A5032018479- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Paleontology and Stratigraphy of Fossils
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Archaeology and ancient environmental studies
- Pleistocene-Era Hominins and Archaeology
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Peatlands and Wetlands Ecology
- Methane Hydrates and Related Phenomena
- Pacific and Southeast Asian Studies
- Forensic Anthropology and Bioarchaeology Studies
- Tree-ring climate responses
- Evolution and Paleontology Studies
- Coastal wetland ecosystem dynamics
- Marine and environmental studies
- Climate change and permafrost
- Hydraulic Fracturing and Reservoir Analysis
- Geochemistry and Geologic Mapping
- Groundwater and Isotope Geochemistry
- Cryospheric studies and observations
- Aeolian processes and effects
- Mercury impact and mitigation studies
- Ocean Acidification Effects and Responses
Queen's University Belfast
2007-2022
School of Planning and Architecture Delhi
2014
ENVIRON (United States)
2008
National University of Ireland
2006
Establishing the cause of past extinctions is critical if we are to understand better what might trigger future occurrences and how prevent them. The mechanisms continental late Pleistocene megafaunal extinction, however, still fiercely contested. Potential factors contributing their demise include climatic change, human impact, or some combination. On Australian mainland, 90% megafauna became extinct by approximately 46 thousand years (ka) ago, soon after first archaeological evidence for...
Abstract Despite being one of the world’s oldest deserts, and subject decades research, evidence past climate change in Namib Desert is extremely limited. As such, there significant debate regarding nature drivers low-latitude drylands southwestern Africa. Here we present data from stratified accumulations rock hyrax urine that provide first continuous high-resolution terrestrial record for spanning 50,000 yr. These data, multiple sites, show remarkably coherent variability clearly linked to...
We have subdivided single tree rings into between 24 and 35 contiguous samples measured the δ 13 C value for each. These high‐resolution measurements show a previously unobserved spring depletion as part of pattern enrichment‐depletion‐enrichment‐depletion through growing season opposed to depletion‐enrichment‐depletion cycle thought exist. The earlywood/latewood transition does not coincide with identifiable isotopic boundaries therefore is suitable demarcation point sampling palaeoclimatic...
Lower Cretaceous meandering and braided fluvial sandstones of the Nubian Formation form some most important subsurface reservoir rocks in Sirt Basin, north‐central Libya. Mineralogical, petrographical geochemical analyses sandstone samples from well BB6–59, Sarir oilfield, indicate that are fine‐ to very fine‐grained subarkosic arenites (av. Q 91 F 5 L 4 ), medium‐ coarse‐grained quartz 96 3 1 ). The qualities these were modified during both eodiagenesis (ca. <70°C; <2 km)...
Abstract The La Laja Formation (Early to Middle Cambrian) is one of the oldest units exposed at base lower Paleozoic carbonate platform Argentina Precordillera. This a key unit regarding hypothesis Precordillera as Laurentia-derived allochthonous terrane currently located in south-central Andes. According faunal affinity and stratigraphic development thick Cambrian bank, Argentine would have been attached Laurentia. contrasts with rest overlying Cambro-Ordovician by being partly mixed...
A number of recent studies have highlighted the importance freshwater reservoir effects (FRE) when dating human remains across large parts Eurasia, including Eurasian steppes. Here, we address this question in context Early Bronze Age (Okunevo), Late (Karasuk) and Iron (Tashtyk culture) Minusinsk Basin, Southern Siberia. The issue is important given radiocarbon dates that been published on here, which used both to refine cultural historical sequence (Svyatko et al. 2009), as well suggest a...
The climatic effects of historical volcanic eruptions are well documented in the literature. What less certain however, on more distant environments, particularly vegetation. Here we present sub‐annual δ 13 C records from two high‐resolution Irish oak ( Quercus spp.) chronologies that span Laki (Grímsvötn) 1783–84 and Tambora 1815 eruptions. In both instances, a significant depletion is recorded within trees following eruption (∼1.8‰). Historical meteorological datasets observatories near to...
Few papers using hydrogen stable isotope analysis for human palaeodietary reconstruction purposes have been published and the usefulness of this additional dietary indicator is highlighted here. The results provide evidence continued exploitation aquatic resources throughout prehistory Limfjord area in Denmark, which supported by FRUITS estimates three (CNH) isotopic proxies. While input has identified Mesolithic Viking Age individuals before, our show that, fact, periods between (Neolithic,...