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![Mean basement strike measurements extracted from the QMAP GIS (Rattenbury and Isaac, 2012). Left: New Zealand-wide basement strike orientation data compiled from 50 km gridded analysis by H. Seebeck (2018, personal commun.). Right: North Island East Coast basement strike orientation data derived herein from 20 km grids from QMAP sheets, with all measurements shown as lower-hemisphere, equal-area projections. Points plotted on stereonets are colored by basement units. Inset: Poles to bedding and mean bedding planes for all strike and dip data by region. (A) Wairarapa, (B) Hawke’s Bay, (C) Raukumara basement (autochthon), (D) Raukumara basal cover (autochthon), (E) East Coast Allochthon basal cover. S—mean strike; n—number of observations; E.—Early.]()
![Geological map of the Hundalee fault area. Derived from the QMAP 1:250,000‐scale geological map database (Rattenbury et al., 2006; Heron, 2014) and underlain by a digital elevation model (DEM). A revised position for part of the Hundalee fault (dashed black line) and additional fold axes are also shown.The color version of this figure is available only in the electronic edition.]()
![Calculation scheme of qmap. Each time window, dt, is subdivided into bins or slots to sort all events within a box dx2. Seismic activity is described by the number of filled bins nslot. The average state is obtained by reordering nslot of all time windows dt at fixed site; periods where seismicity is high (after-shock series, swarms) or low (quiescence) are excluded in calculating the mean av.]()
![Calculation of qmap functionals at Parkfield (35.92 Lat, – 120.47 Lon). Parameters are dx = 30 km, dt = 250d, Mthres = 2.0; time increment is four months. The first window displays large earthquakes by time and distance; only events below the qmap line are considered in the algorithm. This initial information is given as upper curve in both lower windows. Normal seismicity gets xlight or yellow patches; quiescence below the thresholds is coded to gray or red scale patches.]()
![(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.]()
![(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.]()
![(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.]()
![(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.]()
![(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.]()
![Filter operators for qmaprelative scaling. The maps are enhanced by two morphological operations of image processing. The purpose of these erosions is to suppress isolated anomaly spots in time and space. Any pixel is kept if it conforms to the bounding condition, else it is set to background (yellow). In the left case, an hour-glass operator tests on continuation in time: at least one pixel in map t – 1 or t + 1 must be above threshold of equation (3). The right test removes pixels that do not have two spatial neighbors above threshold in any of the four quadrants. In the example, the center pixel remains because of the NE quadrant.]()
![(a) Maps of null hypothesis 1989 by qmap with absolute scaling. The null hypothesis describes how much quiescence spots would precede a real event even if the earthquake distribution is completely random. This randomness is derived from the given catalog by arbitrarily exchanging the times of nslot(x,y,t), but keeping the locations, which preserves the characteristics of clustering, and gives same numbers of gray scale pixels as in Figure 6b. (b) Maps of null hypothesis by qmap with relative scaling. The spatio-temporal continuity tests of Figure 3 yield the clean maps where only occasionally some spots remain.]()
![(a) Maps of epicenters 1989. The cnss catalog is broken down into four-month windows, each starting at the noted time. All events with minimum magnitude 2.0 are considered. (b) Maps of quiescence by qmap with absolute scaling. The calculations of equations (1)–(4) are performed every 15 km (length per patch) and every four months (time increment per map). However, each patch represents the information of 30 × 30 km2 and 250 days, that is, the map is twice oversampled. (c) Maps of quiescence by qmap with relative scaling. Compared to (b), these maps preserve the main anomalies but erase small spots.]()
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![Palinspastic maps for selected time-planes with geology superimposed, displaying the progressive reconstruction of Neogene deformation across Zealandia. Maps produced by GPlates software (see text). ECA—East Coast Allochthon; MFS—Marlborough Fault System; JMA-DMMT—Junction Magnetic Anomaly–Dun Mountain-Maitai Terrane; TVZ—Taupō Volcanic Zone. QMAP geological data from Heron (2018).]()
![Maps of average seismicity. Statistical properties of the seismic catalog given by (left σ right, top σ down) average seismicity, av, by equation (1), completeness magnitude Mc, ratio of daylight to nighttime seismicity, clustering of minima in time by equation (6), amplitude normalization by equation (7), and analysis area of qmap after application of all muting criteria.]()
![(A) Map of the Mataketake Range with sample locations from this study and previous studies indicated. Metamorphic isograds are based on the QMAP Geological Map of New Zealand (Rattenbury and Isaac, 2012). Inset shows the location of the study area within the South Island of New Zealand and existing Alpine Schist geochronology. Grt—garnet, Mnz—monazite, Zrn—zircon, Kspar—K-feldspar. (B) Schematic cross section across the South Island (transect shown in inset in A).]()
![Map showing distribution of the Haast Schist in the South Island, New Zealand, and its regional subdivision into the Otago, Alpine, and Marlborough Schist components. The constituent tectonostratigraphic terranes are based on the latest quarter-million-scale mapping program by GNS Science (QMAP, scale 1:250,000) sheets compiled by Turnbull (2000), Begg and Johnston (2000), Nathan et al. (2002), Rattenbury et al. (2006, 2010), and Cox and Barrell (2007). A.L.A.—Aspiring lithologic association. Schist sample localities for which detrital zircon ages are presented, or referred to, are indicated with filled circles.]()
![Minimum age populations of detrital zircons from quartzofeldspathic schist of the Haast River traverse perpendicular to the structural grain of the Alpine Schist. Detrital zircon ages are superimposed on a geology base map taken from the Haast quarter-million-scale mapping program by GNS Science (QMAP) sheet (Rattenbury et al., 2010). A—Aspiring lithologic association, W—Wanaka lithologic association, T—undifferentiated Torlesse composite terrane. Line of cross section used in Figure 12 is indicated. Coordinate system: New Zealand Transverse Mercator (NSTM)2000.]()
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1
Journal Article
Mapping Seismic Quiescence in California Available to Purchase
Publisher: Seismological Society of America
Published: 01 February 2001
Bulletin of the Seismological Society of America (2001) 91 (1): 64–81.
... be an exhaustive search over all parameters, over an area significantly larger than just the epicenter region, and against a test of the null hypothesis. QMAP is a new mapping approach to process full catalogs, that is, some twenty years of data for areas of one million km 2 , with one fixed set of parameters...
FIGURES
Image
Mean basement strike measurements extracted from the QMAP GIS ( Rattenbury ... Available to Purchase
in Reconstructing a dismembered Neogene basin along the active Hikurangi subduction margin, New Zealand
> GSA Bulletin
Published: 17 August 2022
Figure 3. Mean basement strike measurements extracted from the QMAP GIS ( Rattenbury and Isaac, 2012 ). Left: New Zealand-wide basement strike orientation data compiled from 50 km gridded analysis by H. Seebeck (2018 , personal commun.). Right: North Island East Coast basement strike orientation
Image
Geological map of the Hundalee fault area. Derived from the QMAP 1:250,000‐... Available to Purchase
in Surface Rupture of the Hundalee Fault during the 2016 M w 7.8 Kaikōura Earthquake
> Bulletin of the Seismological Society of America
Published: 05 June 2018
Figure 2. Geological map of the Hundalee fault area. Derived from the QMAP 1:250,000‐scale geological map database ( Rattenbury et al. , 2006 ; Heron, 2014 ) and underlain by a digital elevation model (DEM). A revised position for part of the Hundalee fault (dashed black line) and additional
Image
Calculation scheme of qmap . Each time window, dt, is subdivided into bi... Available to Purchase
Published: 01 February 2001
Figure 1. Calculation scheme of qmap . Each time window, dt, is subdivided into bins or slots to sort all events within a box dx 2 . Seismic activity is described by the number of filled bins n slot . The average state is obtained by reordering n slot of all time windows dt at fixed
Image
Calculation of qmap functionals at Parkfield (35.92 Lat, – 120.47 Lon). P... Available to Purchase
Published: 01 February 2001
Figure 2. Calculation of qmap functionals at Parkfield (35.92 Lat, – 120.47 Lon). Parameters are dx = 30 km, dt = 250d, M thres = 2.0; time increment is four months. The first window displays large earthquakes by time and distance; only events below the qmap line are considered
Image
(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For dis... Available to Purchase
Published: 01 February 2001
Figure 8. (a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.
Image
(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For dis... Available to Purchase
Published: 01 February 2001
Figure 8. (a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.
Image
(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For dis... Available to Purchase
Published: 01 February 2001
Figure 8. (a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.
Image
(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For dis... Available to Purchase
Published: 01 February 2001
Figure 8. (a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.
Image
(a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For dis... Available to Purchase
Published: 01 February 2001
Figure 8. (a–e) Maps of quiescence 1980–1999 by qmap with relative scaling. For discussion of individual anomalies, see the text.
Image
Filter operators for qmap relative scaling. The maps are enhanced by two... Available to Purchase
Published: 01 February 2001
Figure 3. Filter operators for qmap relative scaling. The maps are enhanced by two morphological operations of image processing. The purpose of these erosions is to suppress isolated anomaly spots in time and space. Any pixel is kept if it conforms to the bounding condition, else it is set
Image
(a) Maps of null hypothesis 1989 by qmap with absolute scaling. The null ... Available to Purchase
Published: 01 February 2001
Figure 7. (a) Maps of null hypothesis 1989 by qmap with absolute scaling. The null hypothesis describes how much quiescence spots would precede a real event even if the earthquake distribution is completely random. This randomness is derived from the given catalog by arbitrarily exchanging
Image
(a) Maps of epicenters 1989. The cnss catalog is broken down into four-mo... Available to Purchase
Published: 01 February 2001
Figure 6. (a) Maps of epicenters 1989. The cnss catalog is broken down into four-month windows, each starting at the noted time. All events with minimum magnitude 2.0 are considered. (b) Maps of quiescence by qmap with absolute scaling. The calculations of equations (1)–(4) are performed
Journal Article
Geochemistry in prospectivity modelling: investigating gold mineralization in the Taupo Volcanic Zone, New Zealand Available to Purchase
Publisher: Geological Society of London
Published: 27 February 2015
Geochemistry: Exploration, Environment, Analysis (2015) 15 (2-3): 193–204.
... programmes in the region. NZP&M reports have been the main source of historical exploration results and these have been compiled into a digital database that includes rock chip and stream sediment geochemistry. GNS Sciences QMAP geological mapping over Rotorua, Hawkes Bay and Taranaki ( Townsend et al...
FIGURES
Image
Palinspastic maps for selected time-planes with geology superimposed, displ... Available to Purchase
in Reconstructing a dismembered Neogene basin along the active Hikurangi subduction margin, New Zealand
> GSA Bulletin
Published: 17 August 2022
Anomaly–Dun Mountain-Maitai Terrane; TVZ—Taupō Volcanic Zone. QMAP geological data from Heron (2018) .
Image
Maps of average seismicity. Statistical properties of the seismic catalog g... Available to Purchase
Published: 01 February 2001
normalization by equation (7), and analysis area of qmap after application of all muting criteria.
Image
(A) Map of the Mataketake Range with sample locations from this study and p... Open Access
in Accessory mineral petrochronology reveals 30 m.y. of partial melting during the separation of Zealandia from eastern Gondwana
> Lithosphere
Published: 20 December 2018
Figure 1. (A) Map of the Mataketake Range with sample locations from this study and previous studies indicated. Metamorphic isograds are based on the QMAP Geological Map of New Zealand ( Rattenbury and Isaac, 2012 ). Inset shows the location of the study area within the South Island of New
Image
Map showing distribution of the Haast Schist in the South Island, New Zeala... Available to Purchase
in Two-sided accretion and polyphase metamorphism in the Haast Schist belt, New Zealand: Constraints from detrital zircon geochronology
> GSA Bulletin
Published: 28 March 2018
Science (QMAP, scale 1:250,000) sheets compiled by Turnbull (2000) , Begg and Johnston (2000) , Nathan et al. (2002) , Rattenbury et al. (2006 , 2010) , and Cox and Barrell (2007) . A.L.A.—Aspiring lithologic association. Schist sample localities for which detrital zircon ages are presented
Image
Minimum age populations of detrital zircons from quartzofeldspathic schist ... Available to Purchase
in Two-sided accretion and polyphase metamorphism in the Haast Schist belt, New Zealand: Constraints from detrital zircon geochronology
> GSA Bulletin
Published: 28 March 2018
by GNS Science (QMAP) sheet ( Rattenbury et al., 2010 ). A—Aspiring lithologic association, W—Wanaka lithologic association, T—undifferentiated Torlesse composite terrane. Line of cross section used in Figure 12 is indicated. Coordinate system: New Zealand Transverse Mercator (NSTM)2000.
Journal Article
Correlations between BQ and Q Rock Mass Classification Systems and Design Impact on a Tunnel Project in Malaysia Available to Purchase
Publisher: Geological Society of London
Published: 08 July 2025
Quarterly Journal of Engineering Geology and Hydrogeology (2025) qjegh2024-114.
.... QWall = Q value on chart used to determine support for tunnel wall. QMapped = Q value boundary between support classes in the support tables. The dowel spacing and shotcrete thickness are estimated from the support charts using the values of QRoof and QWall range for each support class...
Early Publication
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