Le roman de Christine : roman dramatique / Georges Spitzmuller

Collection : Le livre national ; n° 293

Bridging the Faraoni and Selli oceanic anoxic events: late Hauterivian to early Aptian dysaerobic to anaerobic phases in the Tethys

A detailed geochemical analysis was performed on the upper part of the Maiolica Formation in the Breggia (southern Switzerland) and Capriolo sections (northern Italy). The analysed sediments consist of well-bedded, partly siliceous, pelagic carbonate, which lodges numerous thin, dark and organic-rich layers. Stable-isotope, phosphorus, organic-carbon and a suite of redox-sensitive trace-element contents (RSTE: Mo, U, Co, V and As) were measured. The RSTE pattern and C-org:P-tot ratios indicate that most organic-rich layers were deposited under dysaerobic rather than anaerobic conditions and that latter conditions were likely restricted to short intervals in the latest Hauterivian, the early Barremian and the pre-Selli early Aptian. Correlations are both possible with organic-rich intervals in central Italy (the Gorgo a Cerbara section) and the Boreal Lower Saxony Basin, as well as with the facies and drowning pattern in the Helvetic segment of the northern Tethyan carbonate platform. Our data and correlations suggest that the latest Hauterivian witnessed the progressive installation of dysaerobic conditions in the Tethys, which went along with the onset in sediment condensation, phosphogenesis and platform drowning on the northern Tethyan margin, and which culminated in the Faraoni anoxic episode. This episode is followed by further episodes of dysaerobic conditions in the Tethys and the Lower Saxony Basin, which became more frequent and progressively stronger in the late early Barremian. Platform drowning persisted and did not halt before the latest early Barremian. The late Barremian witnessed diminishing frequencies and intensities in dysaerobic conditions, which went along with the progressive installation of the Urgonian carbonate platform. Near the Barremian-Aptian boundary, the increasing density in dysaerobic episodes in the Tethyan and Lower Saxony Basins is paralleled by a change towards heterozoan carbonate production on the northern Tethyan shelf. The following return to more oxygenated conditions is correlated with the second phase of Urgonian platform growth and the period immediately preceding and corresponding to the Selli anoxic episode is characterised by renewed platform drowning and the change to heterozoan carbonate production. Changes towards more humid climate conditions were the likely cause for the repetitive installation of dys- to anaerobic conditions in the Tethyan and Boreal basins and the accompanying changes in the evolution of the carbonate platform towards heterozoan carbonate-producing ecosystems and platform drowning.

Constraints on the late thermotectonic evolution of the Western Alps - Evidence for episodic rapid uplift

Forty-two new apatite and zircon fission track ages are presented for samples from the Western Alps in southern Switzerland, northern Italy, and southeastern France. Measured ages plotted against assumed closure temperatures yield cooling patterns for the final cooling, uplift, and exhumation of the Western Alps. Similar fission track zircon ages in the Penninic Gran Paradiso massif, Dent Blanche nappe, Sesia-Lanzo Zone, and Ivrea Zone indicate cooling of all four units to approximately 225-degrees-C by 33 Ma. Differences in apatite ages reveal differential cooling of the four blocks between 33 Ma and the present. In the Sesia-Lanzo Zone, similarity of apatite ages regardless of elevation, together with near-volcanic confined fission track length patterns suggest rapid cooling and uplift at approximately 25 Ma compared with slow cooling of other Western Alps units around 12 Ma. Uplift is thus not continuous but episodic, often over a short time interval beyond the resolution of other methods. Such episodes of uplift, as revealed here in the Sesia-Lanzo Zone, may be the rule rather than the exception.

Théâtre itinéraire de la Guerre actuelle entre les Turcs, d'une part, les Russes et les Impériaux, d'autre part : carte relative aussi au partage éventuel d'une partie de l'Empire Othoman / par M[onsieur Louis] Brion de la Tour, Ing[énieu]r Géographe du Roi

Échelle(s) : [1:3 400 000 ca] Échelle de Lieues d'une heure, ou de 20 au Degré 80 = [10,4 cm] (d'après échelles graphiques).

Théâtre itinéraire de la Guerre actuelle entre les Turcs, d'une part, les Russes et les Impériaux, d'autre part : carte relative aussi au partage éventuel d'une partie de l'Empire Othoman / par M[onsieur Louis] Brion de la Tour, Ing[énieu]r Géographe du Roi

Échelle(s) : [1:3 400 000 ca] Échelle de Lieues d'une heure, ou de 20 au Degré 80 = [10,4 cm] (d'après échelles graphiques).

L'héritier des Monlardon : roman parisien / Octave Pradels

Collection : Collection frivole ; n° 3

Estats de l'Empire des Turqs en Europe, subdivisés suivant l'estendüe des Beglerbeglicz, ou Gouvernements dans lesquels sont marquées les résidences des Sangiacz qui en dépendent. ou sont encor la Transilvanie, la Valaquie, la Moldavie, la Petite Tartarie, &c. Tributaires des Turqs. Dressé sur les Memoires les plus Nouveaux / Par le Sr. Sanson, ... ; Dedié au roy ; Par... Hubert Iaillot, ... ; Cordier Sculpsit

Échelle(s) : [1:4 100 000 environ], Mille Pas Geometriques, ou Mille d'Italie 180 [= 8 cm]

Estats de l'Empire des Turqs en Europe, subdivisés suivant l'estendüe des Beglerbeglicz, ou Gouvernements dans lesquels sont marquées les résidences des Sangiacz qui en dépendent. ou sont encor la Transilvanie, la Valaquie, la Moldavie, la Petite Tartarie, &c. Tributaires des Turqs. Dressé sur les Memoires les plus Nouveaux / Par le Sr. Sanson, ... ; Dedié au roy ; Par... Hubert Iaillot, ... ; Cordier Sculpsit

Échelle(s) : [1:4 100 000 environ], Mille Pas Geometriques, ou Mille d'Italie 180 [= 8 cm]

Carte des régences d'Alger, de Tunis et de Tripoli, avec l'empire de Maroc : comprenant aussi tout le bassin intérieur de la Méditerranée et une grande partie des États qui forment ses limites européennes / par Hérisson, géog[raph]e ; gravé par J. B. Tardieu

Échelle(s) : [ca 1:2 858 000], échelle 10 myriamètres [= 3,5 cm]