In Brief

Table of Contents: Masthead The Dean Reports From 1892 to 2000: The Law School Prepares for Another Century New Health Law Professors (Hoffman and Berg) Class of 1999 Employers Moot Court Team Wins Trip to National Competition Law School Welcomes Shimon Shetreet Michael Heise, Equal Educational Opportunity for the Next Millennium: New Remedies for an Old Problem Kostritsky and Sharpe Named to Endowed Chairs Faculty Approves Curriculum Committees\u27 Recommendations Society of Benchers Inducts Nine New Members Fall 1999-Spring 2000 Lecture Series Speakers Commencement 1999 Richard North Patterson, \u2770, Commencement Address Alumni Awards and Honors Past Award Recipients Law Alumni Association Canada-U.S. Law Institute Conference LL.M. in U.S. Legal Studies: From 4 to 46 LL.M. Reunion 2001 Professor Katz Visits Middle East Alums Faculty Notes In Memoriam (faculty) AlumNotes In Memoriam (alumni) CWRU Law Alumni Association CWRU School of Law Visiting Committee Calendar of Events Alumni Weekend 2000https://scholarlycommons.law.case.edu/in_brief/1072/thumbnail.jp

Contributions to the geochronology and geological evolution of the Central African Copperbelt

PhD - ScienceThis thesis presents the results of a broad geochronological investigation into the nature and evolution of the Central African Copperbelt, host of world class Cu-Co deposits in Zambia and the Democratic Republic of Congo. UPb SHRIMP dating of detrital, xenocrystic and magmatic zircons and metamorphic monazite as well as 40Ar-39Ar analyses on biotite, muscovite and microcline constrained the nature and the evolution of the basement, the deposition of the Katangan sedimentary sequence and the provenance of the sediments, and finally the different metamorphic episodes which affected the region. Regarding the pre-Katangan basement, U-Pb SHRIMP analyses of detrital and xenocrystic zircons revealed the first evidence of a cryptic c. 3.2-3.0 Ga Mesoarchaean terrane, named the Likasi terrane, in the basement of the Copperbelt. It was also discovered that the Lufubu schists, previously thought to be sedimentary in origin, are in fact intermediate metavolcanic rocks. These Lufubu schists, together with granitoids and gneisses from Zambia, yielded U-Pb SHRIMP ages between 2050 Ma and 1850 Ma and are interpreted as being related to the evolution of a large magmatic arc (or several magmatic arcs). These Paleoproterozoic terrains define the Lufubu Metamorphic Complex, which evolved together with the Bangweulu Block, the Ubendian Belt and the Tanzanian craton to collide with the Angola-Kasai craton to form the Kibaran Belt during the 1.4-1.0 Ga Kibaran Orogeny. Unconformably overlying the Lufubu Metamorphic Complex is the Muva Group, which is sedimentary in origin. A maximum U-Pb age of 1941 ± 40 Ma was found for its deposition in the Copperbelt area. Concerning the Katanga Supergroup, U-Pb SHRIMP analyses on detrital zircons showed that the sediments are mainly derived by erosion from the Paleaoproterozoic basement. 40Ar-39Ar analyses of detrital muscovites from the Biano Group, which forms the topmost unit of the Katanga Supergroup, yielded a maximum age of deposition of 573 ± 5. This implies a terminal Neoproterozoic and/or early Palaeozoic age for terminal Katangan deposition, and supports previous models for the deposition of the Biano Group in a foreland basin to the Lufilian Orogen . Finally, U-Pb SHRIMP analyses on monazites and 40Ar-39Ar analyses on biotite, muscovite and K-feldspar yielded ages at c. 590, c. 530, c. 512 and a range between 492 and 450 Ma. These ages correspond respectively to various events during and following the Pan-African Damaran-Lufilian- Zambezi orogeny, formed by collision of the Congo and Kalahari cratons, namely to a tectonic event coinciding with subduction-related eclogite facies metamorphism elsewhere in the Lufilian orogen; to the final stage of collision between the Kalahari and Congo cratons; to a wide-spread regional mineralising event; and finally to post-orogenic uplift and regional cooling

Extracting and Unfolding a Stratigraphic Unit to Update Property Population

International audienceWith the wide usage of geo-modelling tools, users could have the need to enhance their previous geostatiscal population without rebuilding an entire stratigraphic model In this paper we explain how we can extract non explicit information from a stratigraphic model (reference iso-chronological surfaces, faults used to constraint the model), and then, use this information to realise 3D flattening on iso-chronological surfaces prior to geostatiscal population. Three methods were presented here: traditional by topological correspondence, vertical shear and an original isometric unfolding process based on the minimization of the elastic tensor deformation. These methods could be applied for every type of deposit: Horizontal, Parallel to Top, parallel to Bottom, Proportional. Then, we compare the application of these methods on several case studies and develop the advantages to reengineer a stratigraphic model and repopulate it after flattening. Even if the "traditional" and vertical shear methods could be applied on certain situations, following multiple test bed as the ones presented in this paper, we are thinking that the isometric unfolding presented here is much reliable. As a consequence, we will exploit more and more this isometric unfolding method in the next future and process each lithostratigraphic unit independently than the others

L’homopaternité en Italie, ou quand une « nouvelle parentalité » devient un cas national

En Italie, Nichi Vendola s’est affirmé ces dernières années comme l’une des personnalités politiques les plus influentes de la gauche et comme un acteur irremplaçable de la cause homosexuelle. Au mois de février 2016, il annonce que son compagnon et lui-même sont devenus pères d’un enfant, né aux États-Unis grâce à une gestation pour autrui. Quelques minutes après cette annonce, le « cas Vendola » occupe le premier plan des médias et réseaux sociaux italiens, lesquels relatent en même temps les discussions autour d’un projet de loi portant sur les unions civiles et qui devrait, entre autres, autoriser l’adoption d’un enfant, y compris par un couple homosexuel. Dans cet article, nous nous proposons de faire émerger, sur la base d’un corpus constitué de textes publiés en ligne après l’annonce de cette naissance, les modalités linguistiques qui connotent et orientent le champ de représentations, au sens sociologique du terme, dans lequel s’affrontent, aussi bien au niveau idéologique que sur le plan culturel et (bio)éthique, des positions opposées, voire inconciliables à l’égard de la filiation.In recent years, Nichi Vendola has emerged as one of the most influent politicians of the left party in Italy as well as an irreplaceable player in the homosexual community rights. In February 2016, he announced that his companion and himself became fathers of a child born in the United States thanks to surrogacy. Just a few minutes after this announcement, the « Vendola case » was at the forefront of the Italian media and social networks, which relate at the same time the debates about the draft of an Act on civil unions. This Act allow, inter alia, the adoption of a child, including by same sex couples. On the basis of a body of online texts published after the announcement of the birth, we propose to highlight language procedures that connote the field of representations, in the sociological sense of the term. In this field of representations, both on an ideological, cultural and (bio)ethics level, opposite even irreconcilable positions with regard to the parental affiliation clash

A knowledge-based approach of seismic interpretation : horizon and dip-fault detection by means of cognitive vision.

International audienceThe present paper presents preliminary results obtained through a new seismic interpretation methodology based on cognitive vision. This methodology consists in associating to the geological objects to be detected, horizons or faults, visual characteristics that allow to easily identify and correlate them on seismic images. The results presented show that the method is performing well and is easy to be integrated in Shared Earth Modeling workflows

Remobilisation features and structural control on ore grade distribution at the Konkola stratiform Cu-Co ore deposit, Zambia

The Konkola deposit is a high grade stratiform Cu–Co ore deposit in the Central African Copperbelt in Zambia. Economic mineralisation is confined to the Ore Shale formation, part of the Neoproterozoic metasedimentary rocks of the Katanga Supergroup. Petrographic study reveals that the copper–cobalt ore minerals are disseminated within the host rock, sometimes concentrated along bedding planes, often associated with dolomitic bands or clustered in cemented lenses and in layer-parallel and irregular veins. The hypogene sulphide mineralogy consists predominantly of chalcopyrite, bornite and chalcocite. Based upon relationships with metamorphic biotite, vein sulphides and most of the sulphides in cemented lenses were precipitated during or after biotite zone greenschist facies metamorphism. New δ34S values of sulphides from the Konkola deposit are presented. The sulphur isotope values range from −8.7‰ to +1.4‰ V-CDT for chalcopyrite from all mineralising phases and from −4.4‰ to +2.0‰ V-CDT for secondary chalcocite. Similarities in δ34S for sulphides from different vein generations, earlier sulphides and secondary chalcocite can be explained by (re)mobilisation of S from earlier formed sulphide phases, an interpretation strongly supported by the petrographic evidence. Deep supergene enrichment and leaching occurs up to a km in depth, predominantly in the form of secondary chalcocite, goethite and malachite and is often associated with zones of high permeability. Detailed distribution maps of total copper and total cobalt contents of the Ore Shale formation show a close relationship between structural features and higher copper and lower cobalt contents, relative to other areas of the mine. Structural features include the Kirilabombwe anticline and fault zones along the axial plane and two fault zones in the southern limb of the anticline. Cobalt and copper behave differently in relation to these structural features. These structures are interpreted to have played a significant role in (re)mobilisation and concentration of the metals, in agreement with observations made elsewhere in the Zambian Copperbelt

Extreme wave height events in NW Spain: a combined multi-sensor and model approach

The Galician coast (NW Spain) is a region that is strongly influenced by the presence of low pressure systems in the mid-Atlantic Ocean and the periodic passage of storms that give rise to severe sea states. Since its wave climate is one of the most energetic in Europe, the objectives of this paper were twofold. The first objective was to characterize the most extreme wave height events in Galicia over the wintertime of a two-year period (2015–2016) by using reliable high-frequency radar wave parameters in concert with predictions from a regional wave (WAV) forecasting system running operationally in the Iberia-Biscay-Ireland (IBI) area, denominated IBI-WAV. The second objective was to showcase the application of satellite wave altimetry (in particular, remote-sensed three-hourly wave height estimations) for the daily skill assessment of the IBI-WAV model product. Special attention was focused on monitoring Ophelia—one of the major hurricanes on record in the easternmost Atlantic—during its 3-day track over Ireland and the UK (15–17 October 2017). Overall, the results reveal the significant accuracy of IBI-WAV forecasts and prove that a combined observational and modeling approach can provide a comprehensive characterization of severe wave conditions in coastal areas and shows the benefits from the complementary nature of both systems.The authors also would like to thank the support by Interreg Atlantic Area project MyCOAST (EAPA 285/2016) co-funded by the ERDF (EU)S

Extreme wave height events in NW Spain: a combined multi-sensor and model approach

The Galician coast (NW Spain) is a region that is strongly influenced by the presence of low pressure systems in the mid-Atlantic Ocean and the periodic passage of storms that give rise to severe sea states. Since its wave climate is one of the most energetic in Europe, the objectives of this paper were twofold. The first objective was to characterize the most extreme wave height events in Galicia over the wintertime of a two-year period (2015–2016) by using reliable high-frequency radar wave parameters in concert with predictions from a regional wave (WAV) forecasting system running operationally in the Iberia-Biscay-Ireland (IBI) area, denominatedIBI-WAV. The second objective was to showcase the application of satellite wave altimetry (in particular, remote-sensed three-hourly wave height estimations) for the daily skill assessment of the IBI-WAV model product. Special attention was focused on monitoring Ophelia—one of the major hurricanes on record in the easternmost Atlantic—during its 3-day track over Ireland and the UK (15–17 October 2017). Overall, the results reveal the significant accuracy of IBI-WAV forecasts and prove that a combined observational and modeling approach can provide a comprehensive characterization of severe wave conditions in coastal areas and shows the benefits from the complementary nature of both systems