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首页> 外文期刊>Journal of Asian earth sciences >A pilot model for neogene and paleogene bivalve cenozones of the Northwestern Pacific
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A pilot model for neogene and paleogene bivalve cenozones of the Northwestern Pacific

机译：西北太平洋新近纪和古近代双壳类重氮烯的先导模型

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摘要

By means of taxonomically and geochronologically revised species lists (a total of 793 valid species of bivalve molluscs were considered) from 178 formations ('Suites') of Neogene and Paleogene deposits in the Russian Far East and characteristic and index species distinguished on this basis, the molluscan cenozones are established. These allow the construction of a preliminary stratigraphical scheme for the northwestern Pacific (western and eastern Kamchatka, south and north Sakhalin, Koryak 0Upland). The following cenozones are established: 1 — extant species; 2 — Fortipecten takahashii-Yoldia (Cnesterium) kuluntunensis; 3 — Acila (Truncacila) marujamensis-Lucinoma acutilineata; 4 — Mya cuneiformis-Acila (Truncacila) gottschei; 5 — Mytilus (Tumidimytilus) tichanovitchi — Macoma osakaensis; 6 — Megayoldia (Hataiyoldia) tokunagai-Neilonella (Borissia) sakhalinensis; 7 — Periploma (Aelga) besshoensis-Yoldia (Yoldia) kovatschen-sis; 8 — Papyridea (Profulvia) harrimani-Ciliatocardium asagaiense; 9 — Megayoldia (Portlandella) watasei — Yoldia (Nampiella) takaradaiensis; 10 — Nuculana (Saccella) gabbii-Corbula (Cuneocorbula) formosa; 11 — Lucina washingtonensis — Nuculana (Saccella) alaeformis. On the basis of bivalve distribution patterns, it is assumed that the boundary between the Neogene and the Paleogene lies at the base of the Kuluven Horizon in western Kamchatka, the base of the lower Nevelisk sub-Horizon in south Sakhalin and at the lower part of the Pakhachin Horizon in eastern Kamchatka and Koryak Upland.
机译：通过分类学和地理年代学修订的物种清单（共考虑了793种有效的双壳软体动物物种），来自俄罗斯远东地区的新近系和古近系矿床的178个地层（“套房”），并在此基础上区分了特征和索引物种，建立了软体动物七烯酮。这些都可以为西北太平洋（堪察加西部和东部，萨哈林岛南部和北部，科里亚克0高地）建立初步的地层方案。建立了以下七烯酮：1-现有物种； 2-kuluntunensis高齿Fortipecten高粱-Yoldia（Cnesterium）； 3-阿库拉（Truncacila）marujamensis-Lucinoma acutilineata； 4-楔形Mya cuneiformis-Acila（Truncacila）gottschei； 5-Mytilus（Tumidimytilus）tichanovitchi-大阪Macoma； 6-萨哈林州的大叶菊（Hataiyoldia）tokunagai-Neilonella（Borissia）； 7-besshoensis-Yoldia（Yeldia）kovatschen-sis； 8-纸莎草（Profulvia）harrimani-Ciliatocardium asagaiense； 9-瓦塔青霉（Portlandella）watasei-takaradaiensis的Yoldia（Nampiella）； 10-福尔摩沙的Nuculana（Saccella）gabbii-Corbula（Cuneocorbula）； 11-露西娜·华盛顿（Lucina washingtonensis）-睡莲（Saccella）。根据双壳类的分布模式，假定新近系与古近系之间的边界位于堪察加西部的库鲁文地平线的底部，萨哈林岛南部的下部Nevelisk副地平线的底部以及该地区的下部。堪察加半岛东部的Pakhachin Horizo​​n和Koryak高地。

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