A5066571909- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Hydrocarbon exploration and reservoir analysis
- Geological and Geochemical Analysis
- Isotope Analysis in Ecology
- Geological Studies and Exploration
- Geochemistry and Elemental Analysis
- Evolution and Paleontology Studies
- Paleontology and Evolutionary Biology
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Geological and Geophysical Studies
- Marine Biology and Ecology Research
- Geological Formations and Processes Exploration
- Geochemistry and Geologic Mapping
- Astro and Planetary Science
- Marine Bivalve and Aquaculture Studies
- Nuclear Physics and Applications
- Pleistocene-Era Hominins and Archaeology
- Cephalopods and Marine Biology
- Marine and environmental studies
- Geological and Geophysical Studies Worldwide
- Heavy metals in environment
- Atmospheric and Environmental Gas Dynamics
- Marine and fisheries research
University of Plymouth
2016-2025
Goethe University Frankfurt
2023
James Cook University
2012
North Carolina Agricultural and Technical State University
2006
Queen's University Belfast
1996-2003
Plasma (Russia)
1998-1999
Duke Medical Center
1997-1999
Applied Pulsed Power (United States)
1996-1999
Plasma Technology (United States)
1996-1999
Lawrence Berkeley National Laboratory
1996-1999
ABSTRACT The L ate J urassic to E arly C retaceous interval represents a time of environmental upheaval and cataclysmic events, combined with disruptions terrestrial marine ecosystems. Historically, the urassic/ ( / K ) boundary was classified as one eight mass extinctions. However, more recent research has largely overturned this view, revealing much complex pattern biotic abiotic dynamics than previously been appreciated. Here, we present synthesis our current knowledge Late Jurassic–Early...
Surface temperature is a fundamental parameter of Earth's climate. Its evolution through time commonly reconstructed using the oxygen isotope and clumped compositions carbonate archives. However, reaction kinetics involved in precipitation carbonates can introduce inaccuracies derived temperatures. Here, we show that dual analyses, i.e., simultaneous ∆47 ∆48 measurements on single phase, identify origin quantify extent these kinetic biases. Our results verify theoretical predictions evidence...
This contribution presents the first detailed oxygen and carbon isotope record from latest Jurassic–early Cretaceous interval of Yatria River, subpolar Urals, Siberia. Isotopic compositions have been determined on well-preserved belemnite samples genera Lagonibelus , Cylindroteuthis Acroteuthis . These new data indicate a shift to lower temperatures late Volgian into Valanginian, with some warmer phases recognized within Ryazanian earliest Valanginian. The lowest consistent subfreezing polar...
Research Article| March 01, 2010 Valanginian isotope variation in glendonites and belemnites from Arctic Svalbard: Transient glacial temperatures during the Cretaceous greenhouse Gregory D. Price; Price 1School of Geography, Earth Environmental Sciences, University Plymouth, Drake Circus, Plymouth PL4 8AA, UK Search for other works by this author on: GSW Google Scholar Elizabeth V. Nunn 2Department Applied Analytical Paleontology, Institute Geosciences, Johannes Gutenberg-Universität Mainz,...
Abstract The oceanic anoxic event in the Early Toarcian, often referred to as ‘Torcian Oceanic Anoxic Event’, led widespread deposition of organic‐rich black shales and geochemical anomalies elemental distribution multiple isotope systems Jurassic ocean. Best characterized by its hallmark carbon anomaly, is widely regarded a prime example rapid greenhouse warming‐related changes Mesozoic Earth system. However, despite numerous studies, details forcing mechanisms, exact duration role regional...
The late Permian mass extinction event was the largest biotic crisis of Phanerozoic and has longest recovery interval any event. It been hypothesised that subsequent carbon isotope perturbations during Early Triassic are associated with crises impeded benthic recovery. We test this hypothesis by undertaking highest-resolution study yet made rock fossil records entire Werfen Formation, Italy. Here, we show elevated rates were recorded not only in Dienerian, as previously recognised, but also...
The application of carbonate clumped isotope (Δ47) thermometry in deep-time is often limited by modification the original temperature signal thermal resetting. New modeling approaches to estimate initial isotopic composition partially reset calcites and maximal burial temperatures, however, open promising avenues reconstruction. Such strongly depend on laboratory-derived kinetic parameters calcite materials, which may differ their microstructure, water content distribution, minor trace...
Oxygen and carbon isotopic compositions have been determined from the belemnite genera Acroteuthis Hibolites sampled early Cretaceous (Ryazanian–Hauterivian) interval of Speeton Clay Formation, Filey Bay, England. The Formation consists a series claystones calcareous mudrocks deposited in an epicontinental sea. δ 18 O values belemnites, which met petrographic chemical criteria for well preserved skeletal carbonate, indicate warm marine palaeotemperatures (c. 12–15°C) much Valanginian whilst...
Abstract: The stable isotope data presented here significantly extend and expand upon previous isotopic investigations of the Middle to Late Jurassic interval. belemnite samples collected from Staffin Bay Shale formations Isle Skye, Scotland, yielded oxygen values consistent with Callovian–Kimmeridgian palaeotemperatures 6.7–20.6 °C. carbon comprise one first moderately high-resolution relationship between terrestrial δ 13 C org (predominantly fossil wood debris) marine carb (belemnites) as...
A common feature of records the early Aptian oceanic anoxic event (OAE) 1a is sharp negative δ 13 C excursion displayed in both carbonate and organic matter at onset this event. synchronous has also been noted for terrestrial matter. This attributed to either an injection C‐depleted light carbon into atmosphere or, case marine sediments, recycling CO 2 . However, most studies were done on separate cores, no information relative timing spikes versus obtained. Here we examine core sections...
Abstract New fieldwork was carried out in the central and eastern Alborz, addressing sedimentary succession from Pennsylvanian to Early Triassic. A regional synthesis is proposed, based on analysis a wide collection of new palaeontological data. The Moscovian Qezelqaleh Formation, deposited mixed coastal marine alluvial setting, present restricted area transgressing Lower Carboniferous Mobarak Dozdehband formations. late Gzhelian–early Sakmarian Dorud Group instead distributed over most...
Atmospheric CO2 concentrations appear to have been considerably higher than modern levels during much of the Phanerozoic and it has hence proposed that surface temperatures were also higher. Some studies have, however, suggested Earth's temperature (estimated from isotopic composition fossil shells) may independent variations in atmospheric (e.g. Jurassic Cretaceous). If large changes did not produce expected climate responses past, predictions future case for reducing current fossil-fuel...
Research Article| August 01, 2013 Dynamic polar climates in a greenhouse world: Evidence from clumped isotope thermometry of Early Cretaceous belemnites Gregory D. Price; Price 1School Geography, Earth and Environmental Sciences, Plymouth University, PL4 8AA, UK Search for other works by this author on: GSW Google Scholar Benjamin H. Passey 2Department Planetary Johns Hopkins Baltimore, Maryland 21218, USA Geology (2013) 41 (8): 923–926. https://doi.org/10.1130/G34484.1 Article history...
Climate warming during the late Permian is associated with most severe mass extinction event of Phanerozoic, and expansion hypoxic anoxic conditions in shallow shelf settings. It has been hypothesised that wave aeration provided a 'habitable zone' shallowest environments allowed survival rapid recovery benthic invertebrates Early Triassic. We test this hypothesis by studying rock fossil records Aggtelek Karst, Hungary. Nearshore settings recorded Bódvaszilas Sandstone Formation units A D...
Glendonites, pseudomorphs after marine sedimentary ikaite, are found throughout the Lower Cretaceous succession of Svalbard.Existing models for ikaite-to-glendonite formation do not explain different petrological fabrics observed in glendonites Svalbard.This study presents an improved model these glendonites, based on petrographic and geochemical observations, published work ikaite breakdown (e.g.Tang et al., 2009).We show that lower Svalbard, methane is unlikely to be sole or indeed main...
Abstract The Early Cretaceous (145–100 Ma) was characterized by long-term greenhouse climates, with a reduced equatorial to polar temperature gradient, although an increasingly large body of evidence suggests that this period punctuated episodic global “cold snaps.” Understanding climate dynamics during high-atmospheric CO2 Earth’s history may have significant impact on how we understand climatic feedbacks and predict future changes under anthropogenically-driven high-pCO2 atmosphere. This...