352 research outputs found
Unravelling source rocks of episutural and foredeep Late Eocene-Miocene arenites of northern Apennines and southern Alps
No full textEffects of hydrothermal fluids on the heavy mineral assemblage of a late Pleistocene succession deposited in an oceanic ridge valley (Escanaba Trough, Juan De Fuca Plate)
No full textThis short contribution deals with the behaviour and modification of heavy mineral assemblages in a 500 m-thick turbidite succession deposited in the rift valley of the 3300m deep Escanaba Trough
of the Juan de Fuca Plate. To our knowledge, there have been no previous studies on the effects of hydrothermal fluid circulation on heavy minerals in such an active geochemical environment.
The sediments were transported mainly from glacial lakes of the Columbia drainage basin by cataclysmic floods during the last 60 ka. Climatic and sediment transport conditions imply minor
weathering of the source rocks, with little sorting and mechanical abrasion of heavy minerals during transit. Our results indicate that the heavy minerals experienced severe chemical etching and dissolution by circulating hydrothermal pore fluids that caused, at various depths, the complete loss of particular species, especially the chemically highly unstable ortho- and clinopyroxenes. These specific geochemical conditions also generated new minerals, mainly titanite, iron-rich magnesite, barite, and pyrite. However, at present there is insufficient data to fully constrain the kinetics of dissolution of the various minerals as a function of pH, temperature, composition of pore fluids, and sediment-permeability. The length of time during which the sediments were affected by pore fluid movements is constrained by the very young (Late Pleistocene, 60 ka) age of the sediments
Confirmation and improvement of Sokal's prognostic classification of Ph+ chonic myeloid leukemia: the value of early evaluation of the course of the disease.
No full textA prospective comparison of alpha-IFN and conventional chemotherapy in Ph+ chronic myeloid leukemia. Clinical and cytogenetic results at 2 years in 322 patients
No full text
Evaluating survival after allogeneic bone marrow transplant for chronic myeloid leukaemia in chronic phase: a comparison of transplant versus no-transplant in a cohort of 258 patients first seen in Italy between 1984 and 1986
No full textAuthor correction: obesity and ethnicity alter gene expression in skin
No full textDaniel Butler was omitted from the author list in the original version of this Article. The Author contributions section now reads: “J.M.W. designed, conducted, and contributed to the writing of the manuscript, prepared Fig. 1. S.G. evaluated and did statistical analysis on the skin and fat samples, prepared Figs. 2–9. J.O.A. evaluated and contributed to writing the manuscript. D.B prepared and sequenced DNA libraries for the skin microbiota data, and wrote the applicable parts of the methods section. C.M. analyzed and wrote up the skin microbiota data, prepared Fig. 10. All authors have read the manuscript and approved its contents. D.D. analyzed and wrote up the skin microbiota data. S.Z. ran and analyzed the skin metabolite data. J.S. assisted in design, analysis and wrote up the skin metabolite data. J.K. assisted in analysis write up of skin and fat data. J.L.B. assisted in analysis, interpretation and writing of the manuscript. P.R.H. designed, analyzed, interpreted the data, and was the primary author of the manuscript.” This has been corrected in the PDF and HTML versions of the Article, and in the accompanying Supplementary Information file.</p
Apatite fission-track analysis of Neogene exhumation in northern Corsica (France)
No full textApatite fission-track analyses along a W-E-orientated transect across northern Corsica indicate an important episode of crustal exhumation in late early Miocene time. Samples taken from the Alpine orogenic wedge, from the adjacent foreland basin and from the crystalline basement complex flooring the basin are completely reset. This implies that a ≥ 2.0-2.3-km-thick crustal section made of thrust sheets and/or autochthonous foreland deposits has been removed by erosion since early Miocene time. A geometric projection of this lost cover towards the west indicates that all of northern Corsica was covered either by Alpine nappes or middle Eocene foreland deposits. Fission-track ages are the same across the main boundary fault system separating the Alpine orogenic wedge and the foreland, indicating the absence of significant differential vertical displacement between upper and lower plates during Neogene unroofing
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