| Project/Area Number |
08041104
|
|---|
| Research Category |
Grant-in-Aid for international Scientific Research
|
| Allocation Type | Single-year Grants |
|---|
| Section | Field Research |
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
KUMAZAWA Mineo NAGOYA UNIVERSITY, FACULTY OF SCIENCE, PROFESSOR IN HONOR, 理学部, 名誉教授 (60022571)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KAWAKAMI Shinichi GIFU UNIVERSITY, FACULTY OF EDUCATION, ASSOCIATE PROFESSOR, 教育学部, 助教授 (80183036)
TAKANO Masao NAGOYA UNIVERSITY, GRADUATE SCHOOL OF SCIENCE, ASSOCIATE PROFESSOR, 大学院・理学研究科, 助教授 (90262849)
|
|---|
| Project Period (FY) |
1996
|
| Project Status |
Completed (Fiscal Year 1996)
|
| Budget Amount *help |
¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 1996: ¥4,300,000 (Direct Cost: ¥4,300,000)
|
|---|
| Keywords | shima-shimalogy / banded iron formation / stromatolite / Slave Craton / Archaean / Proterozoic boundary / Earth environmental change / Luna-Earth system |
|---|
| Research Abstract |
The purpose of this study is to collect appropriate samples for decoding the rhythmic variation of Earth's environment at Archaean/Proterozoic boundary. We carried out the geological survey and sample collection around Yellowknife, NWT, Canada from 9/July to 4/August. We developed the new technology to collect perfectly continuous sequences of the sedimentary rocks, so that we were able to obtain appropriate samples for the quantitative analysis of the rhythms and events of the sedimentation process. We acquired the continuous sequences of the Banded Iron Formation from Yellowknife Volcanic Belt and the stromatolites from Great Slave Supergroup. These samples were analyzed with the scanner type image analyzing system as the X-ray fluorescence scanner. The BIF from the Yellowknife Volcanic Belt has the characteristic variations in the concentration of Ca as the bands of cm-order width. The stromatolites from Great Slave Supergroup shows the rhythm in the concentrations of Ca and Si. We are trying to construct the models sedimentation process and carry out time-series analysis. The results will be presented at the GAC/MAC Joint Annual Meeting at Ottawa, Canada.
|
