摘要:

Present knowledge of the occurrence, properties, and composition of tektites is reviewed; and the principal theories which have been advanced to explain their origin are critically discussed. Nininger's lunar impactite theory, modified in accordance with the suggestions of Varsavsky is most free from objection, but if Kopal's contention that tektites must have had an origin closer to the Earth is well founded, Hardcastle's plastic sweeping theory seems likely to repay closer attention than it has so far received.

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431321

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor

摘要:

Some fossils are recorded from hitherto undifferentiated Permian-Triassic-Jurassic greywacke sandstones and argillites near Auckland.Incceramuscf.galoiandBuchia ?malayamaoricafrom the Hunua Ranges andI.cf.galoifrom Ponui Island indicate an Upper Jurassic age for these rocks; a pelecypod resembling a PermianAtomodesmaor a JurassicInoceramusis recorded from Kawau Island.

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431322

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor

摘要:

The Warepan Stage is defined and the sequence at the type locality (Kaihiku Stream, South Otago) is described. Criteria for correlating beds in other sequences with those at the type locality are critically examined. Fossils described from Warepan horizons are listed.

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431323

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor

摘要:

This list gives details of samples dated in the Nuclear Sciences Laboratory, in the period from June 1956 to July 1958, and follows on from previously published results (Fergusson and Rafter, 1953, 1955, 1957).

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431324

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431325

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor

摘要:

An incomplete compartment of a whale-barnacle from the Waitotaran Stage of Waihua River, Hawke's Bay, is described asCoronula aotean.sp. It is considered to be a close relative of the living species,Coronula diadema(Linnaeus).

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431326

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor

摘要:

Descriptions, with optical and chemical data, are given of hornblende and cummingtonite from an amphibolite exposed at the south end of Ringaringa beach, near Half Moon Bay, Stewart Island. The minerals are compared with similarly associated hornblende and cummingtonite described in recent years from Finland, and analyses are plotted to show the extent of the suggested miscibility gap between hornblendes and cummingtonites associated with them. The paragenesis of the hornblende and cummingtonite is briefly discussed.

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431327

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor

ISSN:0028-8306    

DOI:10.1080/00288306.1959.10431328

出版商:Taylor & Francis Group    

年代:1959

数据来源: Taylor