scholarly journals Supplemental Material: History of the Larsen C Ice Shelf reconstructed from sub–ice shelf and offshore sediments

2021 ◽  
Author(s):  
James A Smith ◽  
et al.

Figures S1–S4 (RPI data), Figures S5–S6 (14C and 210Pb data), Table S1 (rock magnetic parameters), Tables S2–S3 (radiocarbon dates), chronology, sedimentological methods, and supplemental references.<br>

2021 ◽  
Author(s):  
James A Smith ◽  
et al.

Figures S1–S4 (RPI data), Figures S5–S6 (14C and 210Pb data), Table S1 (rock magnetic parameters), Tables S2–S3 (radiocarbon dates), chronology, sedimentological methods, and supplemental references.<br>


1990 ◽  
Vol 33 (3) ◽  
pp. 265-275 ◽  
Author(s):  
Margaret J. Herron ◽  
John B. Anderson

AbstractPiston cores from the South Orkney Plateau penetrated overcompacted diamictons in water depths of up to 250 m. Detailed textural and petrological analyses of these diamictons indicate that they are basal tills. Seismic records from the plateau show a widespread surface of glacial erosion and provide additional evidence of an ice cap grounded to a depth of 250 m. Piston cores from the slope of the plateau penetrated diatomaceous muds resting directly on poorly sorted muds with very little to no biogenic material. The ice-rafted debris in these glacial-marine sediments is composed almost exclusively of material derived from the South Orkney Islands. This implies deposition beneath an ice shelf as opposed to iceberg rafting. In contrast, diatomaceous muds contain relatively abundant exotic iceberg-rafted material and reflect a glacial-maritime setting similar to that of today. The sharp contact separating diatomaceous surface sediments from basal tills and sub-ice shelf deposits indicates that the ice cap and ice shelf retreated from the plateau rapidly. Radiocarbon dates for diatomaceous muds from a glacial trough on the plateau indicate that the ice cap and ice shelf retreated from the plateau prior to 6000 to 7000 years ago. The homogeneity of surficial diatomaceous sediments suggests that sea ice conditions over the plateau have not changed radically since that time.


1987 ◽  
Vol 24 (4) ◽  
pp. 591-601 ◽  
Author(s):  
Arthur S. Dyke

Seven new radiocarbon dates pertaining to deglaciation of northern Prince of Wales Island place the margin of the Laurentide Ice Sheet on the island by 11 000 BP. This requires a revision of the proposed age for the Viscount Melville Sound Ice Shelf of 10 300 – 9880 BP. A revised age of 11 300 – 11 000 BP is suggested.The new dates also require revisions of the proposed Wisconsinan and Holocene history of Banks Island. Shells thought to have been thrust onshore to an elevation of 88 m by the ice shelf on northern Banks Island after 10 600 BP are reinterpreted as undisturbed postglacial marine shells recording a relative sea level of 88 m or more. This, in turn, suggests that the East Coast Sea and Jesse Till are of Late Wisconsinan rather than Early Wisconsinan age and that the Late Wisconsinan glacial limit on Banks Island as figured on the 1968 Glacial Map of Canada, rather than on recent revisions, is essentially correct.


Author(s):  
Usha Iyer

Dancing Women: Choreographing Corporeal Histories of Hindi Cinema, an ambitious study of two of South Asia’s most popular cultural forms—cinema and dance—historicizes and theorizes the material and cultural production of film dance, a staple attraction of popular Hindi cinema. It explores how the dynamic figurations of the body wrought by cinematic dance forms from the 1930s to the 1990s produce unique constructions of gender, stardom, and spectacle. By charting discursive shifts through figurations of dancer-actresses, their publicly performed movements, private training, and the cinematic and extra-diegetic narratives woven around their dancing bodies, the book considers the “women’s question” via new mobilities corpo-realized by dancing women. Some of the central figures animating this corporeal history are Azurie, Sadhona Bose, Vyjayanthimala, Helen, Waheeda Rehman, Madhuri Dixit, and Saroj Khan, whose performance histories fold and intersect with those of other dancing women, including devadasis and tawaifs, Eurasian actresses, oriental dancers, vamps, choreographers, and backup dancers. Through a material history of the labor of producing on-screen dance, theoretical frameworks that emphasize collaboration, such as the “choreomusicking body” and “dance musicalization,” aesthetic approaches to embodiment drawing on treatises like the Natya Sastra and the Abhinaya Darpana, and formal analyses of cine-choreographic “techno-spectacles,” Dancing Women offers a variegated, textured history of cinema, dance, and music. Tracing the gestural genealogies of film dance produces a very different narrative of Bombay cinema, and indeed of South Asian cultural modernities, by way of a corporeal history co-choreographed by a network of remarkable dancing women.


Author(s):  
Chris Keith

This book offers a new material history of the Jesus tradition. It shows that the introduction of manuscripts to the transmission of the Jesus tradition played an underappreciated but crucial role in the reception history of the tradition that eventuated. It focuses particularly on the competitive textualization of the Jesus tradition, whereby Gospel authors drew attention to the written nature of their tradition, sometimes in attempts to assert superiority to predecessors, and the public reading of the Jesus tradition. Both these processes reveal efforts on the part of early followers of Jesus to place the gospel-as-manuscript on display, whether in the literary tradition or in the assembly. Building upon interdisciplinary work on ancient book cultures, this book traces an early history of the gospel as artifact from the textualization of Mark in the first century until the eventual usage of liturgical reading as a marker of authoritative status in the second and third centuries and beyond. Overall, it reveals a vibrant period of the development of the Jesus tradition, wherein the material status of the tradition frequently played as important a role as the ideas about Jesus that it contained.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Aurélie Salavert ◽  
Antoine Zazzo ◽  
Lucie Martin ◽  
Ferran Antolín ◽  
Caroline Gauthier ◽  
...  

AbstractThis paper aims to define the first chrono-cultural framework on the domestication and early diffusion of the opium poppy using small-sized botanical remains from archaeological sites, opening the way to directly date minute short-lived botanical samples. We produced the initial set of radiocarbon dates directly from the opium poppy remains of eleven Neolithic sites (5900–3500 cal BCE) in the central and western Mediterranean, northwestern temperate Europe, and the western Alps. When possible, we also dated the macrobotanical remains originating from the same sediment sample. In total, 22 samples were taken into account, including 12 dates directly obtained from opium poppy remains. The radiocarbon chronology ranges from 5622 to 4050 cal BCE. The results show that opium poppy is present from at least the middle of the sixth millennium in the Mediterranean, where it possibly grew naturally and was cultivated by pioneer Neolithic communities. Its dispersal outside of its native area was early, being found west of the Rhine in 5300–5200 cal BCE. It was introduced to the western Alps around 5000–4800 cal BCE, becoming widespread from the second half of the fifth millennium. This research evidences different rhythms in the introduction of opium poppy in western Europe.


Radiocarbon ◽  
2021 ◽  
pp. 1-21
Author(s):  
Dorota Dzierzbicka ◽  
Katarzyna Danys

ABSTRACT The paper presents and discusses a series of radiocarbon (14C) dates from a medieval Nubian monastery found on Kom H of Old Dongola, the capital of the kingdom of Makuria located in modern-day Sudan. The monastery was founded in the 6th–7th century AD and although it probably ceased to function in the 14th century, the site remained occupied until the beginning of the 15th century. The investigated courtyard of the monastery was in use from the 11th to the 14th century, as indicated by the ceramics and 14C analysis results presented here. The dates under consideration are the first published series of 14C dates from this site, which is of crucial importance for historical research on medieval Nubian Christianity and monasticism. They permit to begin building an absolute chronological framework for research on the archaeological finds from the site and region. A group of finds in particular need of such a framework are ceramics, and the implications of the 14C dates for pottery assemblages found in the dated contexts are discussed. The conclusions summarize the significance of the datings for the history of the site.


2007 ◽  
Vol 20 (1) ◽  
pp. 69-87 ◽  
Author(s):  
David C. Heroy ◽  
Charlotte Sjunneskog ◽  
John B. Anderson

AbstractWe present the first study from the Bransfield Basin that extends through the Holocene, recording the variable climate history back to the decoupling of the ice sheet from the continental shelf ~10 650 calendar years before present (cal yr bp). Detailed sediment analysis reveals three stratigraphic units in PC-61 concomitant with three sedimentary environments, similar to sedimentary facies reported elsewhere: 1) subglacial, 2) glacial proximal/sub-ice shelf, and 3) open marine. These interpretations are based on a variety of sedimentological criteria, supported by ten AMS radiocarbon dates and detailed diatom analysis. We note two significant volcanic ash layers (tephra) at 3870 and 5500 cal yr bp from nearby Deception Island. Based on diatom assemblage analysis, we identify five separate climate regimes, highlighting a significantly shorter Mid-Holocene Climatic Optimum than reported by other studies (6800–5900 cal yr bp). This period is marked by the highest Eucampia antarctica var. antarctica and Fragilariopsis curta abundance, total diatom abundance, sediment accumulation rates, and low magnetic susceptibility. We also identify a less pronounced Neoglacial period relative to other studies, which includes an increase of Cocconeis/Rhizosolenia spp. assemblage related to unstable surface water conditions. Such observations probably reflect important regional variations in atmospheric or ocean circulation patterns.


Nature ◽  
1979 ◽  
Vol 282 (5740) ◽  
pp. 703-705 ◽  
Author(s):  
Douglas R. MacAyeal ◽  
Robert H. Thomas
Keyword(s):  

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