摘要:

Two individual specimens (total weight 15.7 kg) of a new medium octahedrite were found near Ellicott, El Paso County, Colorado. The find is only 1.2 km from the find (in 1890) of the Franceville medium octahedrite. Ellicott and Franceville are distinct meteorites, the latter exhibiting pronounced differences in shock features, kamacite band width, andNi, Ga, Ge,andIrcontents. Ellicott is a group IA iron while Franceville is in group IIIA.

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01194.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

The Canyonlands meteorite weighing 1,520 grams was found near the confluence of the Green and Colorado Rivers, Utah, near lat 38°11′N.; long 109°53′W. It is a shocked, brecciated H6 chondrite containing large black veins which do not differ in composition from the main chondritic mass. A black fusion crust remains on part of the mete

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01195.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Spherules composed of magnetite were found throughout the state of New Jersey. Samples of coastal plain sands of Miocene age, beach sands, street sweepings, wind‐blown dust, river waters, and dust from the stack scrubber of a scrap iron foundry were carefully examined. Spherules were found in each of the samples representing recent environments and in ancient sediments sampled near the surface, but are absent from each of the wide variety of ancient sediments carefully sampled below about one meter. The spherule samples consistently contain 0.4–0.8 weight percentMnbut contain less than 0.1 weight percent Ni. It is concluded that virtually none of the spherules is of an extraterrestrial ori

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01196.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

We present here a somewhat simplified overview of the subject of magnetism in meteorites. A glossary of magnetism terminology is included, followed by discussion of the various techniques used for magnetism studies in meteorites. The generalized results from use of these techniques by workers in the field is described. A brief critical analysis is offered.

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01197.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01198.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01199.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01200.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1974.tb01201.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY