Ian Jarvis

ORCID: 0000-0003-3184-3097
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About
Contact & Profiles
Research Areas
  • Paleontology and Stratigraphy of Fossils
  • Geology and Paleoclimatology Research
  • Geochemistry and Elemental Analysis
  • Geological and Geochemical Analysis
  • Geological formations and processes
  • Hydrocarbon exploration and reservoir analysis
  • Geochemistry and Geologic Mapping
  • Geological and Geophysical Studies Worldwide
  • Radioactive element chemistry and processing
  • Analytical chemistry methods development
  • Drilling and Well Engineering
  • Geological Studies and Exploration
  • Remote Sensing in Agriculture
  • Geological and Geophysical Studies
  • Reservoir Engineering and Simulation Methods
  • Methane Hydrates and Related Phenomena
  • Paleontology and Evolutionary Biology
  • Offshore Engineering and Technologies
  • Climate change impacts on agriculture
  • Marine and environmental studies
  • Marine Biology and Ecology Research
  • Remote Sensing and Land Use
  • Atmospheric and Environmental Gas Dynamics
  • Soil and Water Nutrient Dynamics
  • Heavy metals in environment

Kingston University
2014-2023

World Meteorological Organization
2018-2023

Grantmakers for Effective Organizations
2022

PerkinElmer (United States)
2022

PerkinElmer (Ireland)
2022

Kingston University
2022

Trinity College Dublin
2018

Institute of Arctic and Alpine Research
2018

University of Colorado Boulder
2018

University of Lausanne
2018

Carbon stable-isotope variation through the Cenomanian–Santonian stages is characterized using data for 1769 bulk pelagic carbonate samples collected from seven Chalk successions in England. The sections show consistent stratigraphic trends and δ 13 C values that provide a basis high-resolution correlation. Positive negative excursions inflection points on isotope profiles are used to define 72 events. Key markers provided by positive of up +2‰: Albian/Cenomanian Boundary Event;...

10.1017/s0016756806002421 article EN Geological Magazine 2006-07-03

Oceanic Anoxic Event 2 (OAE2), spanning the Cenomanian‐Turonian boundary (CTB), represents one of largest perturbations in global carbon cycle last 100 Myr. The δ 13 C carb , org and 18 O chemostratigraphy a black shale–bearing CTB succession Vocontian Basin France is described correlated at high resolution to European reference section Eastbourne, England, successions Germany, equatorial midlatitude proto‐North Atlantic, U.S. Western Interior Seaway (WIS). Δ (offset between ) shown be good...

10.1029/2010pa002081 article EN Paleoceanography 2011-07-18

Raman spectrometry is a rapid, non-destructive alternative to conventional tools employed assess the thermal alteration of organic matter (OM). may be used determine vitrinite reflectance equivalent OM maturity values for petroleum exploration, provide temperature data metamorphic studies, and maximum temperatures reached in fault zones. To achieve wider utilisation Raman, spectrum processing method, positions nomenclature bands parameters, all need standardized. We most widely parameters as...

10.1016/j.earscirev.2019.102936 article EN cc-by-nc-nd Earth-Science Reviews 2019-08-25

High-resolution osmium (Os) isotope stratigraphy across the Cenomanian–Turonian Boundary Interval from 6 sections for four transcontinental settings has produced a record of seawater chemistry that demonstrates regional variability as function terrestrial and hydrothermal inputs, revealing impact palaeoenvironmental processes. In every section 187Os/188Os profiles show comparable trend; radiogenic values in lead up to Oceanic Anoxic Event 2 (OAE 2); an abrupt unradiogenic trend at onset OAE...

10.1016/j.epsl.2013.12.024 article EN cc-by Earth and Planetary Science Letters 2014-01-06

An oxygen-rich atmosphere is essential for complex animals. The early Earth had an anoxic atmosphere, and understanding the rise maintenance of high O2 levels critical investigating what drove our own evolution assessing likely habitability exoplanets. A growing number techniques aim to reproduce changes in over Phanerozoic Eon (the past 539 million years). We assess these methods attempt draw reliable together form a consensus curve. conclude that probably made up around 5–10% during...

10.1146/annurev-earth-032320-095425 article EN Annual Review of Earth and Planetary Sciences 2023-01-06

Mercury (Hg) is increasingly being used as a sedimentary tracer of Large Igneous Province (LIP) volcanism, and supports hypotheses coincidence between the formation several LIPs episodes mass extinction major environmental perturbation. However, numerous important questions remain to be answered before Hg can claimed an unequivocal fingerprint LIP well understanding why some records document clear enrichment signals whilst others do not. Of particular importance evaluating impact different...

10.2475/08.2018.01 article EN American Journal of Science 2018-10-01

Remotely sensed Earth observations (EO) have their history firmly rooted in agricultural monitoring, and more recently with applications food production, security, sustainable agriculture. Still, after than 45 years of observing the Earth's land surface, usage EO data by operational monitoring entities concerned global agriculture is uneven. One reason for this a gap continuous communication collaboration between those who undertake research development methods cropland assessment mandate to...

10.1016/j.rse.2019.111470 article EN cc-by-nc-nd Remote Sensing of Environment 2019-11-01

Accurate cropland information is of paramount importance for crop monitoring. This study compares five existing mapping methodologies over contrasting Joint Experiment Crop Assessment and Monitoring (JECAM) sites medium to large average field size using the time series 7-day 250 m Moderate Resolution Imaging Spectroradiometer (MODIS) mean composites (red near-infrared channels). Different strategies were devised assess accuracy classification methods: confusion matrices derived indicators...

10.1080/01431161.2016.1194545 article EN cc-by International Journal of Remote Sensing 2016-06-28

Understanding the state and trends in agriculture production is essential to combat both short-term long-term threats stable reliable access food for all, ensure a profitable agricultural sector. In 2007, Agriculture Agri-Food Canada (AAFC) took its first steps towards development of an operational software system mapping crop types individual fields using satellite observations. Focusing on Prairie Provinces 2009 2010, Decision Tree (DT) based methodology was applied optical (Landsat-5,...

10.1109/argo-geoinformatics.2013.6621920 article EN 2013-08-01

• Crop Monitor provides consensus crop assessments for countries at risk. The goal is to reduce ambiguity in food security decisions. Achieved through international coordination sharing of data, methods and expertise EO play key role early warning especially Early reduced production component SDG2 Zero Hunger.

10.1016/j.rse.2019.111553 article EN cc-by-nc-nd Remote Sensing of Environment 2019-12-23

Laser Raman spectroscopy is used to assess the thermal maturity of organic matter in sedimentary rocks, particularly organic-rich mudstones. However, discrepancies exist between quantified spectral parameters and values obtained by vitrinite reflectance. This has prevented adoption a standard protocol for determination (OM) spectroscopy. We have examined factors influencing spectra from low-maturity OM potential shale gas reservoir rocks. The inconsistencies results are due three main that...

10.1016/j.coal.2018.03.005 article EN cc-by-nc-nd International Journal of Coal Geology 2018-03-17

The elemental (Si, Ti, Al, Mn, Ca, Zr) and carbon stable-isotope (δ 13 C) geochemistry of a biostratigraphically well-constrained Cenomanian–Turonian (Upper Cretaceous) Chalk succession on the Isle Wight, southern England, shows systematic variation that corresponds closely to published sequence stratigraphic model for Cenomanian. Six sequences their constituent systems tracts, defined elsewhere using sedimentological criteria, are clearly distinguishable from bulk-sediment profiles, an...

10.1144/jgs.158.4.685 article EN Journal of the Geological Society 2001-07-01

Synthetic multielement solutions of the platinum group metals (PGE: Ru; Rh; Pd; Ir; Pt) and gold, with analysis by ICP-AES ICP-MS, have been used to study behaviour precious on Dowex 1-X8 resin. Simple precious-metal chlorocomplexes showed near-complete adsorption (>99%) most elements, only minor breakthrough Ru (≈5%). Solutions pre-treated acid mixtures typically decompose geological samples, demonstrated that perchloric adversely affects PGEs treated HF–HNO 3 –HCl maintained good retention...

10.1039/a606169i article EN The Analyst 1997-01-01

Abstract Carbon (δ 13 C org , δ carb ) and oxygen 18 O isotope records are presented for an expanded Upper Cretaceous (Turonian–Coniacian) hemipelagic succession cored in the central Bohemian Basin, Czech Republic. Geophysical logs, biostratigraphy stable carbon chemostratigraphy provide a high‐resolution stratigraphic framework. The profiles compared, time series correlated with published coeval marine non‐marine from Europe, North America Japan. All previously named Turonian events...

10.1002/dep2.6 article EN cc-by The Depositional Record 2015-12-01

Abstract Carbon sources and sinks are key components of the climate feedback system, yet their response to external forcing remains poorly constrained, particularly for past greenhouse climates. Carbon‐isotope data indicate systematic, million‐year‐scale transfers carbon between surface reservoirs during immediately after Late Cretaceous thermal maximum (peaking in Cenomanian‐Turonian, circa 97–91 million years, Myr, ago). Here we calibrate Albian Campanian (108–72 Myr ago) high‐resolution...

10.1002/2014pa002736 article EN Paleoceanography 2015-01-26
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