33,385 research outputs found
Data for: PROVENANCE OF CRETACEOUS SANDSTONES IN THE BANDA ARC AND THEIR TECTONIC SIGNIFICANCE
No full textThe provenance of Cretaceous sandstones in the Banda Arc islands differs from west to east. Sandstones in Sumba and West Timor contain significant amounts of feldspar (K-feldspar and plagioclase) and lithic fragments, suggesting a recycled to magmatic arc origin. In comparison, East Timor and Tanimbar sandstones are quartz rich, and suggest a recycled origin and/or continental affinity. Heavy mineral assemblages in Sumba and West Timor indicate metamorphic and minor acidic igneous sources and include a mixture of rounded and angular zircon and tourmaline grains. In East Timor, Babar and Tanimbar, an ultimate origin from a mainly acid igneous and minor metamorphic source is interpreted, containing a mixture of rounded and angular zircon and tourmaline grains.Detrital zircon ages in all sandstones range from Archean to Mesozoic, but variations in age populations indicate local differences in source areas. Sumba and West Timor are characterised by zircon age peaks at 80-100 Ma, 200-240 Ma, 550 Ma, 1.2 Ga, 1.5 Ga and 1.8 Ma. East Timor and Tanimbar contain 80-100 Ma, 160-200 Ma, 240-280 Ma, 550 Ma and 1.5 Ga zircon peaks. Most populations are also common in Triassic and Jurassic formations along the Outer Banda Arc and in many other areas of SE Asia. However, the abundance of Jurassic and Cretaceous populations was unexpected. We interpret Cretaceous sandstones from Sumba, Timor and Tanimbar to have been deposited in SE Sundaland. Syn-sedimentary Cretaceous (68-140 Ma) sources are suggested to include the Schwaner Mountains in SW Borneo and Sumba. Material derived mainly from older recycled sediments that had their main sources in the Bird’s Head, Western and Central Australia, and local sources close to Timor
Provenance of Lower Cambrian rocks in Northern Spain – U-Pb isotope ages on detrital zircons in different lithofacies
Get PDFThe Herrería Formation with a Lower Cambrian depositional age exposed in the Cantabrian Mountains of northern Spain is the focus of this study. The motivation of this study is related to recognized significant provenance changes between the base of the formation and the top, which would have allowed fundamentally different provenance interpretations (Zimmermann, et al., 2015). Therefore, this study concentrates on a similar lithotype (quartz-arenites), which show a variety of differing sedimentary structures pointing to different sedimentary processes including sorting. The quartz-arenites are intercalated with shales devoid of carbonate material. The recognition of acritarchs pinpoints a marine depositional environment. The youngest detrital zircon age of the Herreria Formation is 524 ± 3Ma (Zimmermann, et al., 2015). Total of four samples were collected and to identify the differences and similarities of the provenance signals of these clastic sedimentary rocks, we apply optical petrography and whole-rock geochemistry, detrital zircon age. The results indicate that: All four lithotypes point to different possible maximum depositional age ranging from 549 Ma to 581 Ma with 32 Ma in difference and even more when comparing to the previous study (Zimmermann, et al., 2015). Although the rocks are supposed to be deposited in the same tectonic event, all samples fail to provide any younger depositional age than around 560 Ma. The detrital zircon population seem to differ between arenites and quartz-arenites where the latter see to reflect a more complete population. Therefore, studies with detrital zircon populations should be treated with great caution before being interpreted in stratigraphic context. Even with the large variety of different lithofacies sampled in this study it could not reflect the real Paleozoic depositional age, with an error of about 10 %. For the maximum depositional age determination, the base of the Herrería Formation would be the most ideal one studied, but not when trying to gain the entire provenance. I would argue for only using detrital zircon data with a detailed sedimentological background in addition to a known geological substructure
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Comprehensive identification of Arabidopsis thaliana MYB transcription factors interacting with R/B-like BHLH proteins
Get PDFZimmermann IM, Heim MA, Weisshaar B, Uhrig JF. Comprehensive identification of Arabidopsis thaliana MYB transcription factors interacting with R/B-like BHLH proteins. The Plant Journal. 2004;40(1):22-34
Myoxus Zimmermann 1780
No full textMyoxus Zimmermann, 1780. Geogr. Gesch. Mensch. Vierf. Thiere, 2:351. REVIEWED BY: M. Andera (MA); O. L. Rossolimo (OLR) (U.S. S.R.); G. A. Sidorowicz (GAS); G. Storch (GS). COMMENT: The Brisson, 1762, name Glis is invalid, thus the name Myoxus applies. ISIS NUMBER: 5301410012004000000 as Glis.Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 6), pp. 560-594 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 562, DOI: 10.5281/zenodo.735303
Postfazione
No full textLe Morali influenze della solitudine sopra lo spirito ed il cuore di Johann Georg Zimmernann (1728-1795) sono uno dei testi di riferimento canonico nella discussione sui benefici e i danni della solitudine che si svolge nella cultura europea a partire dalla metà del Settecento. Nella linea di quei ‘medici filosofi’ autori di un capitolo importante dell’antropologia illuministica, Zimmermann colloca al centro della sua speculazione le interazioni fra vita del corpo e rappresentazioni mentali. Il ritiro dalle cure e dagli obblighi della vita associata implica non il rifugio in una dimensione antisociale ed egoistica, ma un’astensione temporanea dalla socievolezza, con l’obiettivo di restituire all’uomo la piena sovranità su se stesso, messa a rischio dalla radicalità dei fenomeni di modernizzazione che segnano il superamento dell’orizzonte feudale. La traduzione di Carlo Villa, che si basa su un compendio in lingua francese, crea a partire dal 1819 anche in Italia le basi per una diffusa ricezione del trattato di Zimmermann
Focus asymmetries in Bura
No full textThis article presents the central aspects of the focus system of Bura (Chadic), which exhibits a number of asymmetries: Grammatical focus marking is obligatory only with focused subjects, where focus is marked by the particle án following the subject. Focused subjects remain in situ and the complement of án is a regular VP. With nonsubject foci, án appears in a cleft-structure between the fronted focus constituent and a relative clause. We present a semantically unified analysis of focus marking in Bura that treats the particle as a focusmarking copula in T that takes a property-denoting expression (the background) and an individual-denoting expression (the focus) as arguments. The article also investigates the realization of predicate and polarity focus, which are almost never marked. The upshot of the discussion is that Bura shares many characteristic traits of focus marking with other Chadic languages, but it crucially differs in exhibiting a structural difference in the marking of focus on subjects and non-subject constituents
Postfazione
No full textLe Morali influenze della solitudine sopra lo spirito ed il cuore di Johann Georg Zimmernann (1728-1795) sono uno dei testi di riferimento canonico nella discussione sui benefici e i danni della solitudine che si svolge nella cultura europea a partire dalla metà del Settecento. Nella linea di quei ‘medici filosofi’ autori di un capitolo importante dell’antropologia illuministica, Zimmermann colloca al centro della sua speculazione le interazioni fra vita del corpo e rappresentazioni mentali. Il ritiro dalle cure e dagli obblighi della vita associata implica non il rifugio in una dimensione antisociale ed egoistica, ma un’astensione temporanea dalla socievolezza, con l’obiettivo di restituire all’uomo la piena sovranità su se stesso, messa a rischio dalla radicalità dei fenomeni di modernizzazione che segnano il superamento dell’orizzonte feudale. La traduzione di Carlo Villa, che si basa su un compendio in lingua francese, crea a partire dal 1819 anche in Italia le basi per una diffusa ricezione del trattato di Zimmermann
Full body low radiation radiography using Lodox Statscan
No full textLodox Statscan provides high-speed, high-quality, low radiation, full body imaging in a single scan, combined with three-dimensional reconstructive and zooming functionality. Several trauma centres have incorporated it into their advanced trauma life support protocol. This review gives a brief overview of the system
Exploring Emptiness: An Investigation of MA and MU in My Sonic Composition Practice
No full textThe commentary investigates Japanese aesthetics of space, silence and emptiness - ma and mu - that informed my compositional practice during the research period 2012 - 2015. The portfolio comprises text compositions and sound installations in which forms of micro events and sustained events are employed. Throughout, the emphasis is on my personal engagement with, and manifestation of emptiness that concerns a particular model of listening and perception.
Chapter 1 discusses six primary research areas: ma and mu, material, text, form, listening and perception. Firstly, I introduce ma and mu by examining noh culture and Zeami's teaching of senu hima (where there is no-action) in the context of my personal approaches to music. The following subjects are then used to contextualise my PhD practice by means of examples from various composers and visual artists. Here, these particular and enigmatic concepts are explored through Japanese art as well as Western contemporary works by Alvin Lucier, Eliane Radigue and those of the Wandelweiser collective.
Part 2 provides contextual commentaries on selected compositions from the portfolio that mostly articulate my aesthetics in relation to the topics covered in Chapter 1. koso koso addresses my methodologies to investigate the essence of senu hima, followed by treow that discusses my approach to materials and the importance of space. I move on to grade two and grade two extended in order to examine text scores, and then, look into Espèces d'espaces 03 and 04 as examples of musical forms that I employ.
Finally, listening and perception are investigated through the compositions gnome and con.de.structuring. Throughout, I describe how my works explore emptiness as a result of my particular emphasis on listening over composing
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