Abstract
The Mt Wilberg rock avalanche in Westland, New Zealand occurred before 1300 AD and may have occurred as a consequence of an Alpine fault earthquake in ca. 1220 AD or earlier. Its ∼40 × 106 m3 deposit may have briefly obstructed the Wanganui River, but only about 25% of its surface morphology still survives, on terraces isolated from river erosion. The landslide appears to have moved initially as a block, in a direction controlled by a strong rock mass at the base of the source area, before disintegrating and spreading across terraces, fans, and floodplains. Rock avalanche deposits in Westland have relatively short expected lifetimes in the rugged terrain and high rainfall of the area; hence, the hazard from such events is under-represented by their current remnants.












Similar content being viewed by others
References
Ashford SA, Sitar N, Lysmer J, Deng N (1997) Topographic effects on the seismic response of steep slopes. Bull Seismol Soc Am 87:701–709
Berryman K, Alloway B, Almond P, Barrell D, Duncan R, McSaveney M, Read S, Tonkin P (2001) Alpine fault rupture and landscape evolution in Westland, New Zealand. In Proc 5th Int Conf Geomorph Tokyo
Buech F (2008) Seismic response of little red hill—towards an understanding of topographic effects on ground motion and rock slope failure. Ph.D. thesis, University of Canterbury, New Zealand, p. 148
Calvetti F, Crosta GB, Tatarella M (2000) Numerical prediction of dry granular flows: from the reproduction of small-scale experiments to the prediction of rock avalanches. Riv Ital Geotec 2:21–38
Campbell CS (1989) Self-lubrication for long-runout landslides. J Geol 97:653–665
Campbell CS, Cleary P, Hopkins MA (1995) Large landslide simulations: global deformation, velocities and basal friction. J Geophys Res 100:8267–8283. doi:10.1029/94JB00937
Cox SC, Barrell DJA (compilers) (2007) Geology of the Aoraki Area. Institute of Geological and Nuclear Sciences 1:250,000 geological map 15. 1 sheet +71 p Lower Hutt, New Zealand.
Cox SC, Allen SK, Ferris BG (2008) Vampire rock avalanches, Aoraki/Mount Cook National Park, New Zealand. Science Report 2008/10, GNS Science, Lower Hutt, New Zealand, p. 34
Davies TRH (1982) Spreading of rock avalanche debris by mechanical fluidisation. Rock Mech 15:9–24. doi:10.1007/BF01239474
Davies TRH, McSaveney MJ (2002) Dynamic simulation of the motion of fragmenting rock avalanches. Can Geotech J 39:789–798. doi:10.1139/t02-035
Davies TRH, Korup O (2007) Persistent alluvial fanhead trenching resulting from large, infrequent sediment inputs. Earth Surf Processes Landf 32:725–742. doi:10.1002/esp.1410
Davies TRH, McSaveney MJ, Beetham RD (2006) Rapid block glides—slide-surface fragmentation in New Zealand’s Waikaremoana landslide. Q J Eng Geol Hydrogeol 39:115–129. doi:10.1144/1470-9236/05-041
Delvaux D, Abdrakhmatov KE, Lemzin I, Strom AL (2001) Landslides and surface breaks of the 1911, Ms 8.2 Kemin earthquake, Kyrgystan. Russ Geol Geophys 42:1167–1177
De Mets C, Gordon RG, Argus D, Stein S (1994) Effect of recent revisions to the geomagnetic time scale on estimates of current plate motions. Geophys Res Lett 21:2191–2194. doi:10.1029/94GL02118
Dunning SA (2004) Rock avalanches in high mountains. Ph.D. thesis, Luton University, UK.
Dunning SA, Rosser NJ, Petley DN, Massey CI (2006) The formation and failure of the Tsatichhu landslide dam, Bhutan Himalaya. Landslides 3:107–113. doi:10.1007/s10346-005-0032-x
Dunning SA, Mitchell WA, Rosser NJ, Petley DN (2007) The Hattian Bala rock avalanche and associated landslides triggered by the Kashmir Earthquake of 8 October 2005. Eng Geol 93:130–144. doi:10.1016/j.enggeo.2007.07.003
Geli L, Bard P-Y, Julien B (1988) The effect of topography on earthquake ground motion: a review and new results. Bull Seismol Soc Am 78:42–63
Hancox GT, McSaveney MJ, Manville VR, Davies TRH (2005) The October 1999 Mt Adams rock avalanche and subsequent landslide dam-break flood and effects in Poerua River, Westland, New Zealand. NZ J Geol Geophys 48:683–705
Havenith H-B, Strom A, Jongmans D, Abdrachmatov K, Delvaux D, Trefois P (2003) Seismic triggering of earthquakes, part A: field evidence from the northern Tien Shan. Nat Hazards Earth Syst Sci 3:135–149
Henderson RD, Thompson SM (1999) Extreme rainfalls in the Southern Alps of New Zealand. J Hydrol NZ 38:309–330
Hovius N, Stark CP, Allen PA (1997) Sediment flux from a mountain belt derived by landslide mapping. Geol 25:231–234. doi:10.1130/0091-7613(1997)025<0231:SFFAMB>2.3.CO;2
Iverson RM, Denlinger RP (2001) Flow of variably fluidised granular masses across 3-D terrain: 1. Coulomb mixture theory. J Geophys Res 106:537–552. doi:10.1029/2000JB900329
Jibson RW, Harp EL, Schulz W, Keefer DK (2006) Large rock avalanches triggered by the M 7.9 Denali Fault, Alaska, earthquake of 3 November 2002. Eng Geol 83:144–160. doi:10.1016/j.enggeo.2005.06.029
Keefer DK (1984) Landslides caused by earthquakes. GSA Bull 95:406–421. doi:10.1130/0016-7606(1984)95<406:LCBE>2.0.CO;2
Keefer DK (1994) The importance of earthquake-induced landslides to long-term slope erosion and slope-failure hazards in seismically active regions. Geomorphology 10:265–284. doi:10.1016/0169-555X(94)90021-3
Korup O (2004) Geomorphic implications of fault zone weakening: slope instability along the Alpine fault, South Westland to Fiordland. NZ J Geol Geophys 47:257–267
Korup O (2005) Geomorphic imprint of landslides on alpine river systems, southwest New Zealand. Earth Surf Process Landf 30:783–300. doi:10.1002/esp.1171
Larsen SH, Davies TRH, McSaveney MJ (2005) A possible coseismic landslide origin of late Holocene moraines of the Southern Alps, New Zealand. NZ J Geol Geophys 48:311–314
McDougall S, Hungr O (2004) A model for the analysis of rapid landslide motion across three-dimensional terrain. Can Geotech J 41:1084–1097. doi:10.1139/t04-052
McSaveney MJ (1978) Sherman Glacier rock avalanche, Alaska, U.S.A. In: Rockslides and Avalanches, 1. Voight B (ed) Developments in geotechnical engineering, 14A: 197–258
McSaveney MJ (2002) Recent rockfalls and rock avalanches in Mount Cook National Park, New Zealand. Ch 2 in Evans SG, DeGraff JV (eds). Catastrophic landslides: occurrence, mechanisms and mobility. GSA Rev Eng Geol 15:35–70.
Mitchell WA, McSaveney MJ, Zondervan A, Kim K, Dunning SA, Taylor PJ (2007) The Keylong Serai rock avalanche, NW Indian Himalaya: geomorphology and paleoseismic implications. Landslides 4:245–254. doi:10.1007/s10346-007-0085-0
Norris RJ, Cooper AF (2001) Late Quaternary slip rates and slip partitioning on the Alpine Fault, New Zealand. J Struct Geol 23:507–520. doi:10.1016/S0191-8141(00)00122-X
Rhoades DA, Van Dissen RJ (2003) Estimates of the time-varying hazard of rupture of the Alpine Fault, New Zealand, allowing for uncertainties. NZ J Geol Geophys 46:479–488
Smith GM, Davies TRH, McSaveney MJ, Bell DH (2006) The Acheron rock avalanche, Canterbury, New Zealand—morphology and dynamics. Landslides 3:62–72. doi:10.1007/s10346-005-0012-1
Sosio R, Crosta GB, Hungr O (2008) Complete dynamic modelling calibration for the Thurwieser rock avalanche (Italian Central Alps). Eng Geol 100:11–26. doi:10.1016/j.enggeo.2008.02.012
Staron L (2008) Mobility of long-runout rock flows: a discrete numerical investigation. Geophys J Int 172:455–463. doi:10.1111/j.1365-246X.2007.03631.x
Straub S (1997) Predictability of long runout landslide motion: implications from granular flow mechanics. Geol Rundsch 86:415–425. doi:10.1007/s005310050150
Sutherland R, Berryman K, Norris R (2006) Quaternary slip rate and geomorphology of the Alpine fault: Implications for kinematics and seismic hazard in southwest New Zealand. Bull Geol Soc Am 118:464–474. doi:10.1130/B25627.1
Tovar DS, Shulmeister J, Davies TR (2009) A landslide origin of the New Zealand’s Waiho Loop Moraine. Nature Geosci. doi:10.1038/ngeo249
Wardle P (1980) Primary succession in Westland National Park and its vicinity, New Zealand. N Z J Bot 18:221–232
Wells A, Yetton MD, Duncan RP, Stewart GH (1999) Prehistoric dates of the most recent Alpine Fault earthquakes, New Zealand. Geology 27:995–998. doi:10.1130/0091-7613(1999)027<0995:PDOTMR>2.3.CO;2
Whitehouse I, Griffiths GA (1983) Frequency and hazard of large rock avalanches in the central Southern Alps, New Zealand. Geology 11:331–334. doi:10.1130/0091-7613(1983)11<331:FAHOLR>2.0.CO;2
Wright CA (1998) The AD 930 long-runout round top debris avalanche, Westland, New Zealand. NZ J Geol Geophys 41:493–497
Yetton MD (1998) The probability and consequences of the next Alpine Fault earthquake, South Island, New Zealand. Ph.D. thesis, University of Canterbury, New Zealand.
Acknowledgments
We thank John Sullivan, landowner, for the access and advice and for the Matai sample and digger; Mason Trust, University of Canterbury for funding for GGC; Andrew Wells of Hawea for dendrochronological expertise and assistance; and Sandy Hammond of Lincoln University for laboratory facilities and assistance. This research was supported by the New Zealand Foundation for Research, Science and Technology, through the Public Good Science Fund.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Chevalier, G., Davies, T. & McSaveney, M. The prehistoric Mt Wilberg rock avalanche, Westland, New Zealand. Landslides 6, 253–262 (2009). https://doi.org/10.1007/s10346-009-0156-5
Received:
Accepted:
Published:
Issue date:
DOI: https://doi.org/10.1007/s10346-009-0156-5
