MAGNETIC STRATIGRAPHY OF PLIOCENE DEPOSITS OF THE GLENNS FERRY FORMATION, IDAHO, AND ITS IMPLICATIONS FOR NORTH-AMERICAN MAMMALIAN BIOSTRATIGRAPHY

被引：28

作者：

NEVILLE, C

OPDYKE, ND

LINDSAY, EH

JOHNSON, NM

机构：

[1] LAMONT DOHERTY GEOL OBSERV,PALISADES,NY 10964

[2] UNIV ARIZONA,DEPT GEOSCI,TUCSON,AZ 85721

[3] DARTMOUTH COLL,DEPT EARTH SCI,HANOVER,NH 03755

来源：

AMERICAN JOURNAL OF SCIENCE | 1979年 / 279卷 / 05期

关键词：

481 Geology and Geophysics - 504 Mines and Mining; Metal - 701 Electricity and Magnetism - 942 Electric and Electronic Measuring Instruments;

D O I：

10.2475/ajs.279.5.503

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Correlation of mammalian biostratigraphy with magnetic stratigraphy is here expanded to include terrigenous Pliocene deposits of the Glenns Ferry Formation of the western Snake River Plain. Weakly magnetized fine-grained sediments as well as basaltic lava flows are used to delineate a magnetic stratigraphy for the Glenns Ferry Formation extending from the Cochiti event of the Gilbert reversed epoch to the lowermost portion of the Matuyama epoch. Curie temperature analyses and isothermal remanent magnetization studies indicate that the dominant magnetic mineral in the sediment samples is Ti-rich magnetite, probably of detrital origin.

引用

页码：503 / 526

页数：24

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