Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA
We present two hypotheses regarding the evolution of Holocene climate in the Northern Rocky Mountains that stem from a previously unpublished environmental magnetic record from Jones Lake, Montana. First, we link two distinct intervals of fining magnetic grain size (documented by an increasing ratio...
Published in: | The Holocene |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SAGE Publications
2019
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1177/0959683619887418 http://journals.sagepub.com/doi/pdf/10.1177/0959683619887418 http://journals.sagepub.com/doi/full-xml/10.1177/0959683619887418 |
id |
crsagepubl:10.1177/0959683619887418 |
---|---|
record_format |
openpolar |
spelling |
crsagepubl:10.1177/0959683619887418 2023-05-15T17:33:35+02:00 Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA Maxbauer, Daniel P Shapley, Mark D Geiss, Christoph E Ito, Emi 2019 http://dx.doi.org/10.1177/0959683619887418 http://journals.sagepub.com/doi/pdf/10.1177/0959683619887418 http://journals.sagepub.com/doi/full-xml/10.1177/0959683619887418 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 30, issue 3, page 479-484 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2019 crsagepubl https://doi.org/10.1177/0959683619887418 2022-04-14T04:35:06Z We present two hypotheses regarding the evolution of Holocene climate in the Northern Rocky Mountains that stem from a previously unpublished environmental magnetic record from Jones Lake, Montana. First, we link two distinct intervals of fining magnetic grain size (documented by an increasing ratio of anhysteretic to isothermal remanent magnetization) to the authigenic production of magnetic minerals in Jones Lake bottom waters. We propose that authigenesis in Jones Lake is limited by rates of groundwater recharge and ultimately regional hydroclimate. Second, at ~8.3 ka, magnetic grain size increases sharply, accompanied by a drop in concentration of magnetic minerals, suggesting a rapid termination of magnetic mineral authigenesis that is coeval with widespread effects of the 8.2 ka event in the North Atlantic. This association suggests a hydroclimatic response to the 8.2 ka event in the Northern Rockies that to our knowledge is not well documented. These preliminary hypotheses present compelling new ideas that we hope will both highlight the sensitivity of magnetic properties to record climate variability and attract more work by future research into aridity, hydrochemical response, and climate dynamics in the Northern Rockies. Article in Journal/Newspaper North Atlantic SAGE Publications (via Crossref) Northern Rockies ENVELOPE(-123.446,-123.446,59.074,59.074) The Holocene 30 3 479 484 |
institution |
Open Polar |
collection |
SAGE Publications (via Crossref) |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Maxbauer, Daniel P Shapley, Mark D Geiss, Christoph E Ito, Emi Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
We present two hypotheses regarding the evolution of Holocene climate in the Northern Rocky Mountains that stem from a previously unpublished environmental magnetic record from Jones Lake, Montana. First, we link two distinct intervals of fining magnetic grain size (documented by an increasing ratio of anhysteretic to isothermal remanent magnetization) to the authigenic production of magnetic minerals in Jones Lake bottom waters. We propose that authigenesis in Jones Lake is limited by rates of groundwater recharge and ultimately regional hydroclimate. Second, at ~8.3 ka, magnetic grain size increases sharply, accompanied by a drop in concentration of magnetic minerals, suggesting a rapid termination of magnetic mineral authigenesis that is coeval with widespread effects of the 8.2 ka event in the North Atlantic. This association suggests a hydroclimatic response to the 8.2 ka event in the Northern Rockies that to our knowledge is not well documented. These preliminary hypotheses present compelling new ideas that we hope will both highlight the sensitivity of magnetic properties to record climate variability and attract more work by future research into aridity, hydrochemical response, and climate dynamics in the Northern Rockies. |
format |
Article in Journal/Newspaper |
author |
Maxbauer, Daniel P Shapley, Mark D Geiss, Christoph E Ito, Emi |
author_facet |
Maxbauer, Daniel P Shapley, Mark D Geiss, Christoph E Ito, Emi |
author_sort |
Maxbauer, Daniel P |
title |
Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA |
title_short |
Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA |
title_full |
Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA |
title_fullStr |
Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA |
title_full_unstemmed |
Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA |
title_sort |
holocene climate recorded by magnetic properties of lake sediments in the northern rocky mountains, usa |
publisher |
SAGE Publications |
publishDate |
2019 |
url |
http://dx.doi.org/10.1177/0959683619887418 http://journals.sagepub.com/doi/pdf/10.1177/0959683619887418 http://journals.sagepub.com/doi/full-xml/10.1177/0959683619887418 |
long_lat |
ENVELOPE(-123.446,-123.446,59.074,59.074) |
geographic |
Northern Rockies |
geographic_facet |
Northern Rockies |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
The Holocene volume 30, issue 3, page 479-484 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683619887418 |
container_title |
The Holocene |
container_volume |
30 |
container_issue |
3 |
container_start_page |
479 |
op_container_end_page |
484 |
_version_ |
1766132129255653376 |