New Zealand Journal of Geology and Geophysics最新文献

{"title":"Performance analysis of P-wave detection algorithms for a community-engaged earthquake early warning system – a case study of the 2022 M5.8 Cook Strait earthquake","authors":"Chanthujan Chandrakumar, Marion Lara Tan, Caroline Holden, Max T. Stephens, Raj Prasanna","doi":"10.1080/00288306.2023.2284276","DOIUrl":"https://doi.org/10.1080/00288306.2023.2284276","url":null,"abstract":"Can a P-wave detection algorithm enhance the performance of an Earthquake Early Warning System (EEWS), particularly in community-engaged networks of low-cost ground motion sensors susceptible to no...","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138515582","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}

{"title":"Geochemical and isotopic characterisation of trench sediment at the Hikurangi Margin from IODP sites U1518 and U1520","authors":"Carlos R. Corella Santa Cruz, Susanne M. Straub, Georg F. Zellmer, Claudine H. Stirling, Malcolm R. Reid, David Barr, Candace E. Martin, Marco Brenna, Karoly Nemeth","doi":"10.1080/00288306.2023.2280031","DOIUrl":"https://doi.org/10.1080/00288306.2023.2280031","url":null,"abstract":"The composition of trench sediment at convergent margins exhibits strong compositional links to the corresponding arc magmas. To test for the existence of such links at the Hikurangi margin, we pro...","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138515559","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}

{"title":"Detrital gold morphology and recycling around the early Miocene St Bathans paleovalley, Central Otago, New Zealand","authors":"Marshall Palmer, Dave Craw","doi":"10.1080/00288306.2023.2284281","DOIUrl":"https://doi.org/10.1080/00288306.2023.2284281","url":null,"abstract":"The St Bathans paleovalley developed as a major southwest-draining fluvial system during early Miocene rejuvenation of the Central Otago landscape. Rounded quartz pebbles and detrital gold were rec...","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138515569","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}

{"title":"Contemporaneous alkaline and subalkaline intraplate magmatism in the Dunedin Volcanic Group, NZ, caused by mantle heterogeneity","authors":"Laura J. E. Wilson, E. Giacalone, James M. Scott, Marco Brenna, James D. L. White, Petrus J. le Roux, Sidney R. Hemming, Marshall C. Palmer, Stephen E. Read, Malcolm R. Reid, Claudine H. Stirling","doi":"10.1080/00288306.2023.2277443","DOIUrl":"https://doi.org/10.1080/00288306.2023.2277443","url":null,"abstract":"Monogenetic volcanism in the Maniototo Basin in the Dunedin Volcanic Group was unusual because the eroded lavas, plugs and dikes comprise spatially and temporally restricted silica-saturated and si...","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138515600","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}

{"title":"Towards a tectonic framework for normal faults in Waitematā Group rocks, North Island, Aotearoa-New Zealand","authors":"Kerensa J. Jennings, James D. Muirhead, K. Bernhard Spörli, Lorna J. Strachan","doi":"10.1080/00288306.2023.2268010","DOIUrl":"https://doi.org/10.1080/00288306.2023.2268010","url":null,"abstract":"Analyses of active and past normal fault behaviour in extensional settings provide key insights into regional-scale tectonic processes driven by plate boundary forces. To better understand past tectonic environments in the Tāmaki Makaurau-Auckland region of northern Aotearoa-New Zealand, we examine normal faults with Miocene to Quaternary movements dissecting the Early Miocene Waitematā Group. Structural data were collected from coastal outcrops, including fault geometry and kinematics, and reveal a dominant NE-trending strike direction, indicating NW-SE extension. Faults dissecting coeval and younger Waitākere Group rocks west of the study site exhibit the same NE-striking fabric, and thus may represent the westward continuation of Waitematā Group extensional structures. Furthermore, a NE-trending normal fault fabric is present within the adjacent Taranaki Basin, suggesting that the observed extension in the Waitematā Group was widespread over northern Aotearoa, with some extension still occurring today in southern parts of the Taranaki Basin. We propose that many of the observed normal faults in the Waitematā Group represent the northern portion of the Taranaki Basin fault system, with the Taranaki faults likely representing the younger continuation of the extension recorded in the Waitematā Basin, resulting from the migration of back-arc extension due to roll-back of the Hikurangi subduction margin.","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135825474","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}

{"title":"Paleoearthquakes at the junction of the Tokomaru and Northern Ōhāriu faults, implications for fault interactions in the southern North Island, New Zealand","authors":"Genevieve L. Coffey, Robert M. Langridge, Nicola J. Litchfield, Russ J. Van Dissen, Kate J. Clark","doi":"10.1080/00288306.2023.2263403","DOIUrl":"https://doi.org/10.1080/00288306.2023.2263403","url":null,"abstract":"ABSTRACTThe Tokomaru Fault extends along the west side of the southern North Island of New Zealand. Given the fault’s proximity to major and expanding population centres, new work was undertaken to understand its contribution to seismic hazard in the Wellington-Levin corridor. Two paleoseismic trenches excavated across the southern end of the Tokomaru Fault, close to its junction with the Northern Ōhāriu Fault, show that it and the Northern Ōhāriu Fault are more active than previously thought. Ages of the two youngest events on the Tokomaru Fault are 93–220 and 1179–1254 cal yr BP, and result in a recurrence interval of 470–2300 years. These ages agree with the two youngest events on the Ōhāriu Fault and the timing of some events on the Wellington Fault. This suggests that the Tokomaru, Northern Ōhāriu, Ōhāriu, and Wellington faults may have ruptured together in the past, have triggered earthquakes on each other, or host slip that is triggered by larger nearby earthquakes. The results of this work illustrate the importance of fault interactions in the southern North Island and show that even if faults here do not rupture together, they likely play a key role in influencing the earthquake behaviour of each other.KEYWORDS: Northern Ōhāriu FaultTokomaru FaultHorowhenuaKāpiti Coastearthquakepaleoseismic trenchingrecurrence intervalfault interactions AcknowledgementsWe would like to thank Daniel and Rebecca Kilsby-Halliday, and Blair and Anna Robinson for access and allowing us to excavate on their land. This work was undertaken as part of the It’s Our Fault programme and we are grateful to Toka Tū Ake EQC, the Wellington Regional Management Group and Wellington City Council for funding this work. This project was supported by the New Zealand Ministry of Business, Innovation and Employment (MBIE) through the Hazards and Risk Management programme (Strategic Science Investment Fund, contract C05X1702). We would also like to thank, Andy Dodd for his archaeological assessment, Danielle Willis for help with the UAV survey at Makahika, Dr Ningsheng Wang for processing the OSL samples, and the team in the Rafter Laboratory at GNS for the analysis of radiocarbon samples. We thank Pilar Villamor and Dougal Townsend for their useful feedback on this manuscript. We also thank the anonymous reviewer and Jack Williams for their useful edits and comments on this manuscript during the review process.Data availability statementThe data supporting the findings of this study are available within the article and its supplementary materials, which have been uploaded on Figshare (dx.doi.org/10.6084/m9.figshare.6025748).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Ministry of Business, Innovation and Employment and also supported by “Its Our Fault”.","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135045600","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}

{"title":"Structural evolution, segmentation and activity of the onshore-offshore Waimea-Flaxmore Fault System in south-eastern Tasman Bay, South Island, New Zealand","authors":"Francesca C. Ghisetti, Mike R. Johnston, Paul Wopereis, Richard H. Sibson","doi":"10.1080/00288306.2023.2260768","DOIUrl":"https://doi.org/10.1080/00288306.2023.2260768","url":null,"abstract":"ABSTRACTThe Waimea-Flaxmore Fault System (W-FFS) from the Nelson-Richmond urban area to D’Urville Island is analysed through six regional transects that join depth-converted seismic lines in Tasman Bay to onshore cross sections. Reverse reactivation of basement faults of the W-FFS by mechanisms of fault-propagation folding at c. 19-10 Ma occurred along the entire length of the fault system. However, the W-FFS remained Quaternary active only from the vicinity of Cape Soucis southwards into onshore Nelson, in contrast with cessation of activity along eastern Tasman Bay since 7 Ma. The inactive western faults of the W-FFS are buried below Plio-Quaternary marine sediments and segmented by the newly identified, c. E-W, Croisilles Fault Zone, Cross Point and D’Urville faults, with cumulative dextral offset of c. 27 km. The c. E-W faults extend from the onshore into Tasman Bay and are interpreted as the northernmost Late Miocene strands of the Marlborough Fault System that have accommodated incipient distributed shear in the crustal block north of the Queen Charlotte Fault Zone. Segmentation and along-strike changes of the W-FFS occur at the transition from the contractional domain of onshore Nelson to the northern Marlborough strike-slip domain, driven by large-scale kinematics of the Australia-Pacific plate boundary.KEYWORDS: Waimea-Flaxmore Fault SystemActive faultsFoldsSeismic linesNelsonTasman BayD’urville IslandMarlboroughSouth IslandNew Zealand AcknowledgementsWe thank I. Hamling for providing data on InSAR measurements in Tasman Bay and J. Ristau for help with locating some earthquakes in Tasman Bay. Comments and suggestions of P. Barnes, G. Browne, D. Eberhart-Phillips and S. Nodder greatly improved an early draft of the paper. We gratefully acknowledge the editorial revisions and constructive criticism provided by J. Scott, H. Seebeck and an anonymous reviewer.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementData that support the findings of this study are provided in Supplemental File 1 (detailed description of the geological setting of the Waimea-Flaxmore Fault System in Nelson City, with accompanying geological map and cross sections of Figure S1-1); Supplemental File 2 (large format tiff files of geological transects T1-T6 all reproduced at the same scale); and Supplemental File 3 (discussion on the role of mechanical weakness and fluid overpressure on reactivation of the inherited faults of the Waimea-Flaxmore Fault System, with accompanying Figure S3-1). The supplementary material is openly available in figshare at https://doi.org/10.6084/m9.figshare.23612340.v1.Additional informationFundingThis work was privately funded by TerraGeologica. Nelson City Council and Tasman District Council funded acquisition of the Map Publisher (Avenza System) software, used for geological mapping.","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135645057","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}

{"title":"Geometry and deformation of the sole of a large obducted ophiolitic unit: insights from surface geology and airborne electromagnetics – Peridotite Nappe, New Caledonia","authors":"Benjamin Le Bayon, Pierre Maurizot, Pierre-Alexandre Reninger, Stéphane Lesimple, Marion Iseppi, Lilian Alizert, José Perrin, Renjie Zhou","doi":"10.1080/00288306.2023.2239187","DOIUrl":"https://doi.org/10.1080/00288306.2023.2239187","url":null,"abstract":"","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135981791","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}

{"title":"A diverse Late Pliocene fossil fauna and its paleoenvironment at Māngere, Auckland, New Zealand","authors":"B. Hayward, Thomas F. Stolberger, N. Collins, A. Beu, W. Blom","doi":"10.1080/00288306.2023.2243234","DOIUrl":"https://doi.org/10.1080/00288306.2023.2243234","url":null,"abstract":"","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41510212","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}

{"title":"Hydrogeological controls on formation of Patearoa saline site in Central Otago, New Zealand and definition of geoecological salt lines","authors":"D. Craw, C. Rufaut, S. Read, Dhanashree Pillai","doi":"10.1080/00288306.2023.2246916","DOIUrl":"https://doi.org/10.1080/00288306.2023.2246916","url":null,"abstract":"","PeriodicalId":49752,"journal":{"name":"New Zealand Journal of Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43621236","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}