scholarly journals Valley glaciers persisted in the Lake District, north-west England, until ∼16-15 ka as revealed by terrestrial cosmogenic nuclide (10 Be) dating: a response to Heinrich event 1?

2018 ◽  
Vol 33 (5) ◽  
pp. 518-526 ◽  
Author(s):  
Peter Wilson ◽  
Ángel Rodés ◽  
Alan Smith
Keyword(s):  
Lake District ◽  
North West ◽  
Cosmogenic Nuclide ◽  
Heinrich Event ◽  
Heinrich Event 1

scholarly journals The Last Glacial Maximum and Heinrich Event 1 in terms of climate and vegetation around the Alboran Sea: a preliminary model-data comparison

2005 ◽  
Vol 337 (10-11) ◽  
pp. 983-992 ◽  
Author(s):  
Masa Kageyama ◽  
Nathalie Combourieu Nebout ◽  
Pierre Sepulchre ◽  
Odile Peyron ◽  
Gerhard Krinner ◽  
...  
Keyword(s):  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Model Data ◽  
Last Glacial ◽  
Data Comparison ◽  
Heinrich Event ◽  
Preliminary Model ◽  
The Last Glacial Maximum ◽  
Heinrich Event 1 ◽  
The Last Glacial

scholarly journals Tropical climate and vegetation changes during Heinrich Event 1: a model-data comparison

2012 ◽  
Vol 8 (1) ◽  
pp. 37-57 ◽  
Author(s):  
D. Handiani ◽  
A. Paul ◽  
L. Dupont
Keyword(s):  
South America ◽  
Vegetation Changes ◽  
Model Data ◽  
Tropical Regions ◽  
Data Comparison ◽  
Heinrich Event ◽  
Climate Background ◽  
Northern South America ◽  
Glacial Climate ◽  
Heinrich Event 1

Abstract. Abrupt climate changes from 18 to 15 thousand years before present (kyr BP) associated with Heinrich Event 1 (HE1) had a strong impact on vegetation patterns not only at high latitudes of the Northern Hemisphere, but also in the tropical regions around the Atlantic Ocean. To gain a better understanding of the linkage between high and low latitudes, we used the University of Victoria (UVic) Earth System-Climate Model (ESCM) with dynamical vegetation and land surface components to simulate four scenarios of climate-vegetation interaction: the pre-industrial era, the Last Glacial Maximum (LGM), and a Heinrich-like event with two different climate backgrounds (interglacial and glacial). We calculated mega-biomes from the plant-functional types (PFTs) generated by the model to allow for a direct comparison between model results and palynological vegetation reconstructions. Our calculated mega-biomes for the pre-industrial period and the LGM corresponded well with biome reconstructions of the modern and LGM time slices, respectively, except that our pre-industrial simulation predicted the dominance of grassland in southern Europe and our LGM simulation resulted in more forest cover in tropical and sub-tropical South America. The HE1-like simulation with a glacial climate background produced sea-surface temperature patterns and enhanced inter-hemispheric thermal gradients in accordance with the "bipolar seesaw" hypothesis. We found that the cooling of the Northern Hemisphere caused a southward shift of those PFTs that are indicative of an increased desertification and a retreat of broadleaf forests in West Africa and northern South America. The mega-biomes from our HE1 simulation agreed well with paleovegetation data from tropical Africa and northern South America. Thus, according to our model-data comparison, the reconstructed vegetation changes for the tropical regions around the Atlantic Ocean were physically consistent with the remote effects of a Heinrich event under a glacial climate background.

scholarly journals Catastrophic Drought in the Afro-Asian Monsoon Region During Heinrich Event 1

Science ◽  
2011 ◽  
Vol 331 (6022) ◽  
pp. 1299-1302 ◽  
Author(s):  
J. C. Stager ◽  
D. B. Ryves ◽  
B. M. Chase ◽  
F. S. R. Pausata
Keyword(s):  
Asian Monsoon ◽  
Monsoon Region ◽  
Asian Monsoon Region ◽  
Heinrich Event ◽  
Heinrich Event 1

Warmings in the far northwestern Pacific promoted pre-Clovis immigration to America during Heinrich event 1

Geology ◽  
2006 ◽  
Vol 34 (3) ◽  
pp. 141 ◽  
Author(s):  
Michael Sarnthein ◽  
Thorsten Kiefer ◽  
Pieter M. Grootes ◽  
Henry Elderfield ◽  
Helmut Erlenkeuser
Keyword(s):  
Northwestern Pacific ◽  
Heinrich Event ◽  
Heinrich Event 1

Tourmalinization in the Skiddaw Group around Crummock Water, English Lake District

1986 ◽  
Vol 50 (355) ◽  
pp. 17-26 ◽  
Author(s):  
N. J. Fortey ◽  
D. C. Cooper
Keyword(s):  
Polarized Light ◽  
Lake District ◽  
West Lake ◽  
North West ◽  
Fine Grained ◽  
Metasedimentary Rocks ◽  
Granitic Intrusion ◽  
English Lake District ◽  
Local Enrichment ◽  
Gains And Losses

AbstractVeins of tourmalinite were formed by wallrock alteration adjacent to steep fractures in bleached, indurated Skiddaw Group metasedimentary rocks around Crummock Water, north-west Lake District. The vein rock is a fine-grained granoblastic mosaic of tourmaline, quartz, and minor rutile in which bedding is preserved. Brecciation, in which tourmalinite fragments are set in a coarser quartz-tourmaline matrix, is present in some veins. Networks of cross-cutting quartz veinlets with tourmaline, chlorite, and muscovite are very common. The tourmaline is intermediate schorl dravite and mostly brown in plane polarized light, though prisms in breccia matrix and veinlets have blue, low-Ti cores and brown rims. Comparison of tourmalinite and host-rock analyses indicates almost complete loss during tourmalinization of K, Rb, Li, Ba, As, and La, plus depletion in Ce, Y, Na, Sr, P, and Mn. The elements Si, B, Mo, and erratically, minor F, W, and Sn were introduced. Cu, Pb, Zn, and Ca show both gains and losses probably due to initial depletion and subsequent local enrichment. Reduction in Al, Zr, and Ti concentrations relates to dilution by introduced silica. The tourmalinite veins were formed by the action of hydrothermal fluids derived from the concealed late-Caledonian granitic intrusion responsible for the thermal metamorphism of the country rocks.

LGM hosing approach to Heinrich Event 1: results and perspectives from data–model integration using water isotopes

2014 ◽  
Vol 106 ◽  
pp. 247-261 ◽  
Author(s):  
Didier M. Roche ◽  
Didier Paillard ◽  
Thibaut Caley ◽  
Claire Waelbroeck
Keyword(s):  
Data Model ◽  
Water Isotopes ◽  
Model Integration ◽  
Heinrich Event ◽  
Heinrich Event 1

High resolution Secondary Ionisation Mass Spectrometry (SIMS) δ18O analyses of Hulu Cave speleothem at the time of Heinrich Event 1

2007 ◽  
Vol 238 (3-4) ◽  
pp. 197-212 ◽  
Author(s):  
P.C. Treble ◽  
A.K. Schmitt ◽  
R.L. Edwards ◽  
K.D. McKeegan ◽  
T.M. Harrison ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Heinrich Event ◽  
Ionisation Mass Spectrometry ◽  
Ionisation Mass ◽  
Heinrich Event 1
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