result from RP, they give an age range of 294 rt: 6 (RPz and RP to 283 f 8. This complex consists of 10 intrusive units (Peter- sen, 1978a, b; Neumann, 1980) which have been numbered from I (oldest) to X (youngest). Amsterdam - Printed in The Netherlands 67 Age relations among Oslo Rift magmatic rocks: implications for tectonic and magmatic modelling. The average rate for the whole Oslo Graben.35 km3 per lo3 years. On the basis of Sm- Nd, Rb-Sr and trace element data it has been found that most of the basaltic and the monzonitic rocks (RP lavas and larvikites) originated in a mildly depleted mantle source (initial 87Sr/86Sr.7039). On the basis of 87Sr/ssSr initial ratios and type of magmatic products, we estimate magmas to have been emplaced into the crust only during the first 20-25 Ma of the magmatic period.
The gabbros at Hadeland have not been dated, but two of the Grefsen syenites at Nord- marka, Gjerdingen and Grefsen, give similar ages of about 255. This, in turn, led to anatectic melting in the Precambrian country rocks. And Wandaas,., in prep. Continental rifting and pohy-molybdenum occurrences in the Oslo region, Norway. The Oslofjorden Fault Zone (FZ the 0ymark FZ, the Mjosa-Xneren Zone, the Porsgruxu-Kristiansand FZ, and the Meheia- Ada1 FZ) were reactivated during the Oslo rifting event (e.g. NK Norliskampen; SK Skurven; FK Fjellsjekampen. Tectonophysics, 178: 89-107 (this issue). Convective thinning of the lithosphere: a mechanism for rifting and mid-plate volcanism on Eath, Venus and Mars. K-Ar dates on some late diabase dykes from the Oslo area (Akershus GS) have given ages of around 220 Ma (Dons, 1972).
Lik oss p Facebook.
Vietnamese iced coffee and, oslo in black and white, captured by Hoang Bui and his 50mm.
This is where you should have your coffee to go or hummus for.
A ha-ha post from the hot - hot spot.
S.: went to a reception.
Julemeny oslo, Pilegrimsleden oslo trondheim, Oslo fjellbacka,