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![Location of study areas at Mahia Peninsula, North Island, New Zealand. A, B) Western Mahia Peninsula cliff exposures of upper Miocene slope deposits seen from the water (Part A) and the air with an unmanned aerial vehicle (Part B). C, D) Eastern Mahia Peninsula wave-cut platform exposure of middle Miocene thin-bedded turbidites photographed from the ground (Part C) and from the air (Part D).]()
![Figure 2. Geologic map of Mahia Peninsula, Lachlan Ridge, and Lachlan Basin, showing simplified structure. Seafloor geology was mapped via correlation of unconformities and seismic reflectors, which were tied to onshore outcrops, Hawke Bay–1 well (Fig. 3B), and dated seafloor samples (Figs. 4B, 4C,5A, and 5B). New Zealand time-scale stage abbreviations (e.g., Wn-Wc) are listed in Figures 4B and 5A. Unconformities 1, 6, 9, and 12–14 are illustrated in Figures 4D and 5C.]()
![Figure 7. Structural map of Mahia Peninsula, Lachlan Ridge, Lachlan Basin, and adjacent areas. Bathymetry contours are in meters. The distribution of uplifted marine terraces on Mahia Peninsula is from Berryman (1993a, 1993b). Onshore structure is from Francis (1993a, 1993b) and Mazengarb and Speden (2000). Large, bold roman numerals are structural segments of the Lachlan fault.]()
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![Figure 1. Location of Ocean Drilling Program Sites 1123 and 1124, their positions at 10 Ma and 2 Ma (after King, 2000), Mahia Peninsula (MP), extinct Coromandel volcanic zone (CVZ), Northland volcanic arc (NVA), and Colville Ridge (CR), and active Taupo volcanic zone (TVZ) and Kermadec Ridge (KR)]()
![Figure 13. Interpreted six-fold (24-channel) migrated high-resolution seismic reflection profile HBT-22 located 5 km north of Mahia Peninsula. See location in Figures 2 and 7. Reflection labels are explained in Figures 4 and 5. Bold arrows above profile designate seismic profile tie lines.]()
![Figure 3. Geologic cross sections of northern (a–a′) and southern (b–b′) Mahia Peninsula, the Lachlan fault, and associated structures. Section locations are shown in Figures 2 and 7. Depth conversion for 60-fold migrated seismic profile H90–11 used average P-wave velocities derived from a vertical seismic profile check-shot survey at Hawke Bay–1 well (Fig. 1C). These velocities included (1) seabed to reflector 6, 2.0 km/s; (2) reflectors 6–14, 2.7 km/s; and (3) below reflector 14, 3.5 km/s. For seismic profiles HBT-18 (Fig. 12) and HBT-20, the following velocities were used for depth conversion: (1) seabed to reflector 11, 1.8 km/s; reflectors 11 to FB, 2.4 km/s; below reflector FB, 3.0 km/s. Reflector labels and ages, rock dredge (X742 and X743) ages, and New Zealand time-scale stage abbreviations (e.g., Sl-Sw) are explained in Figures 4 and 5. Lithostratigraphic abbreviations for Mahia Peninsula (from Francis, 1993a) include Tmz—Te Muka Siltstone; Tgs—Turanganui Sandstone, Kkl—Kinikini Limestone, Otn—Otunua Formation, Aur—Auroa Formation, Tgw—Tangawa Formation, Web—Weber Formation. Solid bars onshore are structural dips from outcrop data. MSL—mean sea level.]()
![A, C) Digital terrain models (DTMs) of the two southernmost cliff exposures along western Mahia Peninsula, each generated with 1200 photographs acquired by a flying unmanned aerial vehicle 15 m away from the exposure. B) Rollover anticline reflecting headwall extension. D) Syndepositional deformation recorded in slope failure deposits, higher in stratigraphy. E) Drag folding related to syndepositional toe thrust faulting.]()
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![Figure 4. Compilation and interpretation of stratigraphic data within Lachlan Basin, Lachlan Ridge, and beneath Mahia Peninsula. (A) The stratigraphic column is a 5.5-km-thick composite well section derived from splicing Opoutama-1 data with the upper part of Hawke Bay–1. See well locations in Figures 1C and 3A. (B) New Zealand time-scale stages (with age ranges compiled and integrated by Field et al. (1997) and Naish et al. (1999) and scaled in millions of years on the left) including Wq—Haweran, Wp—Waipipian, Wo—Opoitian, Tk—Kapitean, Tt—Tongaporutuan, Sw—Waiauan, Sl—Lillburnian, Sc—Clifdenian, Pl—Altonian, Po—Otaian, Lw—Waitakian, Ld—Duntroonian, Lwh—Whaingaroan, Ar—Runangan, Ak—Kaitian, Ab—Bortonian, Dp—Porangan, Dh—Heretaungan, Dm—Mangaorapan, Dw—Waipawan, Dt—Teurian, Mh—Haumurian, Mp—Piripauan, Rt—Teratan, Rm—Mangaotanean, Ra—Arowhanan, Cn—Ngaterian. (C) Marine rock-dredge and core samples from the crest and flanks of Lachlan Ridge and from the inner-shelf platform east of Mahia Peninsula. See sample locations in Figure 2. Vertical bars to the left of the sample number indicate the biostratigraphic age ranges derived from analysis of nannoflora, foraminifera, and pollens by Stratigraphic Solutions Ltd. and Institute of Geological and Nuclear Sciences Ltd. Vertical bars to the right of the number indicate the relative stratigraphic positions from which the samples were recovered, shown here against (D) seismic data from the central Lachlan Basin. Sample numbers commencing with D and C are from Strong et al. (1989). Samples F640a and Z391 are from Lewis (1974), and numbers commencing with X are new samples recovered by NIWA in 1998. Bold gray lines left of reflections 11, 12, 13, and 14 are seismic ties to Hawke Bay–1 well (Fig. 3B). Details of the Quaternary section are shown in Figure 5.]()
![Figure 12. Six-fold (24-channel) migrated high-resolution seismic reflection profile HBT-18 across the Lachlan fault and associated structures east of southern Mahia Peninsula. See location in Figures 2 and 7. Top, uninterpreted; bottom, interpreted. Reflection labels are explained in Figures 4 and 5. The bracketed section labeled “3 to 10” in the footwall basin is approximately equivalent to sequences bounded by unconformities 3–10 in the Lachlan Basin. Bold arrows above profile designate seismic profile tie lines. Note that the correlation of reflectors across the fault, between reflectors 1 and ∼11, is uncertain, so the displacement of the reflector assumed to be 63 ka is unknown.]()
![Figure 5. Details of Quaternary stratigraphy beneath Lachlan Basin and Lachlan Ridge. (A) New Zealand time scale and key nannoflora coccolith and foraminifera datums relevant to samples analyzed. Abbreviations include FAD—first appearance datum, LAD—last appearance datum, H.—Helicosphaera, E.—Emiliania, L.—Loxostomum, G.—Gephyrocapsa, P.—Pseudoemiliania, Gl.—Globorotalia, N.—Notorotalia. (B) Marine core samples from Lachlan Ridge (Fig. 2). Vertical bars to the right of the number indicate the relative stratigraphic positions from which the samples were recovered, shown here against (C) seismic data from the central Lachlan Basin (Fig. 2). Vertical bars to the left of the sample number indicate the biostratigraphic age ranges derived from analysis of nannoflora and foraminifera by Stratigraphic Solutions Ltd. and Institute of Geological and Nuclear Sciences Ltd. (C) Single- channel seismic reflection profile illustrating high-resolution details of nine regionally extensive erosional unconformities (1–9) of Quaternary age. The dashed reflector labeled ? may also be an erosional surface. Labels W1 to W4 are erosional surfaces recognized by Lewis (1971, 1973a). (D) Interpreted sequence stratigraphy. Abbreviations include LSWP—lowstand wave planation, HST—highstand systems tract, TST—transgressive systems tract, MR/TS—marine ravinement or transgressive surface. (E) Inferred correlation of erosion surfaces with oxygen isotope stages from a benthic foraminifera record in equatorial Pacific site ODP Site 677 (Shackleton et al., 1990; Tiedemann et al., 1994). (F) Vertical lines indicate the magnitude of corresponding sea-level lowstands relative to present, after calibrations by Pillans et al. (1998) and Rohling et al. (1998). (G) Correlation of marine terraces uplifted on Mahia Peninsula (Berryman, 1993a, 1993b). (H) Map showing locations of sections x–x′ and y–y′. Contours are water depths in meters. (I) Schematic section x–x′ illustrating development of uplifted coastal terraces and offshore sedimentary units and unconformities east of Mahia Peninsula. Abbreviations include LST—lowstand systems tract, LGM—approximate Last Glacial Maximum sea level. (J) Schematic section y–y′ illustrating development of progressively tilted, lowstand, wave-planed erosion surfaces on the flanks of southern Lachlan Ridge.]()
![Figure 16. Analysis of cumulative displacement of the Lachlan fault. (A) Time vs. separation curves illustrating the history of vertical displacement (fault displacement and folding) on the fault. Each curve represents data from a separate seismic profile or cross section, located in Figures 7 and 15. Each data point is the finite cumulative separation observed at present on the labeled horizon; horizontal and vertical bars indicate estimates of uncertainty. Horizon ages are explained in Figures 4 and 5, and vertical-separation estimates are detailed in Figure 14A. Solid squares are data from structural segments I and II combined. Open circles are data from segment III. (B) Enlargement and log-log scale plot of vertical-displacement data for cross section b–b′ (Fig. 3B), segment III, for the past 1 m.y. of deformation. Data included in Table 1. Inset shows five coseismic uplift events recorded from late Holocene onshore platform terraces on the east coast of Mahia Peninsula (Berryman, 1993a).]()
![Central Hikurangi margin setting. (A) Hikurangi subduction margin along east coast of North Island of New Zealand. NI—North Island; SI—South Island. (B) Segmentation of the north, central, and southern margin (Clark et al., 2019), distribution of the interseismically locked zone (red; coupling coefficient >0.5, as in Wallace et al., 2012), and cumulative area of slow-slip events (yellow; 100 mm contour, as in Wallace, 2020). The North Island dextral fault belt (NIDFB) and other upper-plate faults are shown in dark gray (Seebeck et al., 2022). Gray shaded patch represents onshore Hawke Bay region. MP—Mahia Peninsula; CT—Cape Turnagain. (C) Paleoseismic sites in northern and southern Hawke Bay on the central margin (see Fig. 2 for references). Shaded areas represent the approximate distribution of coseismic uplift (green) and subsidence (blue) from the 1931 CE Napier earthquake (Hull, 1990). (D) Extent of pre-1931 sea level at Ahuriri Lagoon and Pakuratahi Valley. (E) Study site of the Pakuratahi Valley, showing the pre-1931 “Tangoio lagoon” (hashed dark blue; Brown, 1926) and modern streams (light blue). Elevation is in meters above mean sea level (m amsl).]()
![Source faults in Hawke Bay on the central Hikurangi margin. (A) Location of source faults (with relevant slip rates, mm/yr; Seebeck et al., 2022), including 1931-style faults and Kairākau-Kidnappers faults. P-R F.—Patoka-Rangiora fault; N-W Ridge—Napier-Wairoa Ridge fault; Kid. Ridge—Kidnappers Ridge fault. Yellow dots mark paleoseismic studies at coastal lagoons: Te Paeroa and Opoho (Cochran et al., 2006), Pakuratahi (Pak.; Clark et al., 2019; this study), and Ahuriri (Ahu.; Hayward et al., 2016). Orange dots mark paleoseismic studies of marine terraces: Māhia Peninsula (Berryman et al., 2018), Cape Kidnappers (Kid.; Hull, 1987), Waimārama (Wai.; Miyauchi et al., 1989), and Aramoana (Ara.; Litchfield et al., 2022). Blue dashed lines represent depth to the subduction interface (Williams et al., 2013). K-K coastline—Kairākau-Kidnappers coastline. (B) Schematic of cross section A–A′ (panel A) showing the four major source faults that could generate coseismic deformation at paleoseismic sites near Napier (Pakuratahi/Ahuriri). UPF—upper-plate fault. (C) Schematic of expected vertical deformation at Pakuratahi/Ahuriri due to rupture of the four source faults in panel B.]()
![Correlation of regional paleoseismology for each paleoearthquake at Pakuratahi Valley and potential causative source faults. For each correlation, the polarity of vertical displacement at each site is shown by the green upward arrow (coseismic uplift) and blue downward arrow (coseismic subsidence). The modeled earthquake ages are shown as probability density functions (PDFs) with the 95% highest probability density function (HPDF) age ranges indicated by the black bars beneath. Gray arrows and PDFs represent weak correlations of note. Pak—Pakuratahi (this study); Ahu—Ahuriri (Hayward et al., 2016); Kid—Cape Kidnappers; Wai—Waimārama; Ara—Aramoana (Litchfield et al., 2022); and Māhia Peninsula (Berryman et al., 2018). Active faults according to Seebeck et al. (2022) are in black (Wai. F—Waimārama fault; Kai F.—Kairākau fault; Kid. Ridge—Kidnappers Ridge fault; N-W Ridge—Napier-Wairoa Ridge). Depth to the subduction interface is shown by the blue dotted lines (Williams et al., 2013). Panel E also shows the approximate areas of coseismic uplift (shaded green) and subsidence (shaded blue) from the 1931 CE Napier earthquake (Hull, 1990), and the location of aftershocks (1–5; McGinty et al., 2001). HB—Hawke Bay. See Figure 2 for other abbreviations.]()
![Digital terrain model (DTM) of wave-cut platform exposures along eastern Mahia Peninsula. A) DTM of continuous strata was generated with 600 photographs acquired by flying an unmanned aerial vehicle (UAV) 60 m above exposure. B) Nested scour surfaces observed from the air. C) High-resolution portions of model (from images acquired 2 m above outcrop exposure) matched to centimeter-scale stratigraphic sections measured in the field. D) DTM of laterally thinning packages was generated with 20 photographs acquired by flying the UAV 30 m above the exposure. E) Close-up of laterally thinning packages of thin-bedded turbidites. F) Two plots testing the accuracy of the method and how well bed thickness data measured with the DTM matches data measured in the field. Beds were measured from the base of sandstone to the top of associated mudstone. Plots show data for 50 beds, of which the bottom nine are shown in Part C. The left plot shows bed thickness measured with the DTM plotted against field measurements, with 1:1 line drawn. Percent error of bed thickness measured with the DTM relative to field measurements is shown in the right plot. The plotted line shows the expected measurement error for a DTM with 1 cm resolution. Most data fall within this expected error. Data that lie outside this error resulted from either an inconsistency in the DTM or an inaccurate measurement in the field.]()
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Location of study areas at Mahia Peninsula, North Island, New Zealand. A ,... Available to Purchase
in Modeling Stratigraphic Architecture Using Small Unmanned Aerial Vehicles and Photogrammetry: Examples From the Miocene East Coast Basin, New Zealand
> Journal of Sedimentary Research
Published: 01 February 2017
Fig. 1.— Location of study areas at Mahia Peninsula, North Island, New Zealand. A , B) Western Mahia Peninsula cliff exposures of upper Miocene slope deposits seen from the water (Part A) and the air with an unmanned aerial vehicle (Part B). C , D) Eastern Mahia Peninsula wave-cut platform
Image
Figure 2. Geologic map of Mahia Peninsula, Lachlan Ridge, and Lachlan Basin... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
Figure 2. Geologic map of Mahia Peninsula, Lachlan Ridge, and Lachlan Basin, showing simplified structure. Seafloor geology was mapped via correlation of unconformities and seismic reflectors, which were tied to onshore outcrops, Hawke Bay–1 well ( Fig. 3B ), and dated seafloor samples ( Figs. 4B
Image
Figure 7. Structural map of Mahia Peninsula, Lachlan Ridge, Lachlan Basin, ... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
Figure 7. Structural map of Mahia Peninsula, Lachlan Ridge, Lachlan Basin, and adjacent areas. Bathymetry contours are in meters. The distribution of uplifted marine terraces on Mahia Peninsula is from Berryman (1993a , 1993b) . Onshore structure is from Francis (1993a , 1993b) and Mazengarb
Journal Article
Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand Available to Purchase
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 November 2002
GSA Bulletin (2002) 114 (11): 1379–1405.
...Figure 2. Geologic map of Mahia Peninsula, Lachlan Ridge, and Lachlan Basin, showing simplified structure. Seafloor geology was mapped via correlation of unconformities and seismic reflectors, which were tied to onshore outcrops, Hawke Bay–1 well ( Fig. 3B ), and dated seafloor samples ( Figs. 4B...
FIGURES
Journal Article
Paleoecological insights into subduction zone earthquake occurrence, eastern North Island, New Zealand Available to Purchase
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 September 2006
GSA Bulletin (2006) 118 (9-10): 1051–1074.
... of tsunami inundation with sudden subsidence. Forward elastic-dislocation models indicate that the observed subsidence could be achieved in ∼M w 7.9 earthquakes on either the subduction interface or the Lachlan Fault, which would involve synchronous uplift of Mahia Peninsula. Combined rupture...
FIGURES
Image
Figure 1. Location of Ocean Drilling Program Sites 1123 and 1124, their pos... Available to Purchase
in Demise of one volcanic zone and birth of another—A 12 m.y. marine record of major rhyolitic eruptions from New Zealand
> Geology
Published: 01 June 2003
Figure 1. Location of Ocean Drilling Program Sites 1123 and 1124, their positions at 10 Ma and 2 Ma (after King, 2000 ), Mahia Peninsula (MP), extinct Coromandel volcanic zone (CVZ), Northland volcanic arc (NVA), and Colville Ridge (CR), and active Taupo volcanic zone (TVZ) and Kermadec Ridge (KR)
Image
Figure 13. Interpreted six-fold (24-channel) migrated high-resolution seism... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
Figure 13. Interpreted six-fold (24-channel) migrated high-resolution seismic reflection profile HBT-22 located 5 km north of Mahia Peninsula. See location in Figures 2 and 7 . Reflection labels are explained in Figures 4 and 5 . Bold arrows above profile designate seismic profile tie lines.
Image
Figure 3. Geologic cross sections of northern (a–a′) and southern (b–b′) Ma... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
Figure 3. Geologic cross sections of northern (a–a′) and southern (b–b′) Mahia Peninsula, the Lachlan fault, and associated structures. Section locations are shown in Figures 2 and 7 . Depth conversion for 60-fold migrated seismic profile H90–11 used average P-wave velocities derived from
Image
A , C) Digital terrain models (DTMs) of the two southernmost cliff exposu... Available to Purchase
in Modeling Stratigraphic Architecture Using Small Unmanned Aerial Vehicles and Photogrammetry: Examples From the Miocene East Coast Basin, New Zealand
> Journal of Sedimentary Research
Published: 01 February 2017
Fig. 3.— A , C) Digital terrain models (DTMs) of the two southernmost cliff exposures along western Mahia Peninsula, each generated with 1200 photographs acquired by a flying unmanned aerial vehicle 15 m away from the exposure. B) Rollover anticline reflecting headwall extension. D
Journal Article
Modeling Stratigraphic Architecture Using Small Unmanned Aerial Vehicles and Photogrammetry: Examples From the Miocene East Coast Basin, New Zealand Available to Purchase
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 01 February 2017
Journal of Sedimentary Research (2017) 87 (2): 126–132.
...Fig. 1.— Location of study areas at Mahia Peninsula, North Island, New Zealand. A , B) Western Mahia Peninsula cliff exposures of upper Miocene slope deposits seen from the water (Part A) and the air with an unmanned aerial vehicle (Part B). C , D) Eastern Mahia Peninsula wave-cut platform...
FIGURES
Image
Figure 4. Compilation and interpretation of stratigraphic data within Lachl... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
Figure 4. Compilation and interpretation of stratigraphic data within Lachlan Basin, Lachlan Ridge, and beneath Mahia Peninsula. (A) The stratigraphic column is a 5.5-km-thick composite well section derived from splicing Opoutama-1 data with the upper part of Hawke Bay–1. See well locations
Image
Figure 12. Six-fold (24-channel) migrated high-resolution seismic reflectio... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
Figure 12. Six-fold (24-channel) migrated high-resolution seismic reflection profile HBT-18 across the Lachlan fault and associated structures east of southern Mahia Peninsula. See location in Figures 2 and 7 . Top, uninterpreted; bottom, interpreted. Reflection labels are explained in Figures
Image
Figure 5. Details of Quaternary stratigraphy beneath Lachlan Basin and Lach... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
uplifted on Mahia Peninsula ( Berryman, 1993a , 1993b ). (H) Map showing locations of sections x–x′ and y–y′. Contours are water depths in meters. (I) Schematic section x–x′ illustrating development of uplifted coastal terraces and offshore sedimentary units and unconformities east of Mahia Peninsula
Image
Figure 16. Analysis of cumulative displacement of the Lachlan fault. (A) Ti... Available to Purchase
in Late Cenozoic evolution and earthquake potential of an active listric thrust complex above the Hikurangi subduction zone, New Zealand
> GSA Bulletin
Published: 01 November 2002
uplift events recorded from late Holocene onshore platform terraces on the east coast of Mahia Peninsula ( Berryman, 1993a ).
Image
Central Hikurangi margin setting. (A) Hikurangi subduction margin along eas... Available to Purchase
in A 5000 yr record of coastal uplift and subsidence reveals multiple source faults for past earthquakes on the central Hikurangi margin, New Zealand
> GSA Bulletin
Published: 15 November 2023
onshore Hawke Bay region. MP—Mahia Peninsula; CT—Cape Turnagain. (C) Paleoseismic sites in northern and southern Hawke Bay on the central margin (see Fig. 2 for references). Shaded areas represent the approximate distribution of coseismic uplift (green) and subsidence (blue) from the 1931 CE Napier
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Source faults in Hawke Bay on the central Hikurangi margin. (A) Location of... Available to Purchase
in A 5000 yr record of coastal uplift and subsidence reveals multiple source faults for past earthquakes on the central Hikurangi margin, New Zealand
> GSA Bulletin
Published: 15 November 2023
—Kidnappers Ridge fault. Yellow dots mark paleoseismic studies at coastal lagoons: Te Paeroa and Opoho ( Cochran et al., 2006 ), Pakuratahi (Pak.; Clark et al., 2019 ; this study), and Ahuriri (Ahu.; Hayward et al., 2016 ). Orange dots mark paleoseismic studies of marine terraces: Māhia Peninsula ( Berryman
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Correlation of regional paleoseismology for each paleoearthquake at Pakurat... Available to Purchase
in A 5000 yr record of coastal uplift and subsidence reveals multiple source faults for past earthquakes on the central Hikurangi margin, New Zealand
> GSA Bulletin
Published: 15 November 2023
al., 2016 ); Kid—Cape Kidnappers; Wai—Waimārama; Ara—Aramoana ( Litchfield et al., 2022 ); and Māhia Peninsula ( Berryman et al., 2018 ). Active faults according to Seebeck et al. (2022) are in black (Wai. F—Waimārama fault; Kai F.—Kairākau fault; Kid. Ridge—Kidnappers Ridge fault; N-W Ridge—Napier
Image
Digital terrain model (DTM) of wave-cut platform exposures along eastern Ma... Available to Purchase
in Modeling Stratigraphic Architecture Using Small Unmanned Aerial Vehicles and Photogrammetry: Examples From the Miocene East Coast Basin, New Zealand
> Journal of Sedimentary Research
Published: 01 February 2017
Fig. 4.— Digital terrain model (DTM) of wave-cut platform exposures along eastern Mahia Peninsula. A) DTM of continuous strata was generated with 600 photographs acquired by flying an unmanned aerial vehicle (UAV) 60 m above exposure. B) Nested scour surfaces observed from the air. C) High
Journal Article
Demise of one volcanic zone and birth of another—A 12 m.y. marine record of major rhyolitic eruptions from New Zealand Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 June 2003
Geology (2003) 31 (6): 493–496.
...Figure 1. Location of Ocean Drilling Program Sites 1123 and 1124, their positions at 10 Ma and 2 Ma (after King, 2000 ), Mahia Peninsula (MP), extinct Coromandel volcanic zone (CVZ), Northland volcanic arc (NVA), and Colville Ridge (CR), and active Taupo volcanic zone (TVZ) and Kermadec Ridge (KR) ...
FIGURES
Journal Article
A 5000 yr record of coastal uplift and subsidence reveals multiple source faults for past earthquakes on the central Hikurangi margin, New Zealand Available to Purchase
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 15 November 2023
GSA Bulletin (2024) 136 (7-8): 2702–2722.
... onshore Hawke Bay region. MP—Mahia Peninsula; CT—Cape Turnagain. (C) Paleoseismic sites in northern and southern Hawke Bay on the central margin (see Fig. 2 for references). Shaded areas represent the approximate distribution of coseismic uplift (green) and subsidence (blue) from the 1931 CE Napier...
FIGURES
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