Conifers are a major source of sedimentary leaf wax n-alkanes when dominant on the landscape: Case studies from the Paleogene

Paleobotanical site information, terpenoid, n-alkane, and other and biomarker quantification and carbon isotope data from sediment samples collected from North America Paleogene fossil leaf sites that extend from Colorado to the High Arctic. Sediment samples were collected laterally along fossil lea...

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Bibliographic Details
Main Authors: Schlanser, Kristen M, Diefendorf, Aaron F, West, Christopher K, Greenwood, David R, Basinger, James F, Meyer, Herbert W, Lowe, Alexander J, Naake, Hans H
Format: Dataset
Language:English
Published: PANGAEA 2020
Subjects:
1,2,3,4-Tetrahydroretene
δ13C
1,2,9-Trimethyl-1,2,3,4-tetrahydropicene
13alpha(H)-Fichtelite
18-Norabieta-8,11,13-triene
18-Norisopimarane
19-Norabieta-3,8,11,13-tetraene
19-Norabieta-4,8,11,13-tetraene
19-Norabieta-8,11,13-triene
2,2,4a,9-Tetramethyl-1,2,3,4,4a,5,6,14b-octahydropicene
2,2,9-Trimethyl-1,2,3,4-tetrahydropicene
2-Methyl-1-(4'-methylpentyl)-6-isopropylnaphthalene
Abieta-8,11,13-triene
Abietane
AGE
maximum/old
minimum/young
Average chain length
Axel_Heiberg_Island
Axel Heiberg Island
Canadian Arctic
Belt_Ash_Carbonaceous_Bed
Boulder_Hills
British Columbia
Canada
Carbon
organic
total
carbon isotope
Carbon Preference Index
Cf-1_Carbonaceous_Bed
Colorado
United States of America
conifers
Creede
Dehydroicetexane
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.919135
https://doi.org/10.1594/PANGAEA.919135
Description
Summary:Paleobotanical site information, terpenoid, n-alkane, and other and biomarker quantification and carbon isotope data from sediment samples collected from North America Paleogene fossil leaf sites that extend from Colorado to the High Arctic. Sediment samples were collected laterally along fossil leaf-bearing zones. To disentangle the vegetation source of sediment n-alkanes, we measured the carbon isotope (δ13C) values of nonsteroidal triterpenoids (angiosperm biomarkers) and tricyclic diterpenoids (conifer biomarkers) to determine angiosperm and conifer end member δ13C values. Compounds were isolated using column chromatography and identified and quantified with an Agilent 7890A gas chromatograph (GC) interfaced to an Agilent 5975C quadrupole mass selective detector (MSD) and flame ionization detector (FID). Compound-specific carbon isotope analyses were performed, where possible, on n-C27 through n-C35 alkanes, diterpenoids, and triterpenoids by gas chromatograph-combustion-isotope ratio mass spectrometry (GC-C-IRMS).

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