Murayama, Masaki; Yamamoto, Koshi; Mimura, Koichi (1999): n-fatty acids of shale partings in the Franciscan bedded cherts [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.763583, Supplement to: Murayama, M et al. (1999): Depositional environment of sedimentary rocks inferred from normal fatty acid compositions. Sedimentary Geology, 125(1-2), 61-68, https://doi.org/10.1016/S0037-0738(98)00143-2
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Abstract:
Normal saturated fatty acid (n-fatty acid) in marine sediments from coastal and pelagic environments were analyzed. The coastal sediments contain both short-chained n-fatty acids with carbon numbers from 12 to 18 and long-chained acids from 22 to 32, whereas the pelagic sediments contain predominantly short-chained acids. The relative abundance of short-chained to long-chained n-fatty acids, expressed by the molar ratio C16/C26, can be an indicator to assess the depositional environment of sedimentary rocks. The ratio of long-chained n-fatty acids (C22–C32) to the total n-fatty acids also has the potential to discriminate sedimentary environments. The indicators based on the n-fatty acids were applied to the Franciscan bedded cherts. The result shows that the bedded cherts had deposited in continuous environments from the pelagic to the coastal. This is in harmony with the same inference based on major, trace and rare earth elements and normal paraffins.
Coverage:
Latitude: 37.837000 * Longitude: -122.483000
Minimum SECTION, height: 10.5 m * Maximum SECTION, height: 61.0 m
Event(s):
Comment:
Distance is the vertical distance from the basal pillow basalt.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Murayama, Masaki | |||
| 2 | SECTION, height | Section | m | Geocode | ||
| 3 | Fatty acids, total per unit sediment mass | FA tot/sed | µg/g | Murayama, Masaki | ||
| 4 | Ratio | Ratio | Murayama, Masaki | C16/C26 | ||
| 5 | Ratio | Ratio | Murayama, Masaki | Sum(C22-C32)/total n-fatty acid | ||
| 6 | Carbon Preference Index, fatty acids | CPI FA | Murayama, Masaki | C21-C30 | ||
| 7 | Carbon Preference Index, fatty acids | CPI FA | Murayama, Masaki | C14-C24 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
96 data points