| MINERALOGY OF COASTAL DEPOSITS OF NORTH-WESTERN SEA OF JAPAN |
| |
| 作者姓名： | N.G.Razjigaeva L.A.Ganzey |
| |
| 作者单位： | Pacific Institute of Geography，Far East Branch. The USSR Academy of Sciences，Vladivostok，USSR |
| |
| 摘 要： | Distribution of heavy, light and clay minerals in Late Pleistocene—Holocene deposits from different coastal environments (beaches, lagoons, dunes, relict lakes, ria bays and inlets, open inlets) was analysed. It was established that mineralogical composition of coastal deposits was a result of provenance and its hypergenous changes, transformation of material within transit zone, and accumulative conditions of inshore zone. Contents of stable minerals increase in deposits of the inlets confined to mouths of the small streams and in horizons of the sections, formed during regressive phases. Unstable minerals amount is higher in deposits of inlets, confined to mouths of the large river. The clay mineral fraction of shelf sediments consists mostly of illite. Authigenous pyrites dominate in deposits of ria bays, lagoons and relict lakes, formed during transgressive phases. Volcanic glass, found in deposits, is product of Holocene eruptions of Baegdusan (Baitushen) Volcano.
|
MINERALOGY OF COASTAL DEPOSITS OF NORTH-WESTERN SEA OF JAPAN |
| |
| N.G.Razjigaeva
,L.A.Ganzey.MINERALOGY OF COASTAL DEPOSITS OF NORTH-WESTERN SEA OF JAPAN[J].Marine Geology & Quaternary Geology,1991(4). |
| |
| Authors: | NGRazjigaeva LAGanzey |
| |
| Abstract: | Distribution of heavy, light and clay minerals in Late Pleistocene-Holocene deposits from different coastal environments (beaches, lagoons, dunes, relict lakes, ria bays and inlets, open inlets) was analysed. It was established that mineralogical composition of coastal deposits was a result of provenance and its hypergenous changes, transformation of material within transit zone, and accumulative conditions of inshore zone. Contents of stable minerals increase in deposits of the inlets confined to mouths of the small streams and in horizons of the sections, formed during regressive phases. Unstable minerals amount is higher in deposits of inlets, confined to mouths of the large river. The clay mineral fraction of shelf sediments consists mostly of illite. Authigenous pyrites dominate in deposits of ria bays, lagoons and relict lakes, formed during transgressive phases. Volcanic glass, found in deposits, is product of Holocene eruptions of Baegdusan (Baitushen) Volcano. |
| |
| Keywords: | Coastal sediments Sea of Japan heavy light authigenic and clay minerals volcanic glass |
| 本文献已被 CNKI 等数据库收录！ |
|
