Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group
This part of the Anthropocene Working Group (AWG) submission proposes that the base of the Anthropocene should be defined as series/epoch, terminating the Holocene Series/Epoch with a single Crawfordian stage/age using a Global boundary Stratotype Section and Point (GSSP) in an annually varved Crawf...
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2024
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crescholarship:10.31223/x5rd71 2024-05-12T07:54:35+00:00 Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group Waters, Colin Turner, Simon An, Zhisheng Barnosky, Anthony Cearreta, Alejandro Cundy, Andrew Fairchild, Ian Fiałkiewicz-Kozieł, Barbara Gałuszka, Agnieszka Grinevald, Jacques Hajdas, Irka Han, Yongming Head, Martin Ivar do Sul, Juliana Jeandel, Catherine Leinfelder, Reinhold McCarthy, Francine McNeill, John Odada, Eric Oreskes, Naomi Poirier, Clément Richter, Daniel Rose, Neil Saito, Yoshiki Shotyk, William Summerhayes, Colin Syvitski, Jaia Vidas, Davor Wagreich, Michael Williams, Mark Wing, Scott Zalasiewicz, Jan Zinke, Jens 2024 http://dx.doi.org/10.31223/x5rd71 unknown California Digital Library (CDL) posted-content 2024 crescholarship https://doi.org/10.31223/x5rd71 2024-04-18T08:47:18Z This part of the Anthropocene Working Group (AWG) submission proposes that the base of the Anthropocene should be defined as series/epoch, terminating the Holocene Series/Epoch with a single Crawfordian stage/age using a Global boundary Stratotype Section and Point (GSSP) in an annually varved Crawford Lake core, Ontario, Canada, defined at 17.5 cm in core CRA23-BC-1F-B at the base of the dark lamina in a varve deposited in 1952 CE, at the level where the primary marker shows a rapid increase in 239+240Pu concentrations (coinciding with a globally recognisable, isochronous signal of the first above-ground thermonuclear tests). Secondary markers, determined in precisely correlated core closely adjacent to the proposed GSSP host, include a marked increase in 14C values and in spheroidal carbonaceous particles (SCPs), increased heavy metal concentrations, a decline in δ15N values, a marked change in phytoplankton assemblages and declines in elm (Ulmus) pollen and in non-arboreal pollen. The submission also provides descriptions of three proposed Standard Auxiliary Boundary Stratotypes (SABSs), in cores extracted from marine anoxic sediments of Beppu Bay (Japan), in Sihailongwan Maar Lake (China) and in the Śnieżka Peatland (Poland) and eight reference sections located in cores extracted from marine anoxic sediments in the Baltic Sea, from coral bioherms off Australia and in the Gulf of Mexico, from an Antarctic ice core, from San Francisco Estuary and nearby lake (USA), in a speleothem from northern Italy and a section in urban anthropogenic deposits in Austria. This ubiquity of signals verifies that the Anthropocene can be widely delineated as a sharply distinctive chronostratigraphic unit in diverse terrestrial and marine depositional environments, and reflects a major Earth System change that will have geologically lasting consequences. Other/Unknown Material Antarc* Antarctic ice core eScholarship Repository (University of California) Antarctic Canada Crawford ENVELOPE(-86.467,-86.467,-77.717,-77.717) |
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Open Polar |
collection |
eScholarship Repository (University of California) |
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unknown |
description |
This part of the Anthropocene Working Group (AWG) submission proposes that the base of the Anthropocene should be defined as series/epoch, terminating the Holocene Series/Epoch with a single Crawfordian stage/age using a Global boundary Stratotype Section and Point (GSSP) in an annually varved Crawford Lake core, Ontario, Canada, defined at 17.5 cm in core CRA23-BC-1F-B at the base of the dark lamina in a varve deposited in 1952 CE, at the level where the primary marker shows a rapid increase in 239+240Pu concentrations (coinciding with a globally recognisable, isochronous signal of the first above-ground thermonuclear tests). Secondary markers, determined in precisely correlated core closely adjacent to the proposed GSSP host, include a marked increase in 14C values and in spheroidal carbonaceous particles (SCPs), increased heavy metal concentrations, a decline in δ15N values, a marked change in phytoplankton assemblages and declines in elm (Ulmus) pollen and in non-arboreal pollen. The submission also provides descriptions of three proposed Standard Auxiliary Boundary Stratotypes (SABSs), in cores extracted from marine anoxic sediments of Beppu Bay (Japan), in Sihailongwan Maar Lake (China) and in the Śnieżka Peatland (Poland) and eight reference sections located in cores extracted from marine anoxic sediments in the Baltic Sea, from coral bioherms off Australia and in the Gulf of Mexico, from an Antarctic ice core, from San Francisco Estuary and nearby lake (USA), in a speleothem from northern Italy and a section in urban anthropogenic deposits in Austria. This ubiquity of signals verifies that the Anthropocene can be widely delineated as a sharply distinctive chronostratigraphic unit in diverse terrestrial and marine depositional environments, and reflects a major Earth System change that will have geologically lasting consequences. |
format |
Other/Unknown Material |
author |
Waters, Colin Turner, Simon An, Zhisheng Barnosky, Anthony Cearreta, Alejandro Cundy, Andrew Fairchild, Ian Fiałkiewicz-Kozieł, Barbara Gałuszka, Agnieszka Grinevald, Jacques Hajdas, Irka Han, Yongming Head, Martin Ivar do Sul, Juliana Jeandel, Catherine Leinfelder, Reinhold McCarthy, Francine McNeill, John Odada, Eric Oreskes, Naomi Poirier, Clément Richter, Daniel Rose, Neil Saito, Yoshiki Shotyk, William Summerhayes, Colin Syvitski, Jaia Vidas, Davor Wagreich, Michael Williams, Mark Wing, Scott Zalasiewicz, Jan Zinke, Jens |
spellingShingle |
Waters, Colin Turner, Simon An, Zhisheng Barnosky, Anthony Cearreta, Alejandro Cundy, Andrew Fairchild, Ian Fiałkiewicz-Kozieł, Barbara Gałuszka, Agnieszka Grinevald, Jacques Hajdas, Irka Han, Yongming Head, Martin Ivar do Sul, Juliana Jeandel, Catherine Leinfelder, Reinhold McCarthy, Francine McNeill, John Odada, Eric Oreskes, Naomi Poirier, Clément Richter, Daniel Rose, Neil Saito, Yoshiki Shotyk, William Summerhayes, Colin Syvitski, Jaia Vidas, Davor Wagreich, Michael Williams, Mark Wing, Scott Zalasiewicz, Jan Zinke, Jens Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group |
author_facet |
Waters, Colin Turner, Simon An, Zhisheng Barnosky, Anthony Cearreta, Alejandro Cundy, Andrew Fairchild, Ian Fiałkiewicz-Kozieł, Barbara Gałuszka, Agnieszka Grinevald, Jacques Hajdas, Irka Han, Yongming Head, Martin Ivar do Sul, Juliana Jeandel, Catherine Leinfelder, Reinhold McCarthy, Francine McNeill, John Odada, Eric Oreskes, Naomi Poirier, Clément Richter, Daniel Rose, Neil Saito, Yoshiki Shotyk, William Summerhayes, Colin Syvitski, Jaia Vidas, Davor Wagreich, Michael Williams, Mark Wing, Scott Zalasiewicz, Jan Zinke, Jens |
author_sort |
Waters, Colin |
title |
Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group |
title_short |
Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group |
title_full |
Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group |
title_fullStr |
Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group |
title_full_unstemmed |
Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group |
title_sort |
part 2: descriptions of the proposed crawford lake gssp and supporting sabss. the anthropocene epoch and crawfordian age: proposals by the anthropocene working group |
publisher |
California Digital Library (CDL) |
publishDate |
2024 |
url |
http://dx.doi.org/10.31223/x5rd71 |
long_lat |
ENVELOPE(-86.467,-86.467,-77.717,-77.717) |
geographic |
Antarctic Canada Crawford |
geographic_facet |
Antarctic Canada Crawford |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_doi |
https://doi.org/10.31223/x5rd71 |
_version_ |
1798850443620646912 |