A5041488525- Geology and Paleoclimatology Research
- Pleistocene-Era Hominins and Archaeology
- Geological and Geochemical Analysis
- Geological formations and processes
- Evolution and Paleontology Studies
- Isotope Analysis in Ecology
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Geomagnetism and Paleomagnetism Studies
- Pacific and Southeast Asian Studies
- Geological and Geophysical Studies
- Methane Hydrates and Related Phenomena
- Archaeology and ancient environmental studies
- Paleontology and Stratigraphy of Fossils
- Iron oxide chemistry and applications
- Marine animal studies overview
- Landslides and related hazards
- Marine Biology and Ecology Research
- Mineralogy and Gemology Studies
- Lichen and fungal ecology
- Primate Behavior and Ecology
- Aeolian processes and effects
- Planetary Science and Exploration
- Geochemistry and Elemental Analysis
- Geological and Geophysical Studies Worldwide
Australian National University
2014-2024
University of Plymouth
2004
University of Iceland
2004
Aberystwyth University
2004
University of Wales
2004
Commonwealth Scientific and Industrial Research Organisation
2001
The University of Melbourne
2000
Kanazawa University
1999
Victoria University of Wellington
1985-1996
About 140,000 years ago, the breakup of large continental ice sheets initiated Last Interglacial period. Sea level rose and peaked around 135,000 ago about 14 meters below present levels. A record sea levels between 116,000 to 136, 000 is preserved at reef VII uplifted coral terraces Huon Peninsula in Papua New Guinea. However, corals from a cave situated 90 crest are 130, +/- 2000 old appear have grown conditions that were 6 degreesC cooler than those present. These observations imply drop...
Research Article| May 01, 1983 Upper Quaternary marine terrace chronology and deformation, South Taranaki, New Zealand Brad Pillans 1Department of Geography, Australian National University, P.O. Box 4, Canberra City 2600, Australia Search for other works by this author on: GSW Google Scholar Author Article Information Publisher: Geological Society America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print 0091-7613 Geology (1983) 11 (5): 292–297....
Uplifted coral terraces at Huon Peninsula, Papua New Guinea, preserve a record of sea level, sea-surface temperature, and salinity from the penultimate deglaciation. Remnants have been found shallow-water reef that formed during pause, similar to Younger Dryas, in deglaciation 130,000 +/- 2000 years ago, when level was 60 80 meters lower than it is today. Porites coral, which grew this period, has oxygen isotopic values strontium/calcium ratios indicate temperatures were much cooler (22...
The mid-Pleistocene transition (MPT, c. 1.2 to 0.5 Ma) records fundamental changes in Earth's climate state, where low-amplitude 41-kyr obliquity-dominated cycles gave way progressively the high-amplitude, quasiperiodic (c.100-kyr) fluctuations that characterize later Pleistocene and Holocene.We use wavelet analysis on LR04 ! 18O benthic foraminiferal stack confirm low-frequency power as early 1.25-1.20Ma, determine persistence of cyclicity through beyond MPT, reveal new levels complexity...
ABSTRACT Both the rate and vertical distribution of soil disturbance modify properties such as porosity, particle size, chemical composition age structure; all which play an important role in a soil's biogeochemical functioning. Whereas rates mixing have been previously quantified, nature bioturbation's depth dependence remains poorly constrained. Here we constrain, for first time, relationship between bioturbated northeast Queensland, Australia using novel method combining OSL...
Abstract Determination of hematite contributions to sedimentary magnetizations is an important but difficult task in quantitative environmental studies. The poorly crystalline and fine-grained nature nanoparticles makes quantification their concentrations natural environments challenging using mineralogical spectroscopic methods, while the weak magnetization often significant superparamagnetic nanoparticle make magnetic remanence measurements. We demonstrate here that much-used parameters,...
Research Article| May 01, 1992 Dating loess up to 800 ka by thermoluminescence Glenn W. Berger; Berger 1Department of Geology, Western Washington University, Bellingham, 98225-9080 Search for other works this author on: GSW Google Scholar Brad J. Pillans; Pillans 2Department Victoria University Wellington, New Zealand Alan S. Palmer 3Department Soil Science, Massey Palmerston North, Geology (1992) 20 (5): 403–406. https://doi.org/10.1130/0091-7613(1992)020<0403:DLUTKB>2.3.CO;2 Article...
Abstract Vitric‐rich volcaniclastic horizons are important for correlation of glacio‐eustatic sedimentary cycles, both within the well known shallow‐marine record Wanganui Basin, and other New Zealand terrestrial deep marine records. They also distal major rhyolitic eruptions from Taupo (TVZ) Coromandel (CVZ) Volcanic Zones that lacking in proximal source areas. Twenty‐eight recognised Castlecliffian late Nukumaruan strata Basin glass shard element geochemistry stratigraphic position, dated...
Abstract Warm‐water molluscs were transported to Wanganui Basin from the northeastern North Island during Pleistocene time as planktotrophic larvae. This is not possible at present, so their occurrence in correlates with breaches of Auckland isthmus high sea levels. The end Nukumaruan clearly defined by extinction 29 genera (most only locally) this stage, including 15 end. likely was caused initial closure isthmus. Migrants indicate that interglacials commenced oxygen isotope stage (OIS) 25,...