Search Results - "Jull, Timothy"
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Fire-induced erosion and millennial-scale climate change in northern ponderosa pine forests
Published in Nature (04-11-2004)“…Western US ponderosa pine forests have recently suffered extensive stand-replacing fires followed by hillslope erosion and sedimentation. These fires are…”
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Coupled European and Greenland last glacial dust activity driven by North Atlantic climate
Published in Proceedings of the National Academy of Sciences - PNAS (12-12-2017)“…Centennial-scale mineral dust peaks in last glacial Greenland ice cores match the timing of lowest Greenland temperatures, yet little is known of equivalent…”
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3
Rapid 14C excursion at 3372-3371 BCE not observed at two different locations
Published in Nature communications (29-01-2021)Get full text
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Fluctuating radiocarbon offsets observed in the southern Levant and implications for archaeological chronology debates
Published in Proceedings of the National Academy of Sciences - PNAS (12-06-2018)“…Considerable work has gone into developing high-precision radiocarbon (14C) chronologies for the southern Levant region during the Late Bronze to Iron…”
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The Meteoritical Bulletin, No. 109
Published in Meteoritics & planetary science (01-08-2021)“…Meteoritical Bulletin 109 contains the 2790 meteorites approved by the Nomenclature Committee of the Meteoritical Society in 2020. It includes 17 falls (Al…”
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Eccentricity-paced geomagnetic field and monsoon rainfall variations over the last 870 kyr
Published in Proceedings of the National Academy of Sciences - PNAS (25-04-2023)“…Whether there are links between geomagnetic field and Earth's orbital parameters remains unclear. Synchronous reconstructions of parallel long-term…”
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Annual radiocarbon record indicates 16th century BCE date for the Thera eruption
Published in Science advances (01-08-2018)“…The mid-second millennium BCE eruption of Thera (Santorini) offers a critically important marker horizon to synchronize archaeological chronologies of the…”
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Unravelling the high-altitude Nansen blue ice field meteorite trap (East Antarctica) and implications for regional palaeo-conditions
Published in Geochimica et cosmochimica acta (01-03-2019)“…Antarctic blue ice zones, the most productive locations for meteorite recovery on Earth, contain old ice that is easily accessible and available in large…”
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The old, unique C1 chondrite Flensburg – Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies
Published in Geochimica et cosmochimica acta (15-01-2021)“…On September 12, 2019 at 12:49:48 (UT) a bolide was observed by hundreds of eye-witnesses from the Netherlands, Germany, Belgium, Denmark and the UK. One day…”
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Publisher Correction: Rapid 14C excursion at 3372-3371 BCE not observed at two different locations
Published in Nature communications (23-02-2021)“…A Correction to this paper has been published: https://doi.org/10.1038/s41467-021-21647-w…”
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Modulation of Cosmogenic Tritium in Meteoric Precipitation by the 11-year Cycle of Solar Magnetic Field Activity
Published in Scientific reports (24-08-2018)“…The relationship between the atmospheric concentration of cosmogenic isotopes, the change of solar activity and hence secondary neutron flux has already been…”
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Postglacial climate-change record in biomarker lipid compositions of the Hani peat sequence, Northeastern China
Published in Earth and planetary science letters (15-05-2010)“…The peat sequence at Hani in northeastern China accumulated over the past 16 cal kyr in a percolation mire in which rain water and ground water seeped through…”
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Spring buds of European woody plants have old 14C age
Published in Heliyon (30-06-2024)“…Trees and shrubs maintain carbon reserves to support their functions during periods when metabolic demand exceeds carbon supply, such as during the dormant…”
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Radiocarbon dating, reservoir effects, and calibration
Published in Quaternary international (19-06-2013)“…We summarize how radiocarbon measurements are made using accelerator mass spectrometry. We also discuss some complications inherent in the radiocarbon-dating…”
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Two billion years of magmatism recorded from a single Mars meteorite ejection site
Published in Science advances (01-02-2017)“…The timing and nature of igneous activity recorded at a single Mars ejection site can be determined from the isotope analyses of Martian meteorites. Northwest…”
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Interplay between the Westerlies and Asian monsoon recorded in Lake Qinghai sediments since 32 ka
Published in Scientific reports (31-08-2012)Get full text
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Mineralogy, geochemistry and classification of the new Smolenice iron meteorite from Slovakia
Published in Geologica Carpathica (01-06-2020)Get full text
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The timing of the ca-660 BCE Miyake solar-proton event constrained to between 664 and 663 BCE
Published in Communications earth & environment (01-01-2024)“…Extreme solar energetic particle events, known as Miyake events, are rare phenomena observed by cosmogenic isotopes, with only six documented. The timing of…”
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Douglas Fir Multiproxy Tree-Ring Data Glimpse MIS 5 Environment in the U.S. Pacific Northwest
Published in Forests (01-12-2022)“…Proxy records from the late Quaternary help in understanding climate variability on extended time scales. An ancient landslide deposit in Oregon U.S.A…”
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The L3-6 chondritic regolith breccia Northwest Africa (NWA) 869: (II) Noble gases and cosmogenic radionuclides
Published in Meteoritics & planetary science (01-07-2011)“…– We measured cosmogenic radionuclides and noble gases in the L3–6 chondrite breccia Northwest Africa (NWA) 869, one of the largest meteorite finds from the…”
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