Planetary chaos and inverted climate phasing in the Late Triassic of Greenland
Sedimentological records provide the only accessible archive for unraveling Earth’s orbital variations in the remote geological past. These variations modulate Earth’s cli- mate system and provide essential constraints on gravitational parameters used in solar system modeling. However, geologic docu...
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ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/7gyg-z075 2023-05-15T16:03:50+02:00 Planetary chaos and inverted climate phasing in the Late Triassic of Greenland Mau, Malte Kent, Dennis V. Clemmensen, Lars 2022 https://doi.org/10.7916/7gyg-z075 English eng https://doi.org/10.7916/7gyg-z075 Cyclostratigraphy Paleomagnetism Paleoclimatology Planets--Orbits Articles 2022 ftcolumbiauniv https://doi.org/10.7916/7gyg-z075 2022-04-30T22:19:54Z Sedimentological records provide the only accessible archive for unraveling Earth’s orbital variations in the remote geological past. These variations modulate Earth’s cli- mate system and provide essential constraints on gravitational parameters used in solar system modeling. However, geologic documentation of midlatitude response to orbital climate forcing remains poorly resolved compared to that of the low-latitude tropics, especially before 50 Mya, the limit of reliable extrapolation from the present. Here, we compare the climate response to orbital variations in a Late Triassic midlatitude tem- perate setting in Jameson Land, East Greenland (∼43°N paleolatitude) and the tropical low paleolatitude setting of the Newark Basin, with independent time horizons pro- vided by common magnetostratigraphic boundaries whose timing has been corrobo- rated by uranium-lead (U-Pb) zircon dating in correlative strata on the Colorado Plateau. An integrated cyclostratigraphic and magnetostratigraphic age model revealed long-term climate cycles with periods of 850,000 and 1,700,000 y ascribed to the Mars–Earth grand orbital cycles. This indicates a 2:1 resonance between modulation of orbital obliquity and eccentricity variations more than 200 Mya and whose periodicities are inconsistent with astronomical solutions and indicate chaotic diffusion of the solar system. Our findings also demonstrate antiphasing in climate response between low and midlatitudes that has implications for precise global correlation of geological records. Article in Journal/Newspaper East Greenland Greenland Columbia University: Academic Commons Greenland Jameson Land ENVELOPE(-23.500,-23.500,71.167,71.167) |
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Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Cyclostratigraphy Paleomagnetism Paleoclimatology Planets--Orbits |
spellingShingle |
Cyclostratigraphy Paleomagnetism Paleoclimatology Planets--Orbits Mau, Malte Kent, Dennis V. Clemmensen, Lars Planetary chaos and inverted climate phasing in the Late Triassic of Greenland |
topic_facet |
Cyclostratigraphy Paleomagnetism Paleoclimatology Planets--Orbits |
description |
Sedimentological records provide the only accessible archive for unraveling Earth’s orbital variations in the remote geological past. These variations modulate Earth’s cli- mate system and provide essential constraints on gravitational parameters used in solar system modeling. However, geologic documentation of midlatitude response to orbital climate forcing remains poorly resolved compared to that of the low-latitude tropics, especially before 50 Mya, the limit of reliable extrapolation from the present. Here, we compare the climate response to orbital variations in a Late Triassic midlatitude tem- perate setting in Jameson Land, East Greenland (∼43°N paleolatitude) and the tropical low paleolatitude setting of the Newark Basin, with independent time horizons pro- vided by common magnetostratigraphic boundaries whose timing has been corrobo- rated by uranium-lead (U-Pb) zircon dating in correlative strata on the Colorado Plateau. An integrated cyclostratigraphic and magnetostratigraphic age model revealed long-term climate cycles with periods of 850,000 and 1,700,000 y ascribed to the Mars–Earth grand orbital cycles. This indicates a 2:1 resonance between modulation of orbital obliquity and eccentricity variations more than 200 Mya and whose periodicities are inconsistent with astronomical solutions and indicate chaotic diffusion of the solar system. Our findings also demonstrate antiphasing in climate response between low and midlatitudes that has implications for precise global correlation of geological records. |
format |
Article in Journal/Newspaper |
author |
Mau, Malte Kent, Dennis V. Clemmensen, Lars |
author_facet |
Mau, Malte Kent, Dennis V. Clemmensen, Lars |
author_sort |
Mau, Malte |
title |
Planetary chaos and inverted climate phasing in the Late Triassic of Greenland |
title_short |
Planetary chaos and inverted climate phasing in the Late Triassic of Greenland |
title_full |
Planetary chaos and inverted climate phasing in the Late Triassic of Greenland |
title_fullStr |
Planetary chaos and inverted climate phasing in the Late Triassic of Greenland |
title_full_unstemmed |
Planetary chaos and inverted climate phasing in the Late Triassic of Greenland |
title_sort |
planetary chaos and inverted climate phasing in the late triassic of greenland |
publishDate |
2022 |
url |
https://doi.org/10.7916/7gyg-z075 |
long_lat |
ENVELOPE(-23.500,-23.500,71.167,71.167) |
geographic |
Greenland Jameson Land |
geographic_facet |
Greenland Jameson Land |
genre |
East Greenland Greenland |
genre_facet |
East Greenland Greenland |
op_relation |
https://doi.org/10.7916/7gyg-z075 |
op_doi |
https://doi.org/10.7916/7gyg-z075 |
_version_ |
1766399528414478336 |