摘要:

Results of a reconnaissance geological survey off northernmost New Zealand indicate off-shore extension of its rocks and structures for at least 100 miles to the north-west. Geological samples from the continental shelf suggest that it has been carved by marine erosion relatively early in the Pleistocene.

ISSN:0028-8306    

DOI:10.1080/00288306.1969.10420296

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

The Wisconsin Range consists mainly of a composite batholith of Late Precambrian and Early Paleozoic age. It is one of several batholiths that constitute the core of the Transantarctic Mountains. The batholithic rocks are flanked by the metamorphosed greywackes and argillites of the La Gorce Formation and the metavolcanic rocks of the Wyatt Formation that were deposited in the Ross geosyncline in Precambrian time. The metasedimentary and metavolcanic rocks were metamorphosed and partially reconstituted into granitic rocks during the Late Precambrian Mawson Orogeny. The resultant polygenetic batholithic complex ranges in composition from granite to quartz diorite, and has both foliated and massive facies. Some facies are characterised by abundant porphyroblasts of rapakivi feldspars. Tourmaline granite and porphyritic quartz monzonite make up other facies of the complex. The various facies have both gradational and intrusive relations with each other.

ISSN:0028-8306    

DOI:10.1080/00288306.1969.10420297

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

Spiral or planar radiate imprints, described asZoophycos, Taonurus, Spirophyton,Physophycus, Cancellophycus,andGlossophycusare regarded as fossil prostomia of sedentary marine worms of the Sabellidae. Methods for the study and description of these fossils, consistent with this mode of origin, are described.

ISSN:0028-8306    

DOI:10.1080/00288306.1969.10420298

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

Review of the marine gastropod superfamily Pyramidellacea shows that New Zealand faunas present significant nomenclatural problems. Clarification of subjective nomenclatural difficulties must await monographic study. Objective problems are briefly rectified below.

ISSN:0028-8306    

DOI:10.1080/00288306.1969.10420299

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

Volume S of this series comprises an introduction to echinoderms and systematic descriptions of fossil Homalozoa and Crinozoa. Following the standard editorial preface, the introductory section contains two papers of importance to all students of the Echinodermata, whether dealing with fossil or recent material. The first article, by Ubaghs, is an essay on the general characters of the phyllum, and although it is only just over 50 pages in length it is quite remarkable in scope and detail. Several planes of bilateral symmetry are recognised—to the dismay of those only. conversant with the Lovenian echinoid orientation—and those of Loven and Carpenter are correlated differently to the interpretation previously given in this series by Fell and Moore (1966). Ubaghs regards all homologies based on the various planes of reference as not proven and also regards Fell's analogy betwen somasteroid virgulia and crinoid pinnulate arms as rather superficial. He notes that associated Lower Ordovician crinoids and somasteroids appear more distinct than their extant relatives. The Echinodermata are divided into the four subphyla Homalozoa, Crinozoa, Asterozoa, and Echinozoa, and the included classes are discussed. All classes are assumed to have become differentiated by the early Paleozoic or earlier. If a bilaterally symmetrical pre-echinoderm form existed a pre-Cambrian time is assumed for it. The affinities of the phylum are discussed and all known echinoderms are regarded as too specialised to have given rise to another phylum. Alleged affinities between “carpoids” and larval Amphioxus and stylophorans (or cystoids) and ostracoderms are“ . . .based on superficial analogies or erroneous interpretations. . .” The fundamental distinctions between echinoderm stereom and vertebrate bone are emphasised. (In Millott 1967, stylophorans are regarded as chordates, and a sipunculoid ancestor for the echinoderms is discussed).

ISSN:0028-8306    

DOI:10.1080/00288306.1969.10420300

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0028-8306    

DOI:10.1080/00288306.1969.10420301

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0028-8306    

DOI:10.1080/00288306.1969.10420302

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor