Sedimentation processes and new age constraints on rifting stages in Lake Baikal: results of deep-water drilling
Abstract With this paper we present a first attempt to
combine the direct results on lithology, composition
and age dating in the boreholes BDP-93, BDP-96 and
BDP-97 with geological and seismic data from the areas
where those sections were drilled. The sedimentary
environments represented by the BDP boreholes are
markedly different and possess characteristic litholog-
ical features. The results of the deep drilling provide
the essential means for testing …
Hypothesis for Cretaceous rifting of east Gondwana caused by subducted slab capture
Bruce P. Luyendyk Institute for Crustal Studies and Department of Geological Sciences, University of California,
Santa Barbara, California 93106-1100
ABSTRACT
In the process of subducted slab capture, a spreading ridge approaches subparallel to
a subduction zone following the trailing edge of a downgoing plate. Eventually the down-
going plate is too young and small to subduct, and spreading stops. The spreading ridge
stalls many tens of kilometres outboard of the subduction zone. The subducted plate welds
to the outboard plate across the dormant spreading center and is captured by it. The
captured plate then acquires the motion of the plate it welded to. In the southwest Pacific
the Pacific-Phoenix …
The automation of Science
Ross D. King,
Jem Rowland,
Stephen G. Oliver,
Michael Young,
Wayne Aubrey,
Emma Byrne,
Maria Liakata,
Magdalena Markham,
Pınar Pir,
Larisa N. Soldatova,
Andrew Sparkes,
Kenneth E. Whelan,
Amanda Clare
The basis of science is the hypothetico-deductive method and the recording of experiments in
sufficient detail to enable reproducibility. We report the development of Robot Scientist “Adam,”
which advances the automation of both. Adam has autonomously generated functional genomics
hypotheses about the yeast Saccharomyces cerevisiae and experimentally tested these hypotheses
by using laboratory automation. We have confirmed Adam’s conclusions through manual
experiments. To describe Adam’s research, we have developed an ontology and logical language.
The resulting formalization involves over 10,000 different research units in a nested treelike
structure, 10 levels …
Al2O3 Physical properties
W. Y. Ching,
Lizhi Ouyang,
Paul Rulis,
and Hongzhi Yao1
Department of Physics, University of Missouri-Kansas City, Kansas City, Missouri 64110, USA
Department of Physics and Mathematics, Tennessee State University, Nashville, Tennessee 37211, USA
Based on the most recently determined noncubic structure for -Al2O3 by Menendez-Proupin and Gutierrez,
a comprehensive list of physical properties is investigated theoretically. These include lattice dynamics and
phonon spectra, elastic constants and bulk structural parameters, electronic structure and interatomic bonding,
optical properties, and x-ray absorption near-edge structure XANES spectra. Compared to similar calcula-
tions of -Al2O3, we find a smaller lowest zone-center vibrational mode at 97.6 cm−1
, a lower heat capacity,
a smaller bulk modulus, and …