Glacial and climate history of the Polar Urals, Arctic Russia, during the last Ice Age

2012 ◽  
Vol 279-280 ◽  
pp. 478
Author(s):  
John Inge Svendsen
Keyword(s):  
Ice Age ◽  
Climate History ◽  
Polar Urals ◽  
History Of ◽  
Last Ice Age ◽  
Arctic Russia ◽  
The Polar Urals

scholarly journals Paleontology of the Bears Ears National Monument: history of exploration and designation of the monument

2018 ◽  
Author(s):  
Jessica Uglesich ◽  
Robert J Gay ◽  
M. Allison Stegner ◽  
Adam K Huttenlocker ◽  
Randall B Irmis
Keyword(s):  
Fossil Record ◽  
Landscape Scale ◽  
Ice Age ◽  
Bureau Of Land Management ◽  
National Monument ◽  
Resource Protection ◽  
History Of ◽  
Last Ice Age ◽  
Dry Climates ◽  
Cretaceous Period

Bears Ears National Monument (BENM) is a new, landscape-scale national monument jointly administered by the Bureau of Land Management and the Forest Service in southeastern Utah as part of the National Conservation Lands system. As initially designated, BENM encompasses 1.3 million acres of land with exceptionally fossiliferous rock units. These units comprise a semi-continuous depositional record from the Pennsylvanian Period through the middle of the Cretaceous Period. Additional Quaternary and Holocene deposits are known from unconsolidated river gravels and cave deposits. The fossil record from BENM provides unique insights into several important paleontological periods of time, including the Pennsylvanian-Permian transition from fully aquatic to more fully terrestrial tetrapods; the rise of the dinosaurs following the Triassic-Jurassic extinction; and the response of ecosystems in dry climates to sudden temperature increases at the end of the last ice age and across the Holocene. While the paleontological resources of BENM are extensive, they have historically been under-studied. Here we summarize prior paleontological work in BENM and review the data used to support paleontological resource protection in the 2016 BENM proclamation.

The Environmental History of the Near and Middle East since the Last Ice Age

1980 ◽  
Vol 70 (4) ◽  
pp. 481
Author(s):  
John F. Kolars ◽  
William C. Brice
Keyword(s):  
Middle East ◽  
Environmental History ◽  
Ice Age ◽  
History Of ◽  
Last Ice Age

scholarly journals Introduction

2014 ◽  
Vol 47 (2) ◽  
pp. 221-244
Author(s):  
Eli Rubin
Keyword(s):  
Early Modern ◽  
Middle Ages ◽  
Early Modern Period ◽  
Ice Age ◽  
Special Issue ◽  
Open Spaces ◽  
Modern Period ◽  
History Of ◽  
Last Ice Age ◽  
The City

The essays in this special issue all focus on the city of Berlin, in particular, its relationship with its margins and borders over thelongue dureé. The authors—Kristin Poling, Marion Gray, Barry Jackisch, and Eli Rubin—all consider the history of Berlin over the last two centuries, with special emphasis on how Berlin expanded over this time and how it encountered the open spaces surrounding it and within it—the “green fields” (grüne Wiesen) referred to in the theme title. Each of them explores a different period in Berlin's history, and so together, the essays form a long dureé history of Berlin, although each of the essays in its own way explores the roots of Berlin's history in deeper time scales, from the early modern period, to the Middle Ages, and even to the very end of the last ice age, more than 10,000 years ago.

The Quaternary history of Fuego-Patagonia

1960 ◽  
Vol 152 (949) ◽  
pp. 507-516 ◽  
Keyword(s):  
Tierra Del Fuego ◽  
Ice Age ◽  
Ice Ages ◽  
The Andes ◽  
Plant Remains ◽  
Westerly Winds ◽  
History Of ◽  
Last Ice Age ◽  
Quaternary History ◽  
Important Evidence

Tierra del Fuego and Patagonia are geographically so closely related that they can he called Fuego-Patagonia. Its two main units are the Andes and the region of the mesetas to the east of them. As a result of the predominantly westerly winds, the rainfall and the forests are concentrated in the Andes whereas in the region of the mesetas and the plains there are steppes and semideserts. The boundary between them seems to be a zone of struggle between the forest and the steppe. Its past oscillations can be studied against the background of palaeogeographic evolution especially since the last ice age. The stratigraphy of bogs and alluvial clays provides most important evidence on this topic. Tierra del Fuego is especially suitable as a study area since bogs are present all over the main island. In order to separate the ice ages with certainty, and thus to find out how many ice ages there were in Fuego-Patagonia, I looked for organic interglacial layers. Those found are the only ones so far recorded in South America. The southernmost is on the east coast of Tierra del Fuego in a till cliff facing the Atlantic Ocean, about 20 km from the Viamonte estancia (figure 26). The peat is, according to a dating at the Yale Geochronometric Laboratory, over 41000 years old. Its macro- and microscopic plant remains reflect a richer flora than the present one.

Last Glacial Maximum to near present 10Be chronology of the Universidad glacier fluctuations in the Subtropical Chilean Andes (34° S): paleoclimate implications  

2021 ◽  
Author(s):  
Hans Fernández ◽  
Juan-Luis García ◽  
Samuel U. Nussbaumer ◽  
Alessa Geiger ◽  
Isabelle Gärtner-Roer ◽  
...  
Keyword(s):  
Last Glacial Maximum ◽  
Late Glacial ◽  
Glacial Maximum ◽  
Ice Age ◽  
Climate History ◽  
Last Glacial ◽  
Exposure Dating ◽  
Glacier Fluctuations ◽  
History Of ◽  
The Last Glacial

<p>The geochronological and geomorphological reconstruction of glacier fluctuations is required to assess the timing and structure of climate changes of the last glacial cycle in the subtropical Andes of Chile. The scarcity of data in this region limits the knowledge related to the timing of glacial landscape changes during this long-term period. To provide a new framework to better understand the climate history of the semiarid Andes of Chile, we have reconstructed the glacial history of the Universidad glacier (34° S).</p><p>Our mapping shows the existence of four moraine belts (UNI I to UNI IV, from outer to inner) that are spatially unequally distributed along the 13 km of the valley between ~2500 and ~1400 m a.s.l. We applied <sup>10</sup>Be cosmogenic surface exposure dating to 26 granodioritic boulders on moraines and determined the age of the associated glacial advances. UNI I moraine represents the distal glacier advance between 20.8±0.8 and 17.8±0.8 kyr ago (number of <sup>10</sup>Be samples = 11). Other two significative glacier advances terminated one and four km up-valley from the UNI I moraine, respectively, formed 16.1±0.9 kyr (n=1) (UNI II) and 14.6±1 to 10±0.5 kyr ago (n=3) (UNI III). A sequence of six distinct and smaller moraine ridges has been identified in the proglacial area. They are part of last significative glacier advances labeled as UNI IV. The four distal ridges have been dated to between 645-150 years ago (n=11), while the most proximal moraines coincide with mid-20<sup>th</sup> century and 1997 aerial photographs.</p><p>The results indicate that the Universidad glacier advanced during the Last Glacial Maximum (LGM) (UNI I). Deglaciation was punctuated by glacier readvances during the Late Glacial when the UNI II and UNI III moraines were deposited. Finally, UNI IV moraine shows six glacier fluctuations developed between the 14th and 20<sup>th</sup> centuries.</p><p>Our data suggest that the glacier advances by the Universidad glacier were triggered by intensified southern westerly winds bringing colder and wetter conditions to subtropical latitudes in the SE Pacific. Moreover, our data indicate that more or less in-phase Late-Glacial advances along the tropical and extratropical Andes occurred. We discuss different climate forcings that explain these glacier changes. Finally, we illustrate the influence of the “Little Ice Age” in the Semiarid Andes.</p>

scholarly journals Climate history of the principality of Transylvania during the Maunder Minimum (MM) years (1645–1715 CE)

2021 ◽  
Author(s):  
Martin Stangl ◽  
Ulrich Foelsche
Keyword(s):  
Solar Activity ◽  
Ice Cores ◽  
Maunder Minimum ◽  
Ice Age ◽  
Climate History ◽  
History Of ◽  
Solar Influence ◽  
First Time ◽  
Good Agreement

Abstract. This paper deals with the climate in the former Grand Duchy of Transylvania, now one of the three major geographical provinces of Romania, within the so-called Maunder Minimum (MM) (1645–1715), an astrophysically defined part of the Little Ice Age (LIA), which was characterized by reduced solar activity. The historical data from Transylvania are compared with that from Germany, Austria and Switzerland. This comparison for the period 1645–1715 shows good agreement but also reveals geographic characteristics of the region. For the first time, we present here a comparison between the four geographic areas in text and tabular form. Quotes from mostly German-language sources are reproduced in English translation. Furthermore, we examine for a longer period (1500–1950) the extent to which the climate of Transylvania might have been affected by long-term fluctuations in solar activity, as deduced from isotopic reconstructions from ice cores. This comparison suggests a certain solar influence but the agreement is not very pronounced. Future investigation in a pan-European context is needed to reach reliable statements. Some results are unexpected – like an unusually small number of severe winters during the last decades of the MM, where extreme cold was restricted to a few years, like the extreme winters 1699/1700 and 1708/1709.

Cave Archaeology and Palaeontology in the Creswell Region

2007 ◽  
Author(s):  
Andrew T. Chamberlain
Keyword(s):  
Ice Age ◽  
Upper Permian ◽  
The North ◽  
Cave Archaeology ◽  
History Of ◽  
The North Sea ◽  
Last Ice Age ◽  
North And South ◽  
Heritage Area ◽  
Carboniferous Limestone

The aim of this chapter is to situate the unique discoveries of cave art at the Creswell Crags caves in the context of what is known of the cave archaeology and palaeontology of the caves of the southern Magnesian Limestone outcrop. The long history of archaeological research at Creswell Crags and the spectacular discoveries that continue to be made in the Creswell caves have tended to overshadow the widespread though less prominent distribution of cave archaeological sites along the limestone outcrop to the north and south of Creswell, a region known as the Creswell Crags Limestone Heritage Area (Mills 2001). Recent audits of the archaeology of the region have drawn attention to the large number of cave sites within the Limestone Heritage Area as well as the considerable potential that these sites have for further research into the history of Ice Age people and their environments (Mills 2001; Davies et al. 2004).While the focus of this chapter is on the Pleistocene deposits and Palaeolithic artefacts that have been preserved in the region’s caves, fissures, and rock shelters, these sites were used throughout prehistory by humans and animals and they contain much important cultural and environmental evidence for these later time periods after the end of the last Ice Age. Creswell Crags is located in the southern part of the Magnesian Limestone, a geological term for deposits of Upper Permian age that includes a series of formations of well-bedded oolitic to dolomitic limestones. The Magnesian Limestone forms a narrow north–south oriented outcrop that runs from near Nottingham in the south to the North Sea coast near Tynemouth in the north (Fig. 6.1). About 30 km to the west of the southern part of the Magnesian Limestone is the older Carboniferous Limestone outcrop of the White Peak, which, like the Magnesian Limestone, contains many archaeological caves. The southern part of the Magnesian Limestone outcrop, between Doncaster and Mansfield, is cut through by a series of vales and gorges which expose caves, fissures, and rockshelters along the cliff lines.

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