Open AccessPlanetary chaos and inverted climate phasing in the Late Triassic of Greenland
Author(s) -
Malte Mau,
Dennis V. Kent,
Lars B. Clemmensen
Publication year - 2022
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.2118696119
Subject(s) - geology , orbital forcing , cyclostratigraphy , middle latitudes , milankovitch cycles , paleontology , paleoclimatology , climate state , mars exploration program , hesperian , climatology , climate change , earth science , structural basin , global warming , glacial period , astrobiology , effects of global warming , physics , oceanography , martian
Significance Our study of climate response to orbital variations in a Late Triassic midlatitude temperate setting in Jameson Land, East Greenland, provides robust evidence of astronomically forced grand cycles ascribed to gravitational interactions between Earth and Mars and is an Early Mesozoic record where both Mars–Earth modulation components are present and constrained with adequate chronostratigraphic controls. These findings suggest chaotic behavior of the inner Solar System and have implications as reference points in calculations of the past motions of the planets in the Solar System. Furthermore, our findings demonstrate a climate antiphasing between low and midlatitudes, which has implications for precise correlation of geological records and for validating models of Earth’s climate dynamics.