نتایج جستجو برای: all apparently began ca 5 2 ma
تعداد نتایج: 4519419 فیلتر نتایج به سال:
C.R. Laumann,1 D.A. Huse,2 A.W.W. Ludwig,3 G. Refael,4 S. Trebst,5, 6 and M. Troyer7 Department of Physics, Harvard University, Cambridge, MA 02138 Department of Physics, Princeton University, Princeton, NJ 08544 Department of Physics, University of California, Santa Barbara, CA 93106 Department of Physics, California Institute of Technology, Pasadena, CA 91125 Microsoft Research, Station Q, Un...
Shengji Wei, Eric Fielding, Sebastien Leprince, Anthony Sladen, Jean-Philippe Avouac, Don Helmberger, Egill Hauksson, Risheng Chu, Mark Simons, Kenneth Hudnut, Thomas Herring and Richard Briggs 1, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA 2, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA 3, ...
Key to this dis cov ery was the rec og ni tion of a group of Palaeozoic, sub ma rine vol ca nic rocks, named the Mount Attree volcanics, which had pre vi ously been mapped as part of the Lower Ju ras sic Telkwa For ma tion (Woodsworth et al., 1985). The Lower Telkwa vol ca nic rocks are not con sid ered pro spec tive for VHMS de pos its be cause they formed in a subaerial, compressional en vi r...
The ascent of dinosaurs in the Triassic is an exemplary evolutionary radiation, but the earliest phase of dinosaur history remains poorly understood. Body fossils of close dinosaur relatives are rare, but indicate that the dinosaur stem lineage (Dinosauromorpha) originated by the latest Anisian (ca 242-244 Ma). Here, we report footprints from the Early-Middle Triassic of Poland, stratigraphical...
Constraining tectonic uplift history within the Tibetan Plateau is critical to understanding its deformational response continental collision. However, it difficult extrapolate orogen-scale from any single method alone. Here, we combined high-resolution deep and shallow seismic imaging (on order of 103 102 meters in depth, respectively) with geologic paleoseismic trenching several depth) Qilian...
1. Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA 02114, USA. 2. Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA. 3. Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Charlestown, MA 02129, USA. 4. Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, ...
AT JK AND CB A. Buch 1 , C. Szopa 2 , C. Freissinet 3 , D. P. Glavin 3 , P. Coll 4 , M. Cabane 2 , J. Eigenbrode 3 , K. Miller 5 , M. Martin 3 , R. E. Summons 5 , D. Archer 6 , A. Brunner 3 , P. Conrad 3 , S. Teinturier 2 , D. Coscia 2 , J. Dworkin 3 , J. Grotzinger 7 , P. Mahaffy 3 , C. McKay 8 , D. Ming 9 , R. Navarro-González 10 , and the MSL Science Team. 1 Ecole Centrale Paris, 92295 Chate...
A 29-year-old white woman (weight, 1211b; height, 5 ft 6 in.) was referred to the Hypertension Unit of Massachusetts General Hospital in December 1984. She had been athletic and apparently in excellent health until September 1979 when she contracted an upper respiratory tract infection associated with wheezing. She was treated with prednisone for 5 days with resolution of the symptoms but later...
On January 1, 2006, the Medicare program began offering prescription drug coverage (Medicare Part D) to over 42 million Medicare beneficiaries. This policy brief provides a first snapshot of enrollment in rural and urban areas across the United States and outlines the early findings from an analysis of plans available to rural persons under Medicare's Part D program. The data in this brief will...
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