Contents
MIDDLE-LATE TRIASSIC 40Ar/39Ar HORNBLENDE AGES FOR EARLY INTRUSIONS WITHIN THE DITRAU ALKALINE MASSIF, RUMANIA: IMPLICATIONS FOR ALPINE RIFTING IN THE CARPATHIAN OROGEN
Published: Dec 1997
Pages: 347 - 352
Authors: DAVID R. DALLMEYER, HANS-GEORG KRAUTNER, FRANZ NEUBAUER
Abstract: Multigrain hornblende concentrates from two samples of massive gabbro and diorite collected within „early“ intrusive phases of the Ditrau alkaline complex (Rumania) record well-defined 36Ar/40Ar vs. 39Ar/40Ar plateau isotope correlation ages of 231.5 ± 0.1 Ma and 227.1 ± 0.1 Ma; 2σ intralaboratory error). These are interpreted as dating relatively rapid post-magmatic cooling at high crustal levels following pluton emplacement in the Middle-Late Triassic. The magmatic activity predated Early Jurassic rifting in the Eastern Carpathian orogen.
Keywords: Eastern Carpathians, Triassic, alkaline magmatism, rifting
Download PDF documentVolume 48 no. 6 / December 1997
DAVID R. DALLMEYER, HANS-GEORG KRAUTNER, FRANZ NEUBAUER
MIDDLE-LATE TRIASSIC 40Ar/39Ar HORNBLENDE AGES FOR EARLY INTRUSIONS WITHIN THE DITRAU ALKALINE MASSIF, RUMANIA: IMPLICATIONS FOR ALPINE RIFTING IN THE CARPATHIAN OROGENEMILIAN ROSU, ZOLTAN PECSKAY, AVRAM STEFAN, GHEORGHE POPESCU, CRISTIAN PANAIOTU, CRISTINA E. PANAIOTU
THE EVOLUTION OF THE NEOGENE VOLCANISM IN THE APUSENI MOUNTAINS (RUMANIA): CONSTRAINTS FROM NEW K-Ar DATAJOACHIM SCHWEIGL, FRANZ NEUBAUER
SEMIDUCTILE DEFORMATION IN PELAGIC LIMESTONES AT DIAGENETIC CONDITIONSPETER MASARYK, OTILIA LINTNEROVA
DIAGENESIS AND POROSITY OF THE UPPER TRIASSIC CARBONATES OF THE PRE- NEOGENE VIENNA BASIN BASEMENTNIGEL J. COOK, GHEORGHE S. DAMIAN
NEW DATA ON ”PLUMOSITE” AND OTHER SULPHOSALT MINERALS FROM THE HERJA HYDROTHERMAL VEIN DEPOSIT, BAIA MARE DISTRICT, RUMANIAKAMIL ZAGORSEK
EOCENE ANASCAN BRYOZOA FROM NEW LOCALITIES IN THE WESTERN CARPATHIANS, SLOVAKIA