A5072212509- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Seismic Waves and Analysis
- Seismology and Earthquake Studies
- Geophysical Methods and Applications
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Earthquake Detection and Analysis
- Maritime and Coastal Archaeology
- High-pressure geophysics and materials
- Marine Biology and Ecology Research
- Seismic Performance and Analysis
- Geological Formations and Processes Exploration
- Geotechnical Engineering and Underground Structures
- Marine and environmental studies
- Archaeology and ancient environmental studies
- Geological and Geophysical Studies Worldwide
- Geological and Geophysical Studies
- Groundwater flow and contamination studies
- Evolution and Paleontology Studies
- Geotechnical Engineering and Soil Mechanics
- Marine and coastal plant biology
- Paleontology and Evolutionary Biology
GNS Science
2014-2023
Crown Research Institutes
2006-2020
Alberta Environment and Protected Areas
2019
University of Derby
2003
University of Auckland
1982-1985
University of Otago
1982-1983
The Waipounamu Erosion Surface is a time-transgressive, nearly planar, wave-cut surface. It not peneplain. Formation of the began in Late Cretaceous time following break-up Gondwanaland, and continued until earliest Miocene time, during 60 million year period widespread tectonic quiescence, thermal subsidence marine transgression. Sedimentary facies geomorphological evidence suggest that erosion surface may have eventually covered New Zealand subcontinent (Zealandia). We can find no...
We formally introduce 14 new high-level stratigraphic names to augment existing and hierarchically organise all of New Zealand's onland offshore Cambrian–Holocene rocks unconsolidated deposits. The two highest-level units are Austral Superprovince (new) Zealandia Megasequence (new). These encompass the country's Cambrian–Early Cretaceous basement Late Cretaceous–Holocene cover sediments, respectively. Most constituents in current common usage: Eastern Western Provinces consist 12...
Abstract Holocene terraces at Turakirae Head on the south coast of North Island, New Zealand, record four recent earthquakes from simultaneous rupture Wairarapa Fault and flexure Rimutaka Anticline. The lowest tread riser is modern marine platform storm beach that began forming when area was raised during Mw 8.2 earthquake AD 1855 January. remaining chronology established by radiocarbon dating, in situ 10Be surface‐exposure slip‐predictable uplift estimation. Prior to 1855, uplifts occurred...
The Mw 7.1 Darfield (Canterbury) earthquake of 4 September 2010 (NZST) was the first in New Zealand to produce ground-surface fault rupture since 1987 Edgecumbe earthquake. Surface previously unrecognised Greendale Fault during extends for at least 29.5 km and comprises an en echelon series east-west striking, left-stepping traces. Displacement is predominantly dextral strike-slip, averaging ~2.5 m, with maxima ~5 m along central part rupture. Maximum vertical displacement ~1.5 but generally...
Earthquakes with surface‐wave magnitudes of 7.3–7.9 are estimated to be associated the rupture Wellington Fault at relatively regular intervals 500–770 years. The last such earthquake probably happened between AD 1510 and 1660. Along its southern segment, passes through Wellington, New Zealand's capital, densely populated Hutt Valley. It is considered a highly hazardous structure. To map shallow geometry Fault, we have collected 3‐D ground‐penetrating radar (georadar) data two sites along...
Abstract The Hellenic subduction margin in the Eastern Mediterranean has generated devastating historical earthquakes and tsunamis with poorly known recurrence intervals. Here stranded paleoshorelines indicate strong uplift transients (0–7 mm/yr) along island of Crete during last ~50 kyr due to earthquake clustering. We identify highest rates western since demise Minoan civilization entire between ~10 20 B.P., absence uplifted Late Holocene east being seismic quiescence. Numerical models...
The Kaikōura Earthquake uplifted Peninsula by ≤∼1 m. Uplift in 2016 mainly resulted from slip on an offshore thrust fault (OSTF), modelled to splay the plate-interface, and was further influenced two newly identified faults (Armers Beach Fault, ABF; Te Taumanu TTF) mapped onshore differential lidar (D-lidar). Forward dislocation modelling indicates that peninsula uplift can be reproduced mean of ∼2.3 m OSTF 0.25–0.5 ABF TTF. variable co-seismic recorded during earthquake differs near-uniform...
Abstract The 30 km long Paeroa Fault is one of the largest and fastest slipping (c. 1.5 mm/yr vertical displacement rate) normal faults currently active Taupo Rift North Island, New Zealand. Along its northern section, seven trenches excavated across 5 11 subparallel fault strands show that successive ruptures individual probably occurred at same time, but were individually collectively highly variable in size recurrence, most have ruptured three or four times past 16 kyr. In c....
Abstract This paper provides a photographic tour of the ground-surface rupture features Greendale Fault, formed during 4 September 2010 Darfield earthquake. The fault, previously unknown, produced at least 29.5 km strike-slip surface deformation right-lateral (dextral) sense. Deformation, spread over zone between 30 and 300 m wide, consisted mostly horizontal flexure with subsidiary discrete shears, latter only prominent where overall displacement across exceeded about 1.5 m. A remarkable...
Abstract Rupture of the Greendale Fault during 4 September 2010, M W7.1 Darfield (Canterbury) earthquake produced a zone ground-surface rupture that severely damaged several houses, buildings and lifelines. Immediately after earthquake, surface features were mapped in field from digital terrain models developed airborne Light Detection Ranging (lidar) data. To enable rebuild decisions to be made for future land use planning, fault avoidance was defined following Ministry Environment...
Tens of thousands landslides were generated over 10,000 km2 North Canterbury and Marlborough as a consequence the 14 November 2016, Mw7.8 Kaikōura Earthquake. The most intense landslide damage was concentrated in 3500 around areas fault rupture. Given sparsely populated area affected by landslides, only few homes impacted there no recorded deaths due to landslides. Landslides caused major disruption with all road rail links being severed. affecting State Highway 1 (the main link South Island...
Abstract Active normal faults on the Mediterranean island of Crete form prominent limestone scarps together with basin and range topography. These mainly strike E‐ESE N‐NNE in southern northern Crete, respectively, fault sets commonly intersecting northerly trending being a factor 3 more abundant. Lengths, displacements, displacement rates have been analyzed for 84 active sampled over 2 ± 0.5 Ma (long‐term) 16.5 ka (short‐term) time‐intervals, half showing no resolvable short‐term activity....
The c. 15 km-long Ngapouri-Rotomahana Fault (NRF) is a major splay of the Paeroa at eastern margin modern Taupō Rift, active tectonic structure embedded within Volcanic Zone North Island, New Zealand. NRF and extend to southern Okataina Centre (OVC) lie southwest Tarawera vent lineation, which source approximately half eruptions OVC in past 25 cal. ka BP. Here, we explore volcano-tectonic relationships between Fault. Collective evidence used our analysis includes: volcanic processes...
Abstract Fifty‐four trilobite taxa from 15 new localities in the Bowers Terrane of Northern Victoria Land, including first fossils Molar Formation, are described. The indicate an age range late Middle Cambrian (Boomerangian or older) to mid Late (late Idamean). At Reilly Ridge, Spurs Formation crops out a number fault‐bounded slices; marked lateral facies contrasts between slices and suggest considerable displacement along bounding faults. Houliston Glacier, trilobites Mindyallan imply that...
The tectonic origin, palaeoearthquake histories and slip rates during the last c. 26 ka have been examined for six normal faults (referred to here as Rahotu, Oaonui, Kina, Ihaia, Kiri Pihama faults) within Taranaki Rift, New Zealand. A minimum of 13 ground-surface rupturing palaeoearthquakes recognised on four using analysis displaced late Quaternary stratigraphy landforms. These data, in combination with 21 new radiocarbon dates, constrain timing, magnitude each earthquake. low throw (c....
Research Article| September 01, 1998 Paleoseismology of an active reverse fault in a forearc setting: The Poukawa zone, Hikurangi forearc, New Zealand Harvey M. Kelsey; Kelsey 1Department Geology, Humboldt State University, Arcata, California 95521 Search for other works by this author on: GSW Google Scholar Alan G. Hull; Hull 2Institute Geological and Nuclear Sciences, P.O. Box 30368, Lower Hutt, Susan Cashman; Cashman Kelvin R. Berryman; Berryman Patricia H. 3Department Mackay School...
Abstract. The extent to which climate, eustasy and tectonics interact shape the late Quaternary landscape is poorly known. Alluvial fans often provide useful indexes that allow decoding of information recorded on complex coastal landscapes, such as those eastern Mediterranean. In this paper we analyse date (using infrared stimulated luminescence (IRSL) dating) a double alluvial fan system southwest Crete, an island straddling forearc Hellenic subduction margin, in order constrain timing...
This paper presents preliminary results for three GPR profiles acquired across the Wellington active strike-slip fault within urban area. In this sector, it is suggested that subsurface geometry (8–10 m) of comprises two main deforming strands bound narrow transpressive and transtensive sections. The location planes interpreted from radargrams closely corresponds with inferred at ground surface. Despite noise due to settings, proved be a technique capable locating strands, thus potentially...
Abstract The bivalve, Etalia johnstoni n. gen. et sp., is described from strata of the Etalian Stage (Anisian) Nelson and Southland Murihiku Supergroup sequences, New Zealand. It regarded as an early member Monotoidea. Hinges hinge mechanisms 15 other pteriomorphs are discussed: Pseudomonotis (Pseudomonotidae), Oxytoma, Meleagrinella, Maccoyella, Arctotis (Oxytomidae), Monotis, Otapiria (Monotidae), Buchia, Praebuchia, Malayomaorica, Hokonuia, ?Sichuania marwicki (Buchiidae), Asoella,...