THE SIZES OF LAKES IN THE ANCIENT RECORD OF IZUMO PROVINCE

Author(s):  
Kaoru YOSHIDA
Keyword(s):  
1996 ◽  
Vol 36 (312) ◽  
pp. 300-314 ◽  
Author(s):  
Vladimir Pustogarov

In the history of humankind, no matter how far back we look into the past, peaceful relations between people and nations have always been the ideal, and yet this history abounds in wars and bloodshed. The documentary evidence, oral tradition and the mute testimony of archaeological sites tell an incontrovertible tale of man's cruelty and violence against his fellow man. Nevertheless, manifestations of compassion, mercy and mutual aid have a no less ancient record. Peace and war, goodneighbourly attitudes and aggression, brutality and humanity exist side by side in the contemporary world as well.


Geology ◽  
2018 ◽  
Vol 46 (10) ◽  
pp. 875-878 ◽  
Author(s):  
J. Taylor Perron ◽  
Paul M. Myrow ◽  
Kimberly L. Huppert ◽  
Abigail R. Koss ◽  
Andrew D. Wickert
Keyword(s):  

Geology ◽  
2020 ◽  
Vol 48 (4) ◽  
pp. 338-342
Author(s):  
Manuel F. Isla ◽  
Ernesto Schwarz ◽  
Gonzalo D. Veiga

Abstract The morphology of wave-dominated clastic shorelines (i.e., foreshore and upper-shoreface sediments) can vary from barred to nonbarred, though the ancient record of nonbarred, sand-dominated shorelines has yet to be recognized. Here, a facies and quantitative architectural analysis of a clastic succession characterized by sandy inclined beds is presented and interpreted as the record of a high-gradient, nonbarred shoreline. Inclined beds dip seaward, have a tangential geometry (<3 m height, <40 m length, <11° dip), and are composed of planar lamination along the foresets and subordinate small-scale trough cross-bedding in the bottomsets. This facies distribution reflects a steep beach profile with a narrow surf zone and the development of plane beds both in foreshore and proximal upper-shoreface settings. Successive packages of inclined beds (a few tens of meters wide) are interpreted as the seaward accretion of this shoreline morphology, producing distinctive architectural elements (foresets and bottomsets). For the first time, we propose diagnostic criteria for identification in the rock record of the widely used modern nonbarred clastic shoreline model, and we contrast them with classical facies models of barred systems. Moreover, we discuss similarities and differences with radar-based Holocene coastal architectural elements, highlighting the need to incorporate detailed two-dimensional quantitative studies for refining the reconstruction of deep-time and recent clastic shorelines.


2021 ◽  
Author(s):  
◽  
Claire Andrea Storkey

<p><b>Prydz Bay Antarctica is an embayment situated at the ocean-ward end of the LambertGlacier/Amery Ice Shelf complex East Antarctica. This study aims to document thepalynological assemblages of 58 surface sediment samples from Prydz Bay, and tocompare these assemblages with ancient palynomorph assemblages recovered fromstrata sampled by drilling projects in and around the bay.</b></p> <p>Since the early Oligocene, terrestrial and marine sediments from the Lambert Grabenand the inner shelf areas in Prydz Bay have been the target of significant glacialerosion. Repeated ice shelf advances towards the edge of the continental shelfredistributed these sediments, reworking them into the outer shelf and Prydz ChannelFan. These areas consist mostly of reworked sediments, and grain size analysisshows that finer sediments are found in the deeper parts of the inner shelf and thedeepest areas on the Prydz Channel Fan. Circulation within Prydz Bay is dominatedby a clockwise rotating gyre which, together with coastal currents and ice bergploughing modifies the sediments of the bay, resulting in the winnowing out of thefiner component of the sediment.</p> <p>Glacial erosion and reworking of sediments has created four differing environments(Prydz Channel Fan, North Shelf, Mid Shelf and Coastal areas) in Prydz Bay whichis reflected in the palynomorph distribution. Assemblages consist of Holocenepalynomorphs recovered mostly from the Mid Shelf and Coastal areas and reworkedpalynomorphs recovered mostly from the North Shelf and Prydz Channel Fan. Thepercentage of gravel to marine palynomorph and pollen counts show a relationshipwhich may reflect a similar source from glacially derived debris but the percentageof mud to marine palynomorph and pollen counts has no relationship.</p> <p>Reworked palynomorphs consist of Permian to Eocene spores and pollen and Eocenedinocysts which are part of the Transantarctic Flora. Holocene components are avaried assemblage of acritarchs, dinoflagellate cysts (dinocysts), prasinophyte algae,red algae and large numbers of Zooplankton sp. and foraminifera linings. In situdinocysts are dominated by the heterotroph form Selenopemphix antarctica and none of the Holocene dinocyst species found in Prydz Bay have been recorded in theArctic. In contrast acritarchs, prasinophytes and red algae are all found in the Arcticand reflect a low salinity and glacial meltwater environment. Comparison withmodern surface samples from the Arctic and Southern Ocean show there is a strongcorrelation to reduction in the autotroph:heterotroph dinocyst ratio with increasinglatitude.</p> <p>Todays assemblage of marine palynomorphs are more complex than those recordedin ancient assemblages and there is a lower level of reworked material. Acritarchs(Leiosphaeridia spp. Sigmopollis sp.) and prasinophytes (Cymatiosphaera spp.</p> <p>Pterospermella spp. Tasmanites spp.) are recorded in the ancient record in Antarcticaas well as surface sediments in Prydz Bay, but there are very low numbers ofLeiosphaeridia spp. and Sigmopollis spp. present today in comparison to the ancientrecord. Dinocysts in situ and recovered in Prydz Bay are endemic to the Antarcticbut have not been recorded in the ancient record.</p>


Author(s):  
Sheila Murnaghan ◽  
Deborah H. Roberts

This chapter considers the strategies used to make history texts and works of historical fiction set in antiquity appealing to girl readers of the first half of the twentieth century, who were increasingly exposed to books with active girl heroines. Despite the severe constraints on ancient women and girls, such writers as Dorothy Mills, Caroline Dale Snedeker, Erick Berry, and Naomi Mitchison contrive to provide their readers with independent, resourceful ancient counterparts. They achieve this by filling in the silences of the ancient record, setting their stories on the spatial and temporal margins of the classical world, and devising plots in which girls act in the place of absent or inadequate brothers.


1990 ◽  
Vol 84 (1-4) ◽  
pp. 190-191
Author(s):  
J.A. McKenzie
Keyword(s):  

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1024
Author(s):  
Ludivina Barrientos-Lozano ◽  
Hojun Song ◽  
Aurora Y. Rocha-Sánchez ◽  
Jorge Ariel Torres-Castillo

The Central American locust (CAL), Schistocerca piceifrons piceifrons (Walker, 1870), is a transboundary pest that is distributed from Mexico to Panama. It is a true locust species characterized by density-dependent phase polyphenism. The ancient record of the CAL is found in the Popol Vuh, the Mayan sacred book, demonstrating how it has affected humans for millennia. In Mexico, the CAL have been declared a national threat to agriculture since 1824. Serious locust plagues occurred in 1882–1883 when swarms of 20 km2 in size invaded the Yucatán Peninsula and neighboring states in southern Mexico and, since then, management actions to suppress populations and economic damage have been implemented. A better understanding of the biology, ecology, and behavior of the CAL replaced a manual and mechanical collection of locust swarms, hopper bands, and egg pods with modern techniques such as the use of safer chemical products and environmentally friendly bioinsecticides. Presently, biomodels and GIS support the monitoring and forecasting of outbreaks. Currently, studies are conducted to investigate environmental factors that trigger locust gregarization, the evolution of phase polyphenism, and CAL bioactive compounds and nutritional contents, envisioning its potential use in biotechnological industries. Findings will be crucial to improve the management strategies of the CAL.


2021 ◽  
Vol 4 (2) ◽  
pp. 134-159
Author(s):  
Philip Sapirstein

As 3D scanning and photogrammetry are supplanting traditional illustration techniques with increasing speed, archaeologists and architectural historians have sounded alarms about what stands to be lost if hand drawing is altogether eliminated from fieldwork. This paper argues that the most direct threat is to a particular form of archaeological illustration which does not necessarily share the advantages attributed to other kinds of drawing. Recording by means of “technical drawing” communicates a collectively agreed interpretation of the ancient record, and its primary benefit is not stimulating creative thought but rather enhancing human observation. A review of two cases comparing the illustration of ancient Greek architecture through analogue and digital methods indicates that, in practice, both approaches draw attention away from the ancient subject and focus it on distracting protocols for the great majority of the time spent in the field. Even so, technical drawing requires protracted, in-person scrutiny of the subject, whereas 3D technologies pose a genuine risk of altogether eliminating meaningful human interpretation from the recording process. The greater efficiencies of digital techniques suggest a path forward, as time once allocated to tedious stages of technical drawing might be applied toward more thoughtful interpretive tasks. However, such measures must be deliberately integrated into a digital research program through planning around the very different cadences of the digital process.


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