Foraminifera from the Mahoenui Group North Wanganui basin
The Mahoenui Group is a body of Oligocene and early Miocene marine clastic sedimentary rock in which two formations are recognized. The first, the Taumatamaire Formation (Happy, 1971) consists of up to 1000m of blue grey calcareous mudstone together with two minor limestones, the Awakino Limestone M...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | English |
Published: |
ResearchSpace@Auckland
1978
|
Subjects: | |
Online Access: | http://hdl.handle.net/2292/2574 |
id |
ftunivauckland:oai:researchspace.auckland.ac.nz:2292/2574 |
---|---|
record_format |
openpolar |
spelling |
ftunivauckland:oai:researchspace.auckland.ac.nz:2292/2574 2023-05-15T18:00:57+02:00 Foraminifera from the Mahoenui Group North Wanganui basin Topping, Robert Mark Dr. Graham Gibson 1978 Scanned from print thesis http://hdl.handle.net/2292/2574 en eng ResearchSpace@Auckland PhD Thesis - University of Auckland UoA218573 Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm Copyright: The author Fields of Research::260000 Earth Sciences::260100 Geology Thesis 1978 ftunivauckland 2013-12-07T08:34:54Z The Mahoenui Group is a body of Oligocene and early Miocene marine clastic sedimentary rock in which two formations are recognized. The first, the Taumatamaire Formation (Happy, 1971) consists of up to 1000m of blue grey calcareous mudstone together with two minor limestones, the Awakino Limestone Member (Hay, 1967) and the Black Creek Limestone Member (new name). The second Formation, the Taumarunui Formation (Nelson & Hume, 1977) is made up of 1000m of flysch. Two facies types are seen in the flysch, the proximal and distal flysch facies. 350 species of Foraminifera are recorded in 167 samples from 47 sections. Their systematics are discussed and many are illustrated using scanning electron photomicrographs. 11 new species are recognised in the genera, Almaena, Anomalina, Epistominella, Gavelinopsis, Globocassidulina, Guttulina, Lamarckina, Lenticulina, Melonis and Verneuilina. One new subspecies of Bolivina reticulata is also recognised. These are not formally named here but will be described in papers to be published later. An appraisal of numerical techniques in taxonomy is made while considering the Globigerina woodi "group" from the Mahoenui. This supports the validity of 5 species of planktonic Foraminifera from New Zealand and illustrates the advantages and disadvantages of numerical classification. The paleoecology and paleobathymetry of the samples is investigated using both conventional and numerical methods. These two approaches are compared, contrasted and then integrated to form a paleogeographic reconstruction. Thesis Planktonic foraminifera University of Auckland Research Repository - ResearchSpace New Zealand |
institution |
Open Polar |
collection |
University of Auckland Research Repository - ResearchSpace |
op_collection_id |
ftunivauckland |
language |
English |
topic |
Fields of Research::260000 Earth Sciences::260100 Geology |
spellingShingle |
Fields of Research::260000 Earth Sciences::260100 Geology Topping, Robert Mark Foraminifera from the Mahoenui Group North Wanganui basin |
topic_facet |
Fields of Research::260000 Earth Sciences::260100 Geology |
description |
The Mahoenui Group is a body of Oligocene and early Miocene marine clastic sedimentary rock in which two formations are recognized. The first, the Taumatamaire Formation (Happy, 1971) consists of up to 1000m of blue grey calcareous mudstone together with two minor limestones, the Awakino Limestone Member (Hay, 1967) and the Black Creek Limestone Member (new name). The second Formation, the Taumarunui Formation (Nelson & Hume, 1977) is made up of 1000m of flysch. Two facies types are seen in the flysch, the proximal and distal flysch facies. 350 species of Foraminifera are recorded in 167 samples from 47 sections. Their systematics are discussed and many are illustrated using scanning electron photomicrographs. 11 new species are recognised in the genera, Almaena, Anomalina, Epistominella, Gavelinopsis, Globocassidulina, Guttulina, Lamarckina, Lenticulina, Melonis and Verneuilina. One new subspecies of Bolivina reticulata is also recognised. These are not formally named here but will be described in papers to be published later. An appraisal of numerical techniques in taxonomy is made while considering the Globigerina woodi "group" from the Mahoenui. This supports the validity of 5 species of planktonic Foraminifera from New Zealand and illustrates the advantages and disadvantages of numerical classification. The paleoecology and paleobathymetry of the samples is investigated using both conventional and numerical methods. These two approaches are compared, contrasted and then integrated to form a paleogeographic reconstruction. |
author2 |
Dr. Graham Gibson |
format |
Thesis |
author |
Topping, Robert Mark |
author_facet |
Topping, Robert Mark |
author_sort |
Topping, Robert Mark |
title |
Foraminifera from the Mahoenui Group North Wanganui basin |
title_short |
Foraminifera from the Mahoenui Group North Wanganui basin |
title_full |
Foraminifera from the Mahoenui Group North Wanganui basin |
title_fullStr |
Foraminifera from the Mahoenui Group North Wanganui basin |
title_full_unstemmed |
Foraminifera from the Mahoenui Group North Wanganui basin |
title_sort |
foraminifera from the mahoenui group north wanganui basin |
publisher |
ResearchSpace@Auckland |
publishDate |
1978 |
url |
http://hdl.handle.net/2292/2574 |
geographic |
New Zealand |
geographic_facet |
New Zealand |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
PhD Thesis - University of Auckland UoA218573 |
op_rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm Copyright: The author |
_version_ |
1766170238538219520 |