CAJ | 학술논문

对鄂霍次克海东南部科学院隆起区 OS03-1岩心碎屑重矿物及火山灰层进行了详细分析。岩心重矿物以紫苏辉石、绿帘石和普通角闪石为主，特征矿物为钛磁铁矿和普通辉石，矿物特征表明本岩心的物质主要来源于冰筏搬运（陆源）和火山喷发。陆源物质大部分来源于鄂霍次克海西部和北部地区，少量来自堪察加半岛冰川携带沉积物；火山物质则来源于堪察加半岛和千岛群岛的火山喷发产物。在岩心中识别出3个火山灰层，各种证据表明火山灰层1与已知的K2火山灰层相同，形成年代为26 ka B P；火山灰层3具有明显火山物质与陆源物质混合特征，而火山灰层2则只能通过碎屑矿物的含量特征来判定，外在颜色不明显，已经明显的被陆源物质所稀释。研究表明，碎屑矿物组分参数可以有效地指示物质来源，也是识别火山灰层存在（特别是被陆源物质稀释）的可靠指标。
대악곽차극해동남부과학원륭기구 OS03-1암심쇄설중광물급화산회층진행료상세분석。암심중광물이자소휘석、록렴석화보통각섬석위주，특정광물위태자철광화보통휘석，광물특정표명본암심적물질주요래원우빙벌반운（륙원）화화산분발。륙원물질대부분래원우악곽차극해서부화북부지구，소량래자감찰가반도빙천휴대침적물；화산물질칙래원우감찰가반도화천도군도적화산분발산물。재암심중식별출3개화산회층，각충증거표명화산회층1여이지적K2화산회층상동，형성년대위26 ka B P；화산회층3구유명현화산물질여륙원물질혼합특정，이화산회층2칙지능통과쇄설광물적함량특정래판정，외재안색불명현，이경명현적피륙원물질소희석。연구표명，쇄설광물조분삼수가이유효지지시물질래원，야시식별화산회층존재（특별시피륙원물질희석）적가고지표。
Composition and assemblage characteristics of heavy minerals were analyzed in core OS 03 -1 sediment collected from the Academy of Sciences Rise of southeastern Okhotsk Sea .The results show that the dominant minerals are hyperthene ,epidote and common hornblende ,and characteristic minerals are titanomagnetite and au-gite;the sediments are mostly ice-rafted debris (IRD) and volcanogenic matter .IRD were mainly derived from the western and northern Okhotsk Sea ,and a little from Kamchatka peninsula .Volcanogenic matter was mainly from Kamchatka Peninsula and Kurile Islands .Three tephra layers were identified .The first layer is characterized by special color ,grain size and mineral composition ,which was same to the well studied K2 tephra layer and deposited at 26.0 ka BP .The third layer could be recognized by color ,but was clearly diluted by terrigenous sediment .The second tephra layer couldn't be distinguished by color and grain size because of mixing with terrigenous sediment . T he study also show s that composition and assemblage of heavy minerals are both effective indicators of sediment sources ,and credible indentifying index of tephra ,especially those diluted by terrigenous matter .