Journal: Nature Communications

Article Title: Timing and pacing of the Late Devonian mass extinction event regulated by eccentricity and obliquity

doi: 10.1038/s41467-017-02407-1

Figure Lengend Snippet: Frasnian–Famennian magnetic susceptibility and δ 13 C carb stratigraphies for six globally distributed sections. H-32, CG-1, Sinsin proxy records, and H-32 and CG-1 biostratigraphy were constructed in the framework of this study. The conodont biostratigraphy for the Sinsin section is from Sandberg et al. . Section C (western Canada) magnetic susceptibility and biostratigraphy come from Whalen and Day and the δ 13 C carb data from Whalen et al. . High-resolution δ 13 C data from Kowala are from De Vleeschouwer et al. , whereas the low-resolution δ 13 C data and biostratigraphy come from Joachimski et al. . Fuhe magnetic susceptibility data and high-resolution carbon isotope data are from Whalen et al. , low-resolution carbon isotope data are from Chen et al. , and biostratigraphy is from Chen et al. . Throughout the figure, carbon isotope records in dark gray are δ 13 C carb and records in light gray are δ 13 C org . The Late Devonian paleogeographic map comes from De Vleeschouwer et al. and is inspired on reconstructions by Blakey . Fam. Famennian, h.-j. hassi-jamieae, U. upper, linguif . linguiformis , subp . subperlobata , triang . triangularis , del. platys delicatula platys

Article Snippet: For example, Section C, H-32, Sinsin, and Fuhe exhibit a characteristic double minimum in magnetic susceptibility just prior to the F–F boundary (Fig. ).

Techniques: Construct, Western Blot

Journal: Nature Communications

Article Title: Timing and pacing of the Late Devonian mass extinction event regulated by eccentricity and obliquity

doi: 10.1038/s41467-017-02407-1

Figure Lengend Snippet: Late Frasnian–earliest Famennian magnetic susceptiblity data from globally distributed sections along a common astronomically constrained relative timescale. a The H-32, CG-1, Sinsin, and Fuhe records have been tied-in into the Frasnian astrochronologic framework for Section C (western Canada) and Kowala (Poland), based on distinct features in magnetic susceptibility and carbon isotope geochemistry (Figs. and ). The Frasnian astrochronogic framework counts 16.5 long 405-kyr eccentricity cycles (Fr-LEC) – . The first Famennian 405-kyr cycle (Fa-LEC 1) is the same cycle as Fr-LEC 17. b The 405-kyr eccentricity filter is derived from the La2004 solution , and plotted according to the phase relationships discussed in this study. c – f Multitaper method (MTM) power spectra of the tied-in records show peaks at or close to the expected frequencies of 100-kyr eccentricity (ecc.), obliquity and precession. Vertical lines across power spectra indicate the expected astronomical frequencies at 375 Ma, as calculated by Berger et al. . linguif. linguiformis, subp. subperlobata, triang. triangularis, del. platys delicatula platys

Article Snippet: For example, Section C, H-32, Sinsin, and Fuhe exhibit a characteristic double minimum in magnetic susceptibility just prior to the F–F boundary (Fig. ).

Techniques: Western Blot, Derivative Assay

Journal: Nature Communications

Article Title: Timing and pacing of the Late Devonian mass extinction event regulated by eccentricity and obliquity

doi: 10.1038/s41467-017-02407-1

Figure Lengend Snippet: Magnetic susceptibility correlation. Tie-points between H-32, CG-1, Section C, Sinsin, and Fuhe were obtained by visually correlating distinct features in magnetic susceptibility (red ties). The gray ties were established by correlating distinct features in carbon isotope geochemistry (Fig. ). We construct a common floating age model for all sections by assigning an age relative to the F–F boundary to each tie-point, according to the existing astrochronologic framework of Section C and Kowala , . These ages are listed in black. The tie-point ages listed in green indicate the “optimized” tie-point ages, after 5000 Monte Carlo simulations (“Methods”). The latter tie-point ages are used for the depth-to-time conversion used in Figs. and . Fam. Famennian, h.-j. hassi-jamieae, U. upper, linguif. linguiformis, subp. subperlobata, triang. triangularis, del. platys delicatula platys

Article Snippet: For example, Section C, H-32, Sinsin, and Fuhe exhibit a characteristic double minimum in magnetic susceptibility just prior to the F–F boundary (Fig. ).

Techniques: Construct

Journal: Nature Communications

Article Title: Timing and pacing of the Late Devonian mass extinction event regulated by eccentricity and obliquity

doi: 10.1038/s41467-017-02407-1

Figure Lengend Snippet: Carbon isotope correlation. Tie-points between H-32, CG-1, Section C, Sinsin, Fuhe, and Kowala were obtained by visually correlating distinct features in carbon isotope geochemistry (blue ties). The gray ties were established by correlating distinct features in magnetic susceptibility (Fig. ). We construct a common floating age model for all sections by assigning an age relative to the F–F boundary to each tie-point, according to the existing astrochronologic framework of Section C and Kowala , . These ages are listed in black. The tie-point ages listed in green indicate the “optimized” tie-point ages, after 1000 Monte Carlo simulations (“Methods”). The latter tie-point ages are used for the depth-to-time conversion used in Figs. and . Fam. Famennian, h.-j. hassi-jamieae, U. upper, linguif. linguiformis, subp. subperlobata, triang. triangularis, del. platys delicatula platys

Article Snippet: For example, Section C, H-32, Sinsin, and Fuhe exhibit a characteristic double minimum in magnetic susceptibility just prior to the F–F boundary (Fig. ).

Techniques: Construct

Journal: Nature Communications

Article Title: Timing and pacing of the Late Devonian mass extinction event regulated by eccentricity and obliquity

doi: 10.1038/s41467-017-02407-1

Figure Lengend Snippet: Late Frasnian–earliest Famennian carbon isotope geochemistry from globally distributed sections along a common astronomically constrained relative timescale. The H-32, CG-1, Sinsin, and Fuhe records have been tied-in into the Frasnian astrochronologic framework for Section C (western Canada) and Kowala (Poland), based on distinct features in magnetic susceptibility and carbon isotope geochemistry (Figs. and ). The Frasnian astrochronogic framework counts 16.5 long 405-kyr eccentricity cycles (Fr-LEC) – . The first Famennian 405-kyr cycle (Fa-LEC 1) is the same cycle as Fr-LEC 17. UKW upper Kellwasser, LKW lower Kellwasser

Article Snippet: For example, Section C, H-32, Sinsin, and Fuhe exhibit a characteristic double minimum in magnetic susceptibility just prior to the F–F boundary (Fig. ).

Techniques: Western Blot