| Project/Area Number |
26610187
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Geochemistry/Cosmochemistry
|
|---|
| Research Institution | The University of Tokyo (2015)
Japan Agency for Marine-Earth Science and Technology (2014) |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Keywords | 有機金属化合物 |
|---|
| Outline of Final Research Achievements |
The amount of bioessential metals play a key role in marine biogeochemical processes as a limiting factor for vital reactions. Quantitative analysis of metal-bearing compounds may be able to indicate in situ proxy for biological activity. I measured down-core data of bioessential metals (Fe, An, Cu, Mn, Mo), and radiogenic Sr isotope ratios in a Quaternary sediment core recovered from the West Caroline Basin in the western equatorial Pacific. Following chromatographic separation of lipid, protein, and pigment fractions, metal concentrations were measured with a quadrupole inductively coupled plasma mass spectrometer. I also measured dense benthic microbial mat of solar salterns which harbor surprisingly diverse microorganisms. The in situ geochemical signatures and sediment fabrics of salt deposits allows proposing a past depositional environment with marked impact on the benthic biota of the depositional basin.
|
