Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
The exceptional andalusite±kyanite±andalusite sequence occurs in Al-rich graphitic slates in a narrow pelite belt on the hangingwall of a ductile normal fault inNWVariscan Iberia. Early chiastolite is replaced by Ky±Ms±Pg aggregates, which are overgrown by pleochroic andalusite near granites intruded along the fault. Slates plot in AKFM above the chloritoid-chlorite tie-line. Their P±T grids are modelled with Thermocalc v2.7 and the 1998 databases in the NaKFMASH and KFMASH systems. The univariant reaction Ctd+And/Ky=St+Chl+Qtz+H2O ends at progressively lower pressure as F/FM increases and A/AFM decreases, shrinking the assemblage Cld±Ky±Chl, and opening a chlorite-free Cld±Ky trivariant ®eld on the low temperature reaction side. This modelling matches the observed absence of chlorite in high F/FM rocks, which is restricted to low pressure in the andalusite stability field.
The P±T path deduced from modelling shows a ®rst prograde event in the andalusite ®eld followed by retrogression into the kyanite ®eld, most likely coupled with a slight pressure increase. The ®nal prograde evolution into the andalusite field can be explained by two different prograde paths. Granite intrusion caused the ®rst prograde part of the path with andalusite growth. The subsequent thermal relaxation, together with aH2O decrease, generated the retrograde andalusite±kyanite transformation, plus chlorite consumption and chloritoid growth. This transformation could have been related to folding in the beginning, and aided later by downthrowing due to normal faulting. Heat supplied by syntectonic granite intrusion explains the isobaric part of the path in the late stages of evolution, causing the prograde andalusite growth after the assemblage St±Ky±Chl. Near postectonic granites, a prograde path with pressure decrease originated the assemblage St±And±Chl.
Since the mid-nineteenth century, geologists and paleontologists have recognized the scientific importance and unique nature of the richly fossiliferous sediments exposed along the Tjörnes Peninsula in Northern Iceland. In the following century and a half, Tjörnes has attracted the attention of an international “who’s who” in Cenozoic paleontology, as well as many paleoclimatologists unraveling the complex climatic history of the North Atlantic and Arctic Oceans.
Siento la necesidad de celebrar este proyecto con las personas que han transitado por mi universo cotidiano, sentimental y laboral, y que han permitido que desarrolle una formación humana y académica, tanto presente como futura. Este trabajo no hubiera sido posible sin el apoyo incondicional de personas que han dejado su huella ferviente en mi ser: en primer lugar, a mi madre Inés M. M. Peralta y a mi padre Osvaldo Ricardo Sironi, quienes con su amor incondicional apostaron su cotidianeidad para mi devenir humano y profesional. En segundo lugar, a mis hermanos Andrés, Mariano y Sebastián; a mis sobrinos/as Juliana, Juan Justo, Lautaro, Victoria, Juan Cruz y Amalia; a mis cuñadas Carolina, Andrea y Paola, como así también a mis numerosos tíos/as, primos/as y sobrinos/as por filiación materna; quienes han tolerado con mucho amor y paciencia mis altibajos personales, brindándome su apoyo constante en la lucha cotidiana (mas allá de la distancia geográfica que nos separa). <...>
I take pleasure in presenting a further edition (volume 32) of the internationally recognized and acclaimed series ‘Palaeoecology of Africa’ (PoA). Already since 1966 the series has published a large number of interdisciplinary scientific papers on landscape evolution and on former environments of selected areas within the African continent. Since the re-edition and re-launch of ‘Palaeoecology of Africa’ in 2007/2008 it is the fifth volume of the yearbook series that follows the new concept and layout under the restructured editorial board and by support of the publishing houses Routledge and CRC Press. Therefore, the ambitious goal of the editorial board and its editor in chief to have one book a year was almost reached. Many thanks go to all the contributing authors, colleagues and friends who directly and indirectly contributed during the last years to make this re-edition of ‘Palaeoecology of Africa’ a reality and a success. <...>
MORRIS, A. & TARLING, D. H. Palaeomagnetism and tectonics of the Mediterranean region: an introduction
Western Mediterranean
KIRKER, A. & MCCLELLAND, E. Application of net tectonic rotations and inclination analysis to a high-resolution palaeomagnetic study in the Betic Cordillera
VILLALAfN, J. J., OSETE, M. L., VEGAS, R., GARCfA-DUEI~AS, V. & HELLER, F. The Neogene remagnetization in the western Betics: a brief comment on the reliability of palaeomagnetic directions
FEINBERG, H., SADDIQI, O. & MICHARD, A. New constraints on the bending of the Gibraltar Arc from palaeomagnetism of the Ronda peridotites (Betic Cordilleras, Spain)
Der achte internationale Geologen-Kongress (Paris 1900) hat die Herausgabe eines Werkes beschlossen, dessen Hauptwert in der Wiederverf.f-fentlichung der Originale der fossilen Arten liegen soll- unter besonderer Berücksichtigung zunächst der alteren Formen u. derjenigen, deren Auffindung in der Litteratur mit Schwierigkeiten verknüpft ist. - Eine aus Vertretern der verschiedenen Lander zusammengesetzte Com-mission wurde mit der Aufgabe betraut, das Programm des Werkes zu entwerfen. Danach soll jede Art auf einem besonderen Blatt erscheinen und zwar:
1. Mit Wiedergabe ded ursprünglichen Original-Abbildung;
2. Mit ded Photographie ded Originals selbst;
3. Mit ded Wiederver.-iffentli-chung der vollständigen Diagnose und
Le dernier Congrès Géolo-gique International (Paris 1900) a adopté en principe la fondation d'une publication pa- : léontologique dont le but est de reediter les types des espèces fossiles, en s’attachant de pré-férence aux formes anciennes et à celles dont la recherche biblio-graphique est difficile. - Une Commission internationale a été chargéed’élaborerle programme de cette publication. Il a été décidé que chaque espèce serait publiée sur flehe afin de per-mettre Tadoption de différents modes de classement. <...>
The present work was carried out in partial fulfillment of the requirements for the degree of Doctor ol Philosophy at the University of Cincinnati. The author Blends his sincere thanks to the members of the Departments of Biological Sciences and Geology at the University fur generously giving of their time and knowledge during the preparation of the manuscript. Especial thanks is extended to Dr. К. Е. Caster, under whose direction the manuscript was prepared. I le was a source ol help and en-tonragement, and his invaluable library made many rare «inks readily available to me. 1 am indebted to Dr. Norman П. Newell for reviewing the manuscript and offering many helpful suggestions. To my "wife continuing thanks for proofreading and typing the greater bulk of the manu-Mtipt.
Earthquakes are one of the greatest natural hazards humans face. During the twentieth century alone, over two million people died during strong ground shaking, attendant fires, tsunamis and landslides. Most recently, in May 2008, about 80 000 people died in an earthquake in Sichuan Province in China and, earlier, on 26 December 2004, more than 200 000 people lost their lives to the tsunami resulting from the great earthquake off the west coast of Sumatra in Indonesia. In December 2003, the ancient city of Bam in Iran was destroyed by an earthquake, with the loss of over 30 000 lives. The worst disaster in modern times occurred in China in July 1976, when an entire city was destroyed and over 240 000 people killed in less than six minutes. Earlier, in 1556, an earthquake in north-central China killed an estimated 800 000 people, one of the worst natural disasters in recorded history. <...>