994 resultados para 186-1151C


Relevância:

70.00% 70.00%

Publicador:

Resumo:

We present composite depth scales for the multiply cored intervals from Sites 1150 and 1151. These new depth scales place coeval strata recovered in cores from different holes at a single site into a common stratigraphic framework. At Site 1150, double coring between Holes 1150A and 1150B occurred over only a short interval between ~703 and 713 meters below seafloor (mbsf), but this is sufficient to tie the upper portion of the stratigraphic section cored in Hole 1150A to the lower portion cored in Hole 1150B. The upper ~100 m of the sedimentary section at Site 1151 was double cored with the advanced piston corer and partially cored with the rotary core barrel, resulting in the complete recovery of this interval. The composite depth scales were constructed using Splicer software to vertically adjust the relative depths of various cores from one hole to the depths from another hole so as to align distinct physical properties measured on cores. The magnetic susceptibility data was the physical property most easily correlated between holes, and therefore primarily used to create a composite depth scale and spliced stratigraphic section. The spliced section is a continuous stratigraphic section constructed from representative cored intervals from the holes at a site. Both the splice and the composite depth scale can be applied to other data sets from Site 1151 to provide a stratigraphically continuous and laterally consistent basis for interpreting lithologic features or data sets. The resulting composite scale showed a 30% improvement in correlation of the magnetic susceptibility data relative to the original mbsf depth scale, and comparable improvement when applied to the other data sets.

Relevância:

70.00% 70.00%

Publicador:

Resumo:

The sediments collected at Sites 1150 and 1151 during Leg 186 included many tephra layers and volcaniclastic detritus. In order to identify these tephras, the major oxide compositions of individual glass shards were determined by electron probe microanalyzer. The uppermost four tephras in sediments from Hole 1150A are correlated with the Towada-Hachinohe tephra (To-H; Tohoku district), Shikotsu Daiichi (1st) tephra (Spfa-1; Hokkaido district), Narugo-Yanagisawa tephra (Nr-Y; Tohoku district), and Aso-4 tephra (Kyushu district), respectively. The uppermost tephra in Hole 1151C is correlated with To-H tephra. To-H, Spfa-1, and Aso-4 tephras are also present in piston core KH94-3, LM-8, collected between Sites 1150 and 1151. Eruptive ages of To-H and Spfa-1 estimated from the oxygen isotopic Stages of core KH94-3, LM-8 are between 14.9-15.3 and 39.5-40.1 ka.

Relevância:

70.00% 70.00%

Publicador:

Resumo:

Major element geochemical composition was established for 59 tephra horizons from Ocean Drilling Program Sites 1150 and 1151, located in the Japan forearc. These data, encompassing typically between 15 and 30 individual shard analyses per tephra horizon, were used to investigate the degree to which sediment reworking, postdepositional geochemical alteration, and geochemical uniqueness of individual eruptives facilitate or impede the potential for establishing a tephrostratigraphical framework for the Japan Trench, as well as usage of the tephra record to document arc evolution. Evidence was found that hydration (termed phase 1 alteration) of glass shards increases with age in the Pliocene-Pleistocene, but there is no indication that element leaching (phase 2 alteration) has occurred. Post- or syn-depositional differences in preservational style are shown to have no significant bearing on tephrogeochemical homogeneity and suitability for tephrostratigraphical analysis. Overall, therefore, the volcaniclastic record is suitable for investigating medium- to long-term changes in arc geochemistry and, provided consideration is given to the potential for nonunique geochemical signatures, is suitable for erecting tephrochronological frameworks. A limited number of Pleistocene tephra correlations are suggested in furtherance of this framework goal.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Contenido: La persona y su mundo: la cultura, la moral, el derecho y la sociedad familiar y política (IV) / Octavio N. Derisi – El “De Anima” de Aristóteles / Ciro E. Schmidt Andrade ; Jorge Martínez Barrera – Notas sobre la noción de justicia política en Tomás de Aquino / Carlos I. Massini Correas – Filosofía de Iberoamérica en Alberto Caturelli / Eudaldo Forment – Algunas reflexiones sobre el concepto de persona en Juan Pablo II / Javier Fernández Aguado – Notas y comentarios -- Bibliografía

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Aprova o texto da Convenção sobre os Direitos das Pessoas com Deficiência e de seu Protocolo Facultativo, assinados em Nova York, em 30 de março de 2007.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

O Relator Bernardo Cabral (PMDB-AM) e os relatores adjuntos da Comissão de Sistematização da Assembleia Nacional Constituinte (ANC) definiram que, no anteprojeto, o sistema de governo será o parlamentarismo. O Senador Fernando Henrique Cardoso (PMDB-SP) comenta que a Constituição vai manter determinados direitos dos trabalhadores que são comuns em vários países adiantados, como a proibição de demissão imotivada. Ele espera também que seja encontrada uma formulação mais aceitável na reforma agrária e diz que o anteprojeto vai manter a existência de entidades profissionais como o SESC e SENAC. Sessão extraordinária debate a questão do voto, proporcional ou distrital. O Deputado Jutahy Junior (PMDB-BA) defende o voto proporcional e diz que o voto distrital esmaga as minorias ideológicas e partidárias. O Deputado Israel Pinheiro (PMDB-MG) acredita que o voto distrital misto é a melhor opção, porque obriga a vivência partidária no distrito, no município. O Deputado Paulo Delgado (PT-MG) pensa que o voto distrital restringe a manifestação do eleitor a áreas muito pequenas. O Deputado Carlos Benevides (PMDB-CE) é favorável ao voto proporcional porque garante a participação de representantes de minorias no processo político brasileiro e obriga o parlamentar a ter uma preocupação, não com seu distrito, mas com o país. Constituintes fazem homenagem para lembrar a perda do poeta Carlos Drumond de Andrade. O Partido dos Trabalhadores (PT) enviou um pedido solicitando que a Assembleia Nacional Constituinte (ANC) realize sessão solene para homenagear Drumond. O Deputado José Genoíno (PT-SP) diz que a manifestação é para demonstrar o significado, a grandeza da obra do artista e pela tristeza que tomou conta do povo brasileiro.