Pii: S0040-1951(00)00209-2
نویسندگان
چکیده
The denudation budget of the Alps is quantified for the main period of lateral extrusion between 22 and 12 Ma. The relative importance of tectonic denudation increases from W to E from ,70% in the Lepontine window in the Swiss Alps to ,80% in the Tauern window and to more than 95% in the Rechnitz window. The driving mechanism of tectonic denudation was eastward extrusion due to an unconstrained orogenic margin in the Pannonian basin. Tectonic denudation in the Alps was responsible for about 30% of the total exhumation between 22 and 12 Ma. q 2001 Elsevier Science B.V. All rights reserved.
منابع مشابه
Pii: S0040-4020(00)00678-5
The diazo group of a series of a-diazo carbonyl compounds can be reduced to the corresponding CH2 group by Bu3SnH under Cu(acac)2-catalytic or photochemical conditions. The mechanistic aspects of this reaction were investigated in some detail, and a possible reaction pathway was discussed. q 2000 Elsevier Science Ltd. All rights reserved.
متن کاملPii: S0040-4020(00)00693-1
ÐKnoevenagel condensation between 3-nitro-2-pyridinecarbaldehyde and diethyl malonate catalyzed by titanium(IV) chloride gave diethyl 3-nitro-2-pyridylidenemalonate which was oxidized with peracetic acid to give corresponding 1-oxide. Reaction of the latter with diethylamine in the presence of primary and secondary alcohols resulted in the reduction of the nitro group and the oxidation of the v...
متن کاملPii: S0040-6090(00)00655-6
We report on the observation of ,1.54 mm guided wave absorption and ̄uorescence in channel waveguides fabricated in erbium-doped thin-®lm epitaxial BaTiO3. Luminescence transient measurements indicate that the relaxation of the excited Er ions is dominantly radiative. q 2000 Elsevier Science S.A. All rights reserved.
متن کاملPii: S0040-4039(99)00696-6
The first example o f an intramolecular Westphal condensat ion is described. To test the utility of this reaction, new benz(l)azino[2,1-a]phthalazinium salts have been prepared from appropriate dicarbonyl precursors. © 1999 Elsevier Science Ltd. All rights reserved.
متن کامل