MAGNETIC SPHERULES IN ARCTIC OCEAN SEDIMENTS

被引：4

作者：

BORNHOLD, BD

BONARDI, M

机构：

[1] GEOL SURVEY CANADA, CENT LABS, OTTAWA K1A 0E8, ONTARIO, CANADA

[2] GEOL SURVEY CANADA, ADM SERV, OTTAWA K1A 0E8, ONTARIO, CANADA

来源：

CANADIAN JOURNAL OF EARTH SCIENCES | 1979年 / 16卷 / 09期

关键词：

D O I：

10.1139/e79-163

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

5 types of spherules were found in Quaternary sediments from the Canada Abyssal Plain. They include; types A, spherules composed of magnetic and hematite surrounding metallic iron cores (Ni, Fe, Co) ; B, nearly pure homogeneous magnetite; C, displaying intergrowths of magnetite and hematite and containing minor Ti (less than 1%); D, composed predominantly of magnetite with significant amounts of Ti (up to 4.8%); and E, consisting of ilmenite and rutile with Ti, Si, Fe, Mn, Al, K and Mg as major elements and Cr, Ca, and Na as minor elements. The high Ti content of most of the spherules suggests a volcanic origin.-from Authors

引用

页码：1778 / 1788

页数：11

共 16 条

[1]

BORNHOLD BD, 1975, 751C GEOL SURV CAN P, P79

[2]

CASTAING R, 1958, GEOCHIM COSMOCHIM AC, V14, P114

[3] BLACK MAGNETIC SPHERULE FALLOUT IN EASTERN GULF OF MEXICO [J].