel morphological type of siderite in the jamesonite
paragenesis from Herja (Maramures County, Romania) ............. 23
V. GHIURCĂ & D. POP
New data on the mineralogy of the salt deposits from
Slănic Prahova (Romania) ....................................... 29
N. HAR, O. BARBU, V. CODREA & I. PETRESCU
Clay mineral association in the salt formation of
the Transylvanian Basin and its paleoenvironmental
significance ................................................... 35
N. BICAN-BRIŞAN & A. HOSU
Zeolitic volcanic tuffs from Măcicaş (Cluj County), natural
raw materials used for NH4+ removal from wastewaters ........... 43
H. BEDELEAN, M. STANCA, A. MĂICĂNEANU & S. BURCĂ
On the Hybodus (Euselachii) from the early Jurassic of Anina
(Caraş Severin district, Romania) .............................. 51
E.P. DICA & V. CODREA
New data on the Western Transylvanides along the Ampoi Valley
(Southern Apuseni Mts., Romania) ............................... 55
E. SUCIU-KRAUSZ, R. BĂLC & F. BORBEI
New U/Pb and Pb/Pb zircon ages from the Biharia terrane
rocks, Apuseni Mountains, Romania .............................. 61
I. BALINTONI, С BALICA, M. CLIVEŢI, L-Q. LI, H.P. HANN,
F. CHEN & V. SCHULLER
A few single crystal zircon ages from the Pades suite
orthogneisses (Southern Carpathians, Romania) .................. 67
I. BALINTONI, С BALICA, M. CLIVETI, L-Q. LI, H.P. HANN
& F. CHEN
Geological characteristics of the underground gas storages
from Romania ................................................... 71
I. FALK
Meetings ....................................................... 75
Announcements .................................................. 81
In Memoriam .................................................... 82
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