Slip Rate on the Wellington Fault, New Zealand, during the Late Quaternary: Evidence for Variable Slip during the Holocene

Abstract The late Quaternary in North America was marked by highly variable climate and considerable biodiversity loss including a megafaunal extinction event at the terminal Pleistocene. Here, we focus on changes in body size and diet in Neotoma (woodrats) in response to these ecological perturbations using the fossil record from the Edwards Plateau (Texas) across the past 20,000 years. Body mass was estimated using measurements of fossil teeth and diet was quantified using stable isotope analysis of carbon and nitrogen from fossil bone collagen. Prior to ca. 7000 cal yr BP, maximum mass was positively correlated to precipitation and negatively correlated to temperature. Independently, mass was negatively correlated to community composition, becoming more similar to modern over time. Neotoma diet in the Pleistocene was primarily sourced from C3 plants, but became progressively more reliant on C4 (and potentially CAM) plants through the Holocene. Decreasing population mass and higher C4/CAM consumption was associated with a transition from a mesic to xeric landscape. Our results suggest that Neotoma responded to climatic variability during the terminal Pleistocene through changes in body size, while changes in resource availability during the Holocene likely led to shifts in the relative abundance of different Neotoma species in the community.

Download Full-text

Late Quaternary paleolimnology of Onepoto maar, Auckland, New Zealand: Implications for the drivers of regional paleoclimate

Quaternary International ◽

10.1016/j.quaint.2011.02.028 ◽

2012 ◽

Vol 253 ◽

pp. 18-31 ◽

Cited By ~ 18

Author(s):

Paul Augustinus ◽

Ursula Cochran ◽

Giri Kattel ◽

Donna D’Costa ◽

Phil Shane

Keyword(s):

New Zealand ◽

Late Quaternary

Download Full-text

A late Quaternary stratigraphic framework for the northeastern Ruapehu and eastern Tongariro ring plains, New Zealand

New Zealand Journal of Geology and Geophysics ◽

10.1080/00288306.1997.9514752 ◽

1997 ◽

Vol 40 (2) ◽

pp. 185-197 ◽

Cited By ~ 38

Author(s):

Shane J. Cronin ◽

Vincent E. Neall

Keyword(s):

New Zealand ◽

Late Quaternary ◽

Stratigraphic Framework

Download Full-text

Geodetic strain and the deformational history of the North Island of New Zealand during the late Cainozoic

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences ◽

10.1098/rsta.1987.0009 ◽

1987 ◽

Vol 321 (1557) ◽

pp. 163-181 ◽

Cited By ~ 207

Keyword(s):

New Zealand ◽

Subduction Zone ◽

East Coast ◽

Late Quaternary ◽

Plate Boundary ◽

Boundary Zone ◽

Metamorphic Belt ◽

Volcanic Region ◽

The North ◽

Plate Boundary Zone

The subduction zone under the east coast of the North Island of New Zealand comprises, from east to west, a frontal wedge, a fore-arc basin, uplifted basement forming the arc and the Central Volcanic Region. Reconstructions of the plate boundary zone for the Cainozoic from seafloor spreading data require the fore-arc basin to have rotated through 60° in the last 20 Ma which is confirmed by palaeomagnetic declination studies. Estimates of shear strain from geodetic data show that the fore-arc basin is rotating today and that it is under extension in the direction normal to the trend of the plate boundary zone. The extension is apparently achieved by normal faulting. Estimates of the amount of sediments accreted to the subduction zone exceed the volume of the frontal wedge: underplating by the excess sediments is suggested to be the cause of late Quaternary uplift of the fore-arc basin. Low-temperature—high-pressure metamorphism may therefore be occurring at depth on the east coast and high-temperature—low-pressure metamorphism is probable in the Central Volcanic Region. The North Island of New Zealand is therefore a likely setting for a paired metamorphic belt in the making.

Download Full-text

Base de datos de fallas cuaternarias de México

Terra Digitalis ◽

10.22201/igg.terradigitalis.2017.1.3 ◽

2017 ◽

Vol 1 (1) ◽

Cited By ~ 2

Author(s):

Gonzalo Cid Villegas ◽

Carlos Mendoza ◽

Luca Ferrari

Keyword(s):

Information System ◽

Slip Rate ◽

Fault Geometry ◽

The Holocene ◽

Class A ◽

Class B ◽

Fault Information ◽

Fault Length ◽

Geologic Data

We present a Geographic Information System (GIS) database that synthesizes information on the geometry, the sense of movement and the last displacement on known Quaternary faults in Mexico. Faults are classified according to the age of the last known geologic displacement and the quantity and quality of the information available. Class A faults have documented displacement in the Holocene; Class B faults have Pleistocene displacement with possible reactivation in the Holocene; and Class C faults have a last known displacement in the Pleistocene. The database includes the fault name, the type of fault, the fault geometry, the fault length, the evidence for displacement, the slip rate, the recurrence interval, and the size of the most recent earthquake associated with each fault. The database compiles Quaternary fault information for Mexico that can be readily updated as more geologic data become available.

Download Full-text