New Zealand Journal of Geology and Geophysics最新文献_第7页

Age and structure of the Permian Brook Street Terrane, Takitimu Mountains, New Zealand 新西兰Takitimu山脉二叠纪布鲁克街地体的年龄和结构

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-07-31 DOI: 10.1080/00288306.2022.2105903

M. J. Campbell, N. Mortimer, G. Rosenbaum, C. Allen, P. Vasconcelos, H. Campbell

{"title":"Age and structure of the Permian Brook Street Terrane, Takitimu Mountains, New Zealand","authors":"M. J. Campbell, N. Mortimer, G. Rosenbaum, C. Allen, P. Vasconcelos, H. Campbell","doi":"10.1080/00288306.2022.2105903","DOIUrl":"https://doi.org/10.1080/00288306.2022.2105903","url":null,"abstract":"ABSTRACT We use a recently completed airborne magnetic and gamma-ray spectrometric survey, and new U/Pb and 40Ar/39Ar age determinations, to revise and clarify several aspects of Brook Street Terrane geology in the Takitimu Mountains. Steeply dipping and homoclinal Permian Takitimu Subgroup formations defined in the central part of the range can, with moderate confidence, be traced along strike to other parts of the range where they are more complexly folded and faulted. We report intrusion ages for three Brook Street plutonic suites: pyroxene-bearing White Hill Intrusives (306-270 Ma, U/Pb zircon), amphibole-bearing Mackinnon Peak Intrusives (261 ± 1 Ma, 40Ar/39Ar amphibole), and shoshonitic Wether Hill Dikes (254 ± 1 Ma, 40Ar/39Ar plagioclase). Geological relationships between these intrusions and the host Takitimu Subgroup reinforce the Early Permian age of the latter, which is distinct from the overlying Late Permian Productus Creek Group. The Wether Hill Dikes mark the cessation of igneous activity in the Brook Street Terrane at c. 254 Ma. A large (n = 499) dataset of detrital zircon U/Pb ages from the nonmarine Jurassic Barretts Formation confirms a local Median Batholith-Tuhua Intrusives provenance and supports a post-Permian fore-arc tectonic setting along the Gondwana margin.","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":"66 1","pages":"478 - 494"},"PeriodicalIF":2.2,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42992937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Foraminiferal evidence for the provenance and flow history of turbidity currents triggered by the 2016 Kaikōura Earthquake, New Zealand 2016年新西兰凯库拉地震引发的浊流来源和流动历史的有孔虫证据

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-07-27 DOI: 10.1080/00288306.2022.2103157

B. Hayward, Ashwaq T. Sabaa, J. Howarth, A. Orpin, L. Strachan

引用次数: 1

Depositional rate, grain size and magnetic mineral sulfidization in turbidite sequences, Hikurangi Margin, New Zealand 新西兰Hikurangi边缘浊积岩层序中的沉积速率、粒度和磁性矿物硫化作用

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-07-21 DOI: 10.1080/00288306.2022.2099910

A. Noda, A. Greve, A. Woodhouse, M. Crundwell

引用次数: 2

Biostratigraphically constrained chronologies for Quaternary sequences from the Hikurangi margin of north-eastern Zealandia 西兰迪亚东北部Hikurangi边缘第四纪序列的生物地层学约束年代学

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-07-20 DOI: 10.1080/00288306.2022.2101481

M. Crundwell, A. Woodhouse

引用次数: 7

Trench floor depositional response to glacio-eustatic changes over the last 45 ka, northern Hikurangi subduction margin, New Zealand 新西兰北部Hikurangi俯冲边缘海沟底沉积对近45 ka冰川-隆起变化的响应

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-07-20 DOI: 10.1080/00288306.2022.2099432

A. Woodhouse, P. Barnes, Anthony Shorrock, L. Strachan, M. Crundwell, H. Bostock, J. Hopkins, S. Kutterolf, K. Pank, E. Behrens, A. Greve, R. Bell, A. Cook, K. Petronotis, L. Levay, R. A. Jamieson, T. Aze, L. Wallace, D. Saffer, I. Pecher

引用次数: 3

Taupō volcano’s restless nature revealed by 42 years of deformation surveys, 1979–2021 1979年至2021年42年的变形调查揭示了陶普火山的不安本质

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-07-11 DOI: 10.1080/00288306.2022.2089170

P. Otway, F. Illsley‐Kemp, E. Mestel

引用次数: 0

Catalogue of 2001–2011 New Zealand earthquakes relocated with 3-D seismic velocity model and comparison to 2019–2020 auto-detected earthquakes in the sparsely instrumented southern South Island 用三维地震速度模型重新定位2001-2011年新西兰地震目录，并与南岛南部仪器稀少的2019-2020年自动检测地震进行比较

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-06-30 DOI: 10.1080/00288306.2022.2089171

D. Eberhart‐Phillips, M. Reyners

{"title":"Catalogue of 2001–2011 New Zealand earthquakes relocated with 3-D seismic velocity model and comparison to 2019–2020 auto-detected earthquakes in the sparsely instrumented southern South Island","authors":"D. Eberhart‐Phillips, M. Reyners","doi":"10.1080/00288306.2022.2089171","DOIUrl":"https://doi.org/10.1080/00288306.2022.2089171","url":null,"abstract":"ABSTRACT Here we update a catalogue of 2001–2011 New Zealand earthquakes relocated with a 3-D seismic velocity model, which has recent improvements. We use P- and S-wave arrival times from earthquakes during 2001–2011 as these were manually picked with assigned quality. We demonstrate the usefulness of the catalogue by considering results from the southern South Island where GeoNet seismograph spacing is large. Later phase data used automatic picking and processing of arrival times. We relocate the 2019–2020 data from National Geohazards Monitoring Centre (NGMC) and compare seismicity patterns to consider its usefulness. We find that the auto-detected crustal earthquakes are more sparse in most of the southern South Island compared to the earlier analyst-picked data period, including Fiordland, which is one of the most seismically active areas in New Zealand. The auto-detected seismicity pattern is also problematic at greater depth and does not show a seismicity band in the lower crust across Southland evident in 2001–2011 data. The detection capability could be improved with a much denser permanent network. We recommend that the 2001–2011 relocated catalogues be used in studies of tectonics and seismic hazard across the South Island, and in studies that consider New Zealand wide seismicity patterns.","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48185585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Latest Cretaceous and Paleocene biostratigraphy and paleogeography of northern Zealandia, IODP Site U1509, New Caledonia Trough, southwest Pacific 新西兰北部最新白垩纪和古新世生物地层和古地理，IODP站点U1509，新喀里多尼亚海槽，西南太平洋

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-06-27 DOI: 10.1080/00288306.2022.2090386

E. Crouch, C. Clowes, J. Raine, L. Alegret, M. Cramwinckel, R. Sutherland

引用次数: 2

Tsunami or storm deposit? A late Holocene sedimentary record from Swamp Bay, Rangitoto ki te Tonga/D’Urville Island, Aotearoa – New Zealand 海啸还是风暴沉积？新西兰奥特亚汤加兰吉托岛沼泽湾/D’Urville岛的全新世晚期沉积记录

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-06-22 DOI: 10.1080/00288306.2022.2087692

D. King, K. Clark, C. Chagué, Xun Li, E. Lane, B. McFadgen, Jarom Hippolite, Peter Meihana, Billy Wilson, J. Dobson, Pene Geiger, Hamuera Robb, D. Hikuroa, Shaun Williams, R. Morgenstern, F. Scheele

{"title":"Tsunami or storm deposit? A late Holocene sedimentary record from Swamp Bay, Rangitoto ki te Tonga/D’Urville Island, Aotearoa – New Zealand","authors":"D. King, K. Clark, C. Chagué, Xun Li, E. Lane, B. McFadgen, Jarom Hippolite, Peter Meihana, Billy Wilson, J. Dobson, Pene Geiger, Hamuera Robb, D. Hikuroa, Shaun Williams, R. Morgenstern, F. Scheele","doi":"10.1080/00288306.2022.2087692","DOIUrl":"https://doi.org/10.1080/00288306.2022.2087692","url":null,"abstract":"ABSTRACT Informed by Māori oral histories that refer to past catastrophic marine inundations, multi-proxy analysis of stratigraphic records from Swamp Bay, Rangitoto ki te Tonga (D’Urville Island) shows evidence of an anomalous deposit extending some 160 m inland. The deposit includes two distinct lithofacies. The lower sand unit is inferred to have been transported from the marine environment, with corresponding increases in the percentages of benthic marine and brackish–marine diatoms, and geochemical properties indicative of sudden changes in environmental conditions. Radiocarbon dating indicates the deposit formation is less than 402 yrs BP, and pollen indicates it is unlikely to be younger than 1870 CE. Core stratigraphy age models and co-seismic chronologies point to the marine unit most likely being emplaced by tsunami transport associated with rupture of the Wairarapa Fault in 1855 CE. The overlying unit of gravel and silt is inferred to be fluvial deposit and slope-wash from the surrounding hills, loosened by ground-shaking following the earthquake. These findings indicate the 1855 CE earthquake may have been more complex than previously thought and, or, available tsunami modelling does not fully capture the local complexities in bathymetry and topography that can cause hazardous and localized tsunami amplification in embayments like Swamp Bay.","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49371071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An initial assessment of short-term eruption forecasting options in New Zealand 新西兰短期火山喷发预测方案的初步评估

IF 2.2 4区地球科学

New Zealand Journal of Geology and Geophysics Pub Date : 2022-05-29 DOI: 10.1080/00288306.2022.2080236

Melody G. Whitehead, M. Bebbington, J. Procter, M. Irwin, G. Viskovic

{"title":"An initial assessment of short-term eruption forecasting options in New Zealand","authors":"Melody G. Whitehead, M. Bebbington, J. Procter, M. Irwin, G. Viskovic","doi":"10.1080/00288306.2022.2080236","DOIUrl":"https://doi.org/10.1080/00288306.2022.2080236","url":null,"abstract":"ABSTRACT There are currently no quantitative short-term eruption forecasts based on peer-reviewed and validated models that are operational for New Zealand’s volcanoes. Specific forecasts produced for work-risk assessments are not generally publicised. During a volcanic crisis, eruption forecasts are demanded under high stress and time-restricted conditions. Many forecasting options exist but none are proven as universally viable, with testing and calibration limited to the hindcasting of specific events. Here, we compare the requirements of six methods with currently available data and monitoring capabilities at each of New Zealand’s volcanoes to determine which methods are currently feasible, as well as those options that may be implemented with additional effort or equipment. In New Zealand, the major limiting factor in method selection is the low number of past instrumentally monitored eruptions. This data gap may be filled by carefully selected analogue data from a global volcano set and expert knowledge. Event trees and the failure forecasting method may be set up at most volcanoes with minimal effort, but the latter can only forecast eruption onset time. Expert interpretation is the only method available in New Zealand for any forecast output type.","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46892919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2