scholarly journals Variable intensity of teleconnections during the late Holocene in subtropical North America from an isotopic study of speleothem from Florida

2007 ◽  
Vol 34 (18) ◽  
Author(s):  
Philip E. van Beynen ◽  
Yemane Asmerom ◽  
Victor Polyak ◽  
Limaris Soto ◽  
Jason S. Polk
Keyword(s):  
North America ◽  
Late Holocene ◽  
Isotopic Study ◽  
Variable Intensity

Power, security, and exchange: Impacts of a Late Holocene volcanic eruption in Subarctic North America

2021 ◽  
pp. 019769312098682
Author(s):  
Todd J Kristensen ◽  
John W Ives ◽  
Kisha Supernant
Keyword(s):  
North America ◽  
Social Relationships ◽  
Cultural Change ◽  
Volcanic Eruption ◽  
Late Holocene ◽  
River Basins ◽  
Adaptive Responses ◽  
Major Event ◽  
Hunter Gatherers ◽  
Bow And Arrow

We synthesize environmental and cultural change following a volcanic eruption at A.D. 846–848 in Subarctic North America to demonstrate how social relationships shaped responses to natural disasters. Ethnohistoric accounts and archaeometric studies reveal differences in human adaptations in the Yukon and Mackenzie river basins that relate to exertions of power over contested resources versus affordances of security to intercept dispersed migrating animals. The ways that pre-contact hunter-gatherers maintained or redressed ecological imbalances influenced respective trajectories of resilience to a major event. Adaptive responses to a volcanic eruption affected the movement of bow and arrow technology and the proliferation of copper use in northwest North America.

Cultural macroevolution in the middle to late Holocene Arctic of east Siberia and north America

2022 ◽  
Vol 65 ◽  
pp. 101388
Author(s):  
Anna Marie Prentiss ◽  
Matthew J. Walsh ◽  
Erik Gjesfjeld ◽  
Megan Denis ◽  
Thomas A. Foor
Keyword(s):  
North America ◽  
Late Holocene ◽  
East Siberia

Spatiotemporal Variation in ΔR on the West Coast of North America in the Late Holocene: Implications for Dating the Shells of Marine Mollusks

2020 ◽  
Vol 85 (4) ◽  
pp. 676-693
Author(s):  
Ian Hutchinson
Keyword(s):  
North America ◽  
West Coast ◽  
Late Holocene ◽  
Southern Oscillation ◽  
Tidal Energy ◽  
Spatiotemporal Resolution ◽  
The West ◽  
Summer Maximum ◽  
High Alkalinity ◽  
High Degree

Radiocarbon ages on mollusk shells, which account for about half of the more than 8,000 dates from cultural deposits on the west coast of North America, need to be corrected for the local marine reservoir effect (ΔR) to yield true ages. Assays on “prebomb” shells show that ΔR increases poleward, echoing the age gradient in offshore waters. The meridional gradient in ΔR is not appreciably affected by the transition either from an upwelling regime to a downwelling regime north of 40°N–45°N or from a winter maximum-high alkalinity river discharge pattern to a summer maximum-low alkalinity pattern at the same latitude, probably because these changes are offset by increasing storminess and tidal energy in coastal areas. Mesoscale variations in ΔR along this gradient are attributable to contrasts in shore morphology and exposure. Data from 123 shell-wood pairs reveal similar patterns of temporal variation in ΔR in the late Holocene in the coastal ecoregions. The characteristic temporal pattern echoes phases of variable El Niño-Southern Oscillation (ENSO) activity. The high degree of variability in ΔR argues against the indiscriminate application of regionally uniform or trans-Holocene ΔR values and demands improvements in spatiotemporal resolution if shell is used to date cultural deposits.

scholarly journals A mid to late Holocene cryptotephra framework from eastern North America

2016 ◽  
Vol 132 ◽  
pp. 101-113 ◽  
Author(s):  
Helen Mackay ◽  
Paul D.M. Hughes ◽  
Britta J.L. Jensen ◽  
Pete G. Langdon ◽  
Sean D.F. Pyne-O'Donnell ◽  
...  
Keyword(s):  
North America ◽  
Late Holocene ◽  
Eastern North America

Dietary Transition in Late Holocene Eastern North America

2016 ◽  
Author(s):  
Clark Spencer Larsen
Keyword(s):  
North America ◽  
Late Holocene ◽  
Temporal Trends ◽  
Essential Element ◽  
Poor Quality ◽  
Craniofacial Morphology ◽  
Eastern North America ◽  
Surface Wear ◽  
Dietary Transition ◽  
Growth Disruption

This chapter presents an overview of the record of reconstructing and interpreting diet from the study of craniofacial morphology and teeth, especially as the orofacial record pertains to masticatory function, nutritional quality, and health. This record is an essential element of the study of diet as it is represented in the archaeological past. Analysis of the orofacial skeleton from eastern North America reveals temporal trends relating to or arising from the introduction and intensification of farming based on plant cultigens, especially maize. These trends are characterized as including (1) reduction of facial robusticity and occlusal surface wear; (2) increase in growth disruption owing to poor-quality nutrition; and (3) increased prevalence of dental caries and related pathology caused by focus on plant carbohydrates.

The impact of air mass circulation dynamics on Late Holocene paleoclimate in northwestern North America

2003 ◽  
Vol 108 (1) ◽  
pp. 77-83 ◽  
Author(s):  
I.S Spooner ◽  
S Barnes ◽  
K.B Baltzer ◽  
R Raeside ◽  
G.D Osborn ◽  
...  
Keyword(s):  
North America ◽  
Late Holocene ◽  
Air Mass ◽  
Holocene Paleoclimate ◽  
Mass Circulation ◽  
Northwestern North America ◽  
The Impact ◽  
Circulation Dynamics ◽  
Late Holocene Paleoclimate

Identifying and sourcing pyrometamorphic artifacts: Clinker in subarctic North America and the hunter-gatherer response to a Late Holocene volcanic eruption

2019 ◽  
Vol 23 ◽  
pp. 773-790 ◽  
Author(s):  
Todd J. Kristensen ◽  
Thomas D. Andrews ◽  
Glen MacKay ◽  
Ruth Gotthardt ◽  
Sean C. Lynch ◽  
...  
Keyword(s):  
North America ◽  
Volcanic Eruption ◽  
Late Holocene

A Middle Holocene Vegetation Record from the Mojave Desert of North America and its Paleoclimatic Significance

1991 ◽  
Vol 35 (3-Part1) ◽  
pp. 427-437 ◽  
Author(s):  
W. Geoffrey Spaulding
Keyword(s):  
North America ◽  
Mojave Desert ◽  
Late Holocene ◽  
Middle Holocene ◽  
Paleoclimatic Significance ◽  
Holocene Period

AbstractPackrat middens from the McCullough Range, in the southeastern Mojave Desert of Nevada, record vegetation conditions during the periods 6800 to 5060 yr B.P. and 1250 yr B.P. to present. Their age and location are ideal to test for middle Holocene aridity; the period between 6800 and 5060 yr B.P. does appear to have been more arid than during the late Holocene period of record. This agrees with other evidence for middle Holocene aridity from the Southwest. Arguments for strengthened middle Holocene monsoons in the region are based chiefly on packrat midden samples older than 7500 yr B.P., or on samples that are younger than 5500 yr B.P. Simulations of 6000 yr B.P. climate that fail to show strong subtropical flow into the Southwest are therefore supported by evidence for enhanced aridity in that region.

Multiproxy evidence from caves of Native Americans altering the overlying landscape during the late Holocene of east-central North America

The Holocene ◽  
2009 ◽  
Vol 20 (2) ◽  
pp. 275-283 ◽  
Author(s):  
Gregory S. Springer ◽  
D. Matthew White ◽  
Harold D. Rowe ◽  
Ben Hardt ◽  
L. Nivanthi Mihimdukulasooriya ◽  
...  
Keyword(s):  
Native Americans ◽  
North America ◽  
Late Holocene ◽  
East Central
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