1987 Fiscal Year Final Research Report Summary
ON THE IZUMI SANDSTONE GROUP
| Project/Area Number |
61540573
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | GRANT-IN-AID FOR SCIENTIFIC RESEARCH(C) |
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Principal Investigator |
MATSUO Hidekuni Prof. (EHIME UNIV.FAC. SCI), 理学部, 教授 (20019798)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Jiro Sub.-Prof.(EHIME UNIV. FAC. EDUC.), 教養学部, 助教授 (70116945)
KASHIMA Naruhiko PROF. (EHIME UNIV.FAC.LIB.ARTS), 教養部, 教授 (10036197)
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| Project Period (FY) |
1986 – 1987
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| Keywords | IZUMI SANDSTONE GROUP / IWAKIJI FLORA / ARCHAEOZOSTERA / LEBENSSPUREN / PL10CENE / ANDESITIC ROCKS / 向斜構造 |
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| Research Abstract |
IZUMI SANDSTONE GROUP HAS LONG KNOWN TO BE FORMED OF THEUPPER CRETACEOUS DEPOSITS IN THE JAPANESE ISLANDS; AND IT SHOWS A BELT-LIK SEDIMENTED ROCKS, AND TRENDS THE EAST-TO-WEST WITH THE LENGTH OF 500 KM. FROM THE IZUMI MOUNTAIN RANGEIN KII PENINSULA TO USUKI CITY IN KYUSHU.
IN THIS REPORT, THE WRITER TRIES A DESCRIPTION ON FIVE NEW EVIDENCES,AS FOLLOWS;
1) IWAKIJI FLORA: THIS FLORA SHOWS THE DECIDUOUS BROARD LEAVES FACIES, AND IS THE ONE OF THE MOST IMPORTANT FLORA OF THE UPPER CRETACEOUS IN JAPAN.
2) ON THE ARCHASEZOSTERA: THIS FOSSIL-GENUS HAS BEEN CONSIDERED A LEBENSSPUPEN BY SOME PALAEOECOLOGISTS,BUT IT SHOWS A BOTANICAL EVIDENCE. HOWEVER, THE WRITER CONSIDERS THAT IT IS INCERTITUDE MATTER ON SOME PARTS OF THESE FOSSILS.
3) METAMORPHOSED CONDITION BY THE INTRUSIVED PLOCENE ANDESITIC ROCKS: IN THE WESTERN PART OF THIS GROUP. IT HAS BEEN FOUND IN THE HORNFELS-LIKE ROCKS BY SOME INTRUDING OF ANDESITIC ROCKS.
4) ON THE WESTERN AREA OF THIS GROUP: THE WESTERN-END OF THIS GROUP AHS BEEN KNOWN AT AOSHIMA, MAGAHAMA-CHO, EHIME PREFECTURE. BUT ITS AREA EXISTS OF TREDING IN KYUSHU OVER THE BUNGO-SUIDU(CHANNEL).
5) STURUCTURE OF THIS GROUP: THIS GROUP IS SEPARATED SIX-BLOCKS BY THE FAULTS OF TRDNDING OF THE SOUTH -TO-NORTH. AND IN THESE BOLCKS WERE FOUND IN THE PITCHING CYNCLINAL STRUCTURE IN THE EASTWARD.
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Research Products
(5 results)
