PLATY QUARTZ PHYTOLITHS FOUND IN THE FOSSIL FOREST DEPOSITS, AXEL-HEIBERG ISLAND, NORTHWEST-TERRITORIES, CANADA

被引：3

作者：

KODAMA, H ^{[1
]}

FOX, CA ^{[1
]}

TARNOCAI, C ^{[1
]}

LONGSTAFFE, FJ ^{[1
]}

机构：

[1] UNIV WESTERN ONTARIO,DEPT GEOL,LONDON N6A 5B7,ONTARIO,CANADA

来源：

ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE | 1992年 / 155卷 / 5-6期

关键词：

D O I：

10.1002/jpln.19921550509

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The occurrence of quartz particles having a platy morphology found in the white layers within the fossil forest deposits of Axel Heiberg Island, was further confirmed by optical and electron microscopic examinations. The platy quartz crystals were concentrated in the finer fractions. The delta O-18 values of fractions enriched in platy quartz crystals ranged from +13.7 to +16.6 parts per thousand. These values were higher than those obtained for coarser fractions. The platy morphology and crystallographic character or the quartz particles concentrated in the finer size fractions are uncharacteristic both of aerosol derived material and of secondary silica. These findings and information available for the paleoenvironment of the study area favor a biogenic origin for the platy quartz. The oxygen-isotope data are consistent with this hypothesis.

引用

页码：401 / 406

页数：6

共 12 条

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