dc.contributor.author |
Campbell, Kathleen |
en |
dc.contributor.author |
Buddle, Timothy |
en |
dc.contributor.author |
Browne, Patrick |
en |
dc.coverage.spatial |
Univ Aberdeen, Aberdeen, SCOTLAND |
en |
dc.date.accessioned |
2014-11-03T01:18:43Z |
en |
dc.date.issued |
2003 |
en |
dc.identifier.citation |
Transactions of the Royal Society of Edinburgh: Earth and Environmental Science, 2003, 94 (4), pp. 485 - 501 |
en |
dc.identifier.issn |
0263-5933 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/23397 |
en |
dc.description.abstract |
The Tahunaatara sinter, Taupo Volcanic Zone, New Zealand, is a similar to17-20-kyr-old hot-spring deposit of opal-A mineralogy. It is interbedded with fluvial, lacustrine and volcaniclastic sediments, some silicified by infusing thermal waters. The exposed sinter (similar to4 m thick, 90 m long) was truncated at its southern margin by a landslide, which deposited a conglomerate (up to 2 m thick, 56 m long) of sinter blocks and associated strata nearby. Kaolinite-rich cobbles at the base of the conglomerate indicate a change in the thermal regime and its probable trigger: acid steam-condensate produced alteration. Clasts in the landslide are oriented SW, the same direction as flattened plant reeds entombed in sinter, and as intercalated fluvial beds. Thus, thermal waters, stream flow and the landslide all likely followed the same palaeo-valley, which is similar in terrain and stratigraphy to the Devonian Rhynie hydrothermal system. The plant-rich, layered, in situ sinter contains fossilised microbes and rare stromatolites. and was deposited on mid- to distal slopes adjacent to marshes. Ash falls, fluvial activity and ponding occurred during and after the thermal activity. Unsilicified tephric Ohakea loess (similar to26-17 kyr BP) and Taupo Tephra (1.86 kyr BP) blanket both sinter and landslide. Today, the deposits form resistant remnants in a topographically inverted landscape. |
en |
dc.language |
EN |
en |
dc.relation.ispartofseries |
Transactions of the Royal Society of Edinburgh: Earth and Environmental Science |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://journals.cambridge.org/action/displaySpecialPage?pageId=4608 http://www.sherpa.ac.uk/romeo/issn/0263-5933/ |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.subject |
hot-spring deposit |
en |
dc.subject |
inverted topography |
en |
dc.subject |
opal-A |
en |
dc.subject |
steam condensate alteration |
en |
dc.subject |
THERMAL-SPRING DEPOSITS |
en |
dc.subject |
NORTH-ISLAND |
en |
dc.subject |
HOT-SPRINGS |
en |
dc.subject |
LOW-TEMPERATURE |
en |
dc.subject |
OPAL-A |
en |
dc.subject |
STRATIGRAPHY |
en |
dc.subject |
RHYNIE |
en |
dc.subject |
ABERDEENSHIRE |
en |
dc.subject |
SEDIMENTOLOGY |
en |
dc.title |
Late Pleistocene siliceous sinter associated with fluvial, lacustrine, volcaniclastic and landslide deposits at Tahunaatara, Taupo Volcanic Zone, New Zealand |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1017/S0263593300000833 |
en |
pubs.issue |
4 |
en |
pubs.begin-page |
485 |
en |
pubs.volume |
94 |
en |
pubs.end-page |
501 |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
en |
pubs.elements-id |
7841 |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
School of Environment |
en |
pubs.record-created-at-source-date |
2010-09-01 |
en |