Subjects -> EARTH SCIENCES (Total: 771 journals)
    - EARTH SCIENCES (527 journals)
    - GEOLOGY (94 journals)
    - GEOPHYSICS (33 journals)
    - HYDROLOGY (29 journals)
    - OCEANOGRAPHY (88 journals)

EARTH SCIENCES (527 journals)                  1 2 3 | Last

Showing 1 - 200 of 371 Journals sorted alphabetically
ACS Earth and Space Chemistry     Free   (Followers: 6)
Acta Brasiliensis     Open Access  
Acta Geochimica     Hybrid Journal   (Followers: 6)
Acta Geodaetica et Geophysica     Hybrid Journal   (Followers: 2)
Acta Geológica Lilloana     Open Access  
Acta Geophysica     Hybrid Journal   (Followers: 9)
Acta Geotechnica     Hybrid Journal   (Followers: 6)
Acta Meteorologica Sinica     Hybrid Journal   (Followers: 4)
Advances in High Energy Physics     Open Access   (Followers: 23)
Advances in Limnology     Full-text available via subscription   (Followers: 2)
Advances In Physics     Hybrid Journal   (Followers: 29)
Aeolian Research     Hybrid Journal   (Followers: 7)
African Journal of Aquatic Science     Hybrid Journal   (Followers: 17)
AGU Advances     Open Access  
Algological Studies     Full-text available via subscription   (Followers: 1)
All Earth     Open Access   (Followers: 2)
Alpine Botany     Hybrid Journal   (Followers: 4)
AMBIO     Hybrid Journal   (Followers: 11)
Anales del Instituto de la Patagonia     Open Access  
Andean geology     Open Access   (Followers: 10)
Annales Henri Poincaré     Hybrid Journal   (Followers: 2)
Annals of Geophysics     Open Access   (Followers: 12)
Annals of GIS     Open Access   (Followers: 30)
Annual Review of Marine Science     Full-text available via subscription   (Followers: 12)
Anthropocene     Hybrid Journal   (Followers: 6)
Anthropocene Review     Hybrid Journal   (Followers: 9)
Anuário do Instituto de Geociências     Open Access  
Applied Clay Science     Hybrid Journal   (Followers: 6)
Applied Computing and Geosciences     Open Access   (Followers: 3)
Applied Geochemistry     Hybrid Journal   (Followers: 14)
Applied Geomatics     Hybrid Journal   (Followers: 4)
Applied Geophysics     Hybrid Journal   (Followers: 11)
Applied Ocean Research     Hybrid Journal   (Followers: 6)
Applied Petrochemical Research     Open Access   (Followers: 2)
Aquatic Conservation Marine and Freshwater Ecosystems     Hybrid Journal   (Followers: 44)
Arctic Science     Open Access   (Followers: 7)
Arctic, Antarctic, and Alpine Research     Open Access   (Followers: 12)
arktos : The Journal of Arctic Geosciences     Hybrid Journal  
Artificial Intelligence in Geosciences     Open Access   (Followers: 6)
Artificial Satellites     Open Access   (Followers: 21)
Asia-Pacific Journal of Atmospheric Sciences     Hybrid Journal   (Followers: 21)
Asian Journal of Earth Sciences     Open Access   (Followers: 16)
Asian Journal of Physical and Chemical Sciences     Open Access   (Followers: 2)
Asian Review of Environmental and Earth Sciences     Open Access   (Followers: 1)
Atlantic Geology : Journal of the Atlantic Geoscience Society / Atlantic Geology : revue de la Société Géoscientifique de l'Atlantique     Open Access   (Followers: 10)
Atmosphere-Ocean     Full-text available via subscription   (Followers: 16)
Atmospheric and Climate Sciences     Open Access   (Followers: 30)
Australian Journal of Earth Sciences: An International Geoscience Journal of the Geological Society of Australia     Hybrid Journal   (Followers: 10)
Austrian Journal of Earth Sciences     Open Access   (Followers: 1)
AWWA Water Science     Hybrid Journal   (Followers: 1)
Bonorowo Wetlands     Open Access  
Boreas: An International Journal of Quaternary Research     Hybrid Journal   (Followers: 13)
Brill Research Perspectives in Map History     Full-text available via subscription   (Followers: 1)
Bulletin of Earthquake Engineering     Hybrid Journal   (Followers: 10)
Bulletin of Geosciences     Open Access   (Followers: 11)
Bulletin of the Lebedev Physics Institute     Hybrid Journal  
Bulletin of the Seismological Society of America     Full-text available via subscription   (Followers: 26)
Bulletin of Volcanology     Hybrid Journal   (Followers: 22)
Canadian Mineralogist     Full-text available via subscription   (Followers: 5)
Canadian Water Resources Journal     Hybrid Journal   (Followers: 18)
Carbonates and Evaporites     Hybrid Journal   (Followers: 1)
CATENA     Hybrid Journal   (Followers: 11)
Chemical Geology     Hybrid Journal   (Followers: 31)
Chinese Geographical Science     Hybrid Journal   (Followers: 6)
Ciencia del suelo     Open Access   (Followers: 1)
Ciencias Espaciales     Open Access  
Climate and Development     Hybrid Journal   (Followers: 32)
Coastal Management     Hybrid Journal   (Followers: 29)
Cogent Geoscience     Open Access  
Communications Earth & Environment     Open Access   (Followers: 2)
Comptes Rendus : Geoscience     Open Access   (Followers: 9)
Computational Geosciences     Hybrid Journal   (Followers: 17)
Computational Mathematics and Mathematical Physics     Hybrid Journal   (Followers: 5)
Computers and Geotechnics     Hybrid Journal   (Followers: 12)
Continental Shelf Research     Hybrid Journal   (Followers: 12)
Contributions to Mineralogy and Petrology     Hybrid Journal   (Followers: 11)
Contributions to Plasma Physics     Hybrid Journal   (Followers: 3)
Coral Reefs     Hybrid Journal   (Followers: 22)
Cretaceous Research     Hybrid Journal   (Followers: 10)
Depositional Record     Open Access  
Développement durable et territoires     Open Access   (Followers: 2)
Diatom Research     Hybrid Journal   (Followers: 3)
Doklady Physics     Hybrid Journal   (Followers: 1)
Dynamics of Atmospheres and Oceans     Hybrid Journal   (Followers: 19)
E&S Engineering and Science     Open Access  
E3S Web of Conferences     Open Access  
Earth and Planetary Physics     Open Access   (Followers: 2)
Earth and Planetary Science Letters     Hybrid Journal   (Followers: 142)
Earth and Space Science     Open Access   (Followers: 26)
Earth Interactions     Open Access   (Followers: 10)
Earth Science Malaysia     Open Access  
Earth Science Research     Open Access   (Followers: 9)
Earth Sciences Pakistan     Open Access  
Earth Sciences Research Journal     Open Access  
Earth Surface Dynamics (ESurf)     Open Access   (Followers: 10)
Earth Surface Dynamics Discussions (ESurfD)     Open Access   (Followers: 1)
Earth Surface Processes and Landforms     Hybrid Journal   (Followers: 25)
Earth System Dynamics     Open Access   (Followers: 6)
Earth System Dynamics Discussions     Open Access   (Followers: 3)
Earth Systems and Environment     Hybrid Journal   (Followers: 3)
Earth's Future     Open Access   (Followers: 6)
Earth, Planets and Space     Open Access   (Followers: 77)
Earthquake Engineering and Engineering Vibration     Hybrid Journal   (Followers: 8)
Earthquake Research Advances     Open Access   (Followers: 1)
Earthquake Spectra     Hybrid Journal   (Followers: 20)
Ecohydrology     Hybrid Journal   (Followers: 9)
Ecological Questions     Open Access   (Followers: 5)
Electromagnetics     Hybrid Journal   (Followers: 13)
Energy Efficiency     Hybrid Journal   (Followers: 9)
Energy Exploration & Exploitation     Open Access   (Followers: 4)
Energy Geoscience     Open Access  
Environmental Earth Sciences     Hybrid Journal   (Followers: 29)
Environmental Geology     Hybrid Journal   (Followers: 25)
Environmental Geosciences     Full-text available via subscription   (Followers: 6)
Environmental Geotechnics     Hybrid Journal   (Followers: 6)
Environmental Processes : An International Journal     Hybrid Journal  
Erwerbs-Obstbau     Hybrid Journal  
Estuaries and Coasts     Hybrid Journal   (Followers: 22)
Estuarine, Coastal and Shelf Science     Hybrid Journal   (Followers: 41)
Estudios Geográficos     Open Access   (Followers: 1)
European Journal of Mineralogy     Hybrid Journal   (Followers: 12)
European Journal of Remote Sensing     Open Access   (Followers: 18)
Exploration Geophysics     Hybrid Journal   (Followers: 4)
Facies     Hybrid Journal   (Followers: 9)
FIGEMPA : Investigación y Desarrollo     Open Access   (Followers: 1)
Física de la Tierra     Open Access  
Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica     Open Access  
Forestry Chronicle     Full-text available via subscription   (Followers: 9)
Frontiers in Earth Science     Open Access   (Followers: 8)
Frontiers in Soil Science     Open Access  
Frontiers of Earth Science     Hybrid Journal   (Followers: 12)
Fundamental and Applied Limnology / Archiv für Hydrobiologie     Full-text available via subscription   (Followers: 3)
GEM - International Journal on Geomathematics     Hybrid Journal   (Followers: 1)
Geo-Marine Letters     Hybrid Journal   (Followers: 6)
Geoacta     Open Access   (Followers: 2)
GeoArabia     Hybrid Journal  
Geobiology     Hybrid Journal   (Followers: 8)
Geocarto International     Hybrid Journal   (Followers: 23)
Geochemical Perspectives     Hybrid Journal   (Followers: 2)
Geochemistry     Hybrid Journal   (Followers: 5)
Geochemistry : Exploration, Environment, Analysis     Hybrid Journal   (Followers: 6)
Geochemistry, Geophysics, Geosystems     Full-text available via subscription   (Followers: 35)
Geochimica et Cosmochimica Acta     Hybrid Journal   (Followers: 54)
Geochronology (GChron)     Open Access  
Geochronometria     Open Access   (Followers: 1)
Geoderma Regional : The International Journal for Regional Soil Research     Full-text available via subscription   (Followers: 4)
Geodynamics & Tectonophysics     Open Access   (Followers: 3)
Geoenvironmental Disasters     Open Access   (Followers: 3)
Geofluids     Open Access   (Followers: 5)
Geoforum     Hybrid Journal   (Followers: 25)
Geography and Natural Resources     Hybrid Journal   (Followers: 8)
GeoHazards     Open Access   (Followers: 2)
GeoHealth     Open Access  
Geoheritage     Hybrid Journal   (Followers: 1)
Geoinformatics & Geostatistics     Hybrid Journal   (Followers: 14)
Geologia USP : Série Científica     Open Access   (Followers: 1)
Geological Journal     Hybrid Journal   (Followers: 19)
Geological Magazine     Hybrid Journal   (Followers: 16)
Geology Today     Hybrid Journal   (Followers: 31)
Geology, Geophysics and Environment     Open Access   (Followers: 2)
Geomagnetism and Aeronomy     Hybrid Journal   (Followers: 3)
Geomatics, Natural Hazards and Risk     Open Access   (Followers: 13)
Geomechanics and Geophysics for Geo-Energy and Geo-Resources     Hybrid Journal  
Geomechanics for Energy and the Environment     Full-text available via subscription  
GEOmedia     Open Access   (Followers: 1)
Geomorphology     Hybrid Journal   (Followers: 33)
Geophysical & Astrophysical Fluid Dynamics     Hybrid Journal   (Followers: 8)
Geophysical Journal International     Hybrid Journal   (Followers: 40)
Geophysical Prospecting     Hybrid Journal   (Followers: 7)
Geophysics     Full-text available via subscription   (Followers: 19)
Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards     Hybrid Journal   (Followers: 8)
Geoscience Canada : Journal of the Geological Association of Canada / Geoscience Canada : journal de l'Association Géologique du Canada     Full-text available via subscription   (Followers: 6)
Geoscience Communication     Open Access  
Geoscience Data Journal     Open Access   (Followers: 5)
Geoscience Frontiers     Open Access   (Followers: 10)
Geoscience Letters     Open Access  
Geosciences     Open Access   (Followers: 3)
Geosciences Journal     Hybrid Journal   (Followers: 10)
Geoscientific Instrumentation, Methods and Data Systems     Open Access   (Followers: 2)
Geoscientific Instrumentation, Methods and Data Systems Discussions     Open Access   (Followers: 1)
Geoscientific Model Development     Open Access   (Followers: 8)
Geoscientific Model Development Discussions     Open Access  
Geostandards and Geoanalytical Research     Hybrid Journal   (Followers: 3)
Geosystem Engineering     Hybrid Journal  
Geosystems and Geoenvironment     Open Access  
Geotectonic Research     Full-text available via subscription   (Followers: 5)
Geotectonics     Hybrid Journal   (Followers: 9)
Glass Physics and Chemistry     Hybrid Journal   (Followers: 1)
Global and Planetary Change     Hybrid Journal   (Followers: 18)
Global Biogeochemical Cycles     Full-text available via subscription   (Followers: 17)
Gondwana Research     Hybrid Journal   (Followers: 10)
GPS Solutions     Hybrid Journal   (Followers: 28)
Grassland Science     Hybrid Journal  
Ground Water Monitoring & Remediation     Hybrid Journal   (Followers: 25)
Groundwater     Hybrid Journal   (Followers: 37)
Groundwater for Sustainable Development     Full-text available via subscription   (Followers: 5)
Helgoland Marine Research     Open Access   (Followers: 2)
History of Geo- and Space Sciences     Open Access   (Followers: 1)
Hydrobiologia     Hybrid Journal   (Followers: 21)
Hydrogeology Journal     Hybrid Journal   (Followers: 21)

        1 2 3 | Last

Similar Journals
Journal Cover
Geochronology (GChron)
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2628-3697 - ISSN (Online) 2628-3719
Published by Copernicus Publications Homepage  [54 journals]
  • Cyclostratigraphy of the Middle to Upper Ordovician successions of the
           Armorican Massif (western France) using portable X-ray fluorescence

    • Abstract: Cyclostratigraphy of the Middle to Upper Ordovician successions of the Armorican Massif (western France) using portable X-ray fluorescence
      Matthias Sinnesael, Alfredo Loi, Marie-Pierre Dabard, Thijs R. A. Vandenbroucke, and Philippe Claeys
      Geochronology, 4, 251–267, https://doi.org/10.5194/gchron-4-251-2022, 2022
      We used new geochemical measurements to study the expression of astronomical climate cycles recorded in the Ordovician (~ 460 million years ago) geological sections of the Crozon Peninsula (France). This type of geological archive is not often studied in this way, but as they become more important going back in time, a better understanding of their potential astronomical cycles is crucial to advance our knowledge of deep-time climate dynamics and to construct high-resolution timescales.
      PubDate: Mon, 16 May 2022 09:04:31 +020
      DOI: 10.5194/gchron-4-251-2022 2022

       
  • Technical Note: colab_zirc_dims: a Google-Colab-based Toolset for
           Automated and Semi-automated Measurement of Mineral Grains in LA-ICP-MS
           Images Using Deep Learning Models

    • Abstract: Technical Note: colab_zirc_dims: a Google-Colab-based Toolset for Automated and Semi-automated Measurement of Mineral Grains in LA-ICP-MS Images Using Deep Learning Models
      Michael C. Sitar and Ryan J. Leary
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-12,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      We developed code to automatically and semi-automatically measure dimensions of detrital mineral grains in reflected light images saved at LA-ICP-MS facilities that use Chromium targeting software. Our code uses trained deep learning models to segment grain-images with greater accuracy than is possible using other image segmentation techniques. We implement our code in user-accessible, ready-to-run Google Colab notebooks, links to which can be found at https://github.com/MCSitar/colab_zirc_dims.
      PubDate: Thu, 05 May 2022 07:42:43 +020
      DOI: 10.5194/gchron-2022-122022

       
  • A revised alpha-ejection correction calculation for (U-Th)/He
           thermochronology dates of broken apatite crystals

    • Abstract: A revised alpha-ejection correction calculation for (U-Th)/He thermochronology dates of broken apatite crystals
      John He and Peter W. Reiners
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-11,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      Apatite helium thermochronology is a method used for dating the time at which a rock (and the apatite crystals contained within) cooled below a certain temperature, by measuring radioactive parent isotopes (uranium and thorium) and daughter isotopes (helium). This paper proposes a revision to a commonly used calculation that corrects raw data to account for instances when the analyzed apatite crystals are fragmented. It demonstrates the improved accuracy and precision of the proposed revision.
      PubDate: Mon, 02 May 2022 07:42:43 +020
      DOI: 10.5194/gchron-2022-112022

       
  • Calcite U–Pb dating of altered ancient oceanic crust in the North
           Pamir, Central Asia

    • Abstract: Calcite U–Pb dating of altered ancient oceanic crust in the North Pamir, Central Asia
      Johannes Rembe, Renjie Zhou, Edward R. Sobel, Jonas Kley, Jie Chen, Jian-Xin Zhao, Yuexing Feng, and Daryl L. Howard
      Geochronology, 4, 227–250, https://doi.org/10.5194/gchron-4-227-2022, 2022
      Calcite is frequently formed during alteration processes in the basaltic, uppermost layer of juvenile oceanic crust. Weathered oceanic basalts are hard to date with conventional radiometric methods. We show in a case study from the North Pamir, Central Asia, that calcite U–Pb age data, supported by geochemistry and petrological microscopy, have potential to date sufficiently old oceanic basalts, if the time span between basalt extrusion and latest calcite precipitation (~ 25 Myr) is considered.
      PubDate: Thu, 21 Apr 2022 14:22:18 +020
      DOI: 10.5194/gchron-4-227-2022 2022

       
  • Technical note: Quantifying uranium-series disequilibrium in natural
           samples for dosimetric dating – Part 1: gamma spectrometry

    • Abstract: Technical note: Quantifying uranium-series disequilibrium in natural samples for dosimetric dating – Part 1: gamma spectrometry
      Barbara Mauz, Paul J. Nolan, and Peter G. Appleby
      Geochronology, 4, 213–225, https://doi.org/10.5194/gchron-4-213-2022, 2022
      It is of critical importance to dosimetric dating techniques that the quantity of the radiation dose is estimated accurately. Here we describe gamma spectrometry in terms of instrument, measurement procedures, and data analyses required for estimating parent nuclide activities. The description includes analytical procedures required to generate data with sufficient accuracy and precision for samples in secular equilibrium. We also outline procedures required to quantify disequilibrium.
      PubDate: Thu, 14 Apr 2022 13:13:25 +020
      DOI: 10.5194/gchron-4-213-2022 2022

       
  • Cosmogenic ages indicate no MIS 2 refugia in the Alexander Archipelago,
           Alaska

    • Abstract: Cosmogenic ages indicate no MIS 2 refugia in the Alexander Archipelago, Alaska
      Caleb K. Walcott, Jason P. Briner, James F. Baichtal, Alia J. Lesnek, and Joseph M. Licciardi
      Geochronology, 4, 191–211, https://doi.org/10.5194/gchron-4-191-2022, 2022
      We present a record of ice retreat from the northern Alexander Archipelago, Alaska. During the last ice age (~ 26 000–19 000 years ago), these islands were covered by the Cordilleran Ice Sheet. We tested whether islands were ice-free during the last ice age for human migrants moving from Asia to the Americas. We found that these islands became ice-free between ~ 15 100 years ago and ~ 16 000 years ago, and thus these islands were not suitable for human habitation during the last ice age.
      PubDate: Thu, 07 Apr 2022 10:02:26 +020
      DOI: 10.5194/gchron-4-191-2022 2022

       
  • Supergene phases from ferruginous duricrusts: non-destructive
           

    • Abstract: Supergene phases from ferruginous duricrusts: non-destructive microsampling and mineralogy prior to (U-Th)/He geochronological analysis
      Karina Patricia Prazeres Marques, Thierry Allard, Cécile Gautheron, Benoît Baptiste, Rosella Pinna-Jamme, Guillaume Morin, Ludovic Delbes, and Pablo Vidal-Torrado
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-9,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      We proposed a new non-destructive mineralogical methodology on inframilimetric grains that allows to quantify the hematite and goethite content and hematite/goethite ratio of grains prior to (U-Th)/He geochronological analysis. (U-Th)/He data performed on different aliquots with different acquisition time shows no remarkable differences in age, opening a new way to investigate the (U-Th)/He data evolution in supergene lateritic duricrusts.
      PubDate: Tue, 05 Apr 2022 14:59:49 +020
      DOI: 10.5194/gchron-2022-92022

       
  • How many grains are needed for quantifying catchment erosion from tracer
           thermochronology'

    • Abstract: How many grains are needed for quantifying catchment erosion from tracer thermochronology'
      Andrea Madella, Christoph Glotzbach, and Todd A. Ehlers
      Geochronology, 4, 177–190, https://doi.org/10.5194/gchron-4-177-2022, 2022
      Cooling ages date the time at which minerals cross a certain isotherm on the way up to Earth's surface. Such ages can be measured from bedrock material and river sand. If spatial variations in bedrock ages are known in a river catchment, the spatial distribution of erosion can be inferred from the distribution of the ages measured from the river sand grains. Here we develop a new tool to help such analyses, with particular emphasis on quantifying uncertainties due to sample size.
      PubDate: Thu, 31 Mar 2022 14:59:49 +020
      DOI: 10.5194/gchron-4-177-2022 2022

       
  • Comparison of basin-scale in situ and meteoric 10Be erosion and denudation
           rates in felsic lithologies across an elevation gradient at the George
           River, northeast Tasmania, Australia

    • Abstract: Comparison of basin-scale in situ and meteoric 10Be erosion and denudation rates in felsic lithologies across an elevation gradient at the George River, northeast Tasmania, Australia
      Leah A. VanLandingham, Eric W. Portenga, Edward C. Lefroy, Amanda H. Schmidt, Paul R. Bierman, and Alan J. Hidy
      Geochronology, 4, 153–176, https://doi.org/10.5194/gchron-4-153-2022, 2022
      This study presents erosion rates of the George River and seven of its tributaries in northeast Tasmania, Australia. These erosion rates are the first measures of landscape change over millennial timescales for Tasmania. We demonstrate that erosion is closely linked to a topographic rainfall gradient across George River. Our findings may be useful for efforts to restore ecological health to Georges Bay by determining a pre-disturbance level of erosion and sediment delivery to this estuary.
      PubDate: Tue, 29 Mar 2022 14:59:49 +020
      DOI: 10.5194/gchron-4-153-2022 2022

       
  • 230Th/U Isochron Dating of Cryogenic Cave Carbonates

    • Abstract: 230Th/U Isochron Dating of Cryogenic Cave Carbonates
      Paul Töchterle, Simon Steidle, R. Lawrence Edwards, Yuri Dublyansky, Christoph Spötl, Xianglei Li, John Gunn, and Gina E. Moseley
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-10,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      Cryogenic cave carbonates (CCCs) provide a marker for past permafrost conditions. Their formation age is determined by 230Th/U dating. However, samples can be contaminated with small amounts of 230Th at formation, which can cause inaccurate ages and requires correction. We analysed multiple CCCs and found that varying degrees of contamination can cause an apparent spread of ages, when really all samples formed within a single freezing event. A statistical correction method is presented.
      PubDate: Tue, 29 Mar 2022 14:59:49 +020
      DOI: 10.5194/gchron-2022-102022

       
  • Constraining the geothermal parameters of in situ Rb–Sr dating on
           Proterozoic shales and its subsequent applications

    • Abstract: Constraining the geothermal parameters of in situ Rb–Sr dating on Proterozoic shales and its subsequent applications
      Darwinaji Subarkah, Angus Leslie Nixon, Monica Jimenez, Alan Stephen Collins, Morgan Lee Blades, Juraj Farkaš, Sarah Gilbert, and Simon Holford
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-8,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      Advancements in technology allow for new techniques to date rocks quicker, cheaper, and with little sample preparation. A unique use of this method is to date carbon-rich siltstones and constrain when these rocks were first deposited. This approach can also time when these sequences are subsequently affected by heat or fluids after they were deposited. This is useful, as the formation of metal-bearing fluids or petroleum source rocks is commonly associated with such processes.
      PubDate: Wed, 23 Mar 2022 15:49:54 +010
      DOI: 10.5194/gchron-2022-82022

       
  • Short communication: Modeling competing effects of cooling rate, grain
           size, and radiation damage in low-temperature thermochronometers

    • Abstract: Short communication: Modeling competing effects of cooling rate, grain size, and radiation damage in low-temperature thermochronometers
      David M. Whipp, Dawn A. Kellett, Isabelle Coutand, and Richard A. Ketcham
      Geochronology, 4, 143–152, https://doi.org/10.5194/gchron-4-143-2022, 2022
      Multi-thermochronometry, in which methods such as (U-Th)/He dating of zircon and apatite and apatite fission track dating are combined, is used to reconstruct rock thermal histories. Our ability to reconstruct thermal histories and interpret the geological significance of measured ages requires modeling. Here we use forward models to explore effects of grain size and chemistry on cooling ages and closure temperatures for the (U-Th)/He decay systems in apatite and zircon.
      PubDate: Tue, 22 Mar 2022 15:49:54 +010
      DOI: 10.5194/gchron-4-143-2022 2022

       
  • Technical note: Rapid phase identification of apatite and zircon grains
           for geochronology using X-ray micro-computed tomography

    • Abstract: Technical note: Rapid phase identification of apatite and zircon grains for geochronology using X-ray micro-computed tomography
      Emily H. G. Cooperdock, Florian Hofmann, Ryley M. Collins, Anahi Carrera, Aya Takase, and Aaron J. Celestian
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-7,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      Apatite and zircon are the most widely used minerals for dating rocks, but they can be difficult to identify in crushed rock samples. Incorrect mineral identification results in wasted analytical resources and inaccurate data. We show how X-ray computed tomography can be used to rapidly and accurately distinguish apatite from zircon based on density variations, and provide non-destructive 3D grain-specific size, shape, and inclusion information for improved data quality.
      PubDate: Fri, 18 Mar 2022 10:48:33 +010
      DOI: 10.5194/gchron-2022-72022

       
  • Cosmogenic nuclide weathering biases: Corrections and potential for
           denudation and weathering rate measurements

    • Abstract: Cosmogenic nuclide weathering biases: Corrections and potential for denudation and weathering rate measurements
      Richard F. Ott, Sean F. Gallen, and Darryl E. Granger
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-5,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      Cosmogenic nuclides are a tool to quantify denudation – the total removal of mass from near the Earth's surface. Chemical weathering can introduce biases to cosmogenic nuclide based denudation rates measurements. Here, we investigate the effects of weathering on cosmogenic nuclides and develop tools to correct for this influence. Our results highlight which additional measurements are required to determine accurate denudation rates in regions where weathering is not negligable.
      PubDate: Tue, 15 Mar 2022 11:09:43 +010
      DOI: 10.5194/gchron-2022-52022

       
  • Late Holocene cryptotephra and a provisional 15 000-year Bayesian age
           model for Cascade Lake, Alaska

    • Abstract: Late Holocene cryptotephra and a provisional 15 000-year Bayesian age model for Cascade Lake, Alaska
      Lauren J. Davies, Britta J. L. Jensen, and Darrell S. Kaufman
      Geochronology, 4, 121–141, https://doi.org/10.5194/gchron-4-121-2022, 2022
      Subarctic and Arctic lake sediments provide key data to understand natural climate variability and future climate change. However, they can be difficult to date accurately and of limited use without a robust chronology. We use volcanic ash deposits from the last ~4000 BP to identify anomalously old radiocarbon ages at Cascade Lake, Alaska. A provisional ~15 000-year Bayesian age model is produced for the lake, and a new location for ash from five Late Holocene eruptions is reported.
      PubDate: Fri, 11 Mar 2022 11:09:43 +010
      DOI: 10.5194/gchron-4-121-2022 2022

       
  • An algorithm for U-Pb geochronology by secondary ion mass spectrometry

    • Abstract: An algorithm for U-Pb geochronology by secondary ion mass spectrometry
      Pieter Vermeesch
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-4,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      Secondary Ion Mass Spectrometer (SIMS) is the oldest and most sensitive analytical technique for in-situ U-Pb geochronology. This paper introduces a new algorithm for SIMS data reduction that treats the data as 'compositional data', which means that the relative abundances of 204Pb, 206Pb, 207Pb and 238Pb are processed within a tetrahedral data space or 'simplex'. The new method is implemented in an eponymous computer program that is compatible with the two dominant types of SIMS instruments.
      PubDate: Fri, 04 Mar 2022 11:03:36 +010
      DOI: 10.5194/gchron-2022-42022

       
  • Short communication: Experimental factors affecting fission-track counts
           in apatite

    • Abstract: Short communication: Experimental factors affecting fission-track counts in apatite
      Carolin Aslanian, Raymond Jonckheere, Bastian Wauschkuhn, and Lothar Ratschbacher
      Geochronology, 4, 109–119, https://doi.org/10.5194/gchron-4-109-2022, 2022
      Fission tracks are damage trails from uranium fission in minerals, whose ages and thermal histories are deduced from their number and length. A mineral is etched for observing the tracks with a microscope. We show that the etching and observation conditions affect the track count and explain it in the framework of a recent etch model. We conclude that established solutions do not secure that the ages and thermal histories inferred from track counts and measurements are accurate.
      PubDate: Wed, 23 Feb 2022 15:08:30 +010
      DOI: 10.5194/gchron-4-109-2022 2022

       
  • Potential impacts of chemical weathering on feldspar luminescence dating
           properties

    • Abstract: Potential impacts of chemical weathering on feldspar luminescence dating properties
      Melanie Bartz, Jasquelin Peña, Stéphanie Grand, and Georgina E. King
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-3,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      Chemical weathering alters the chemical composition of mineral grains, and it follows that luminescence dating signals may also be progressively modified. We artificially weathered feldspar samples under different chemical conditions to understand the effect of feldspar partial dissolution on their luminescence properties. Only minor changes were observed on luminescence dating properties, implying that chemical alteration of feldspar surfaces may not affect luminescence dating signals.
      PubDate: Mon, 21 Feb 2022 15:08:30 +010
      DOI: 10.5194/gchron-2022-32022

       
  • Cosmogenic 3He paleothermometry on post-LGM glacial bedrock within the
           central European Alps

    • Abstract: Cosmogenic 3He paleothermometry on post-LGM glacial bedrock within the central European Alps
      Natacha Gribenski, Marissa M. Tremblay, Pierre G. Valla, Greg Balco, Benny Guralnik, and David L. Shuster
      Geochronology Discuss., https//doi.org/10.5194/gchron-2022-1,2022
      Preprint under review for GChron (discussion: open, 0 comments)
      We apply quartz 3He paleothermometry along two deglaciation profiles in the European Alps to reconstruct temperature evolution since the Last Glacial Maximum. We observe a 3He thermal signal clearly colder than today in all bedrock surface samples exposed prior the Holocene. Current uncertainties in 3He diffusion kinetics do not permit to distinguish if this signal results from Late Pleistocene ambient temperature changes or from recent ground temperature variation due to permafrost degradation.
      PubDate: Wed, 09 Feb 2022 13:19:38 +010
      DOI: 10.5194/gchron-2022-12022

       
  • A 62 kyr geomagnetic palaeointensity record from the Taymyr
           Peninsula, Russian Arctic

    • Abstract: A 62 kyr geomagnetic palaeointensity record from the Taymyr Peninsula, Russian Arctic
      Stephanie Scheidt, Matthias Lenz, Ramon Egli, Dominik Brill, Martin Klug, Karl Fabian, Marlene M. Lenz, Raphael Gromig, Janet Rethemeyer, Bernd Wagner, Grigory Federov, and Martin Melles
      Geochronology, 4, 87–107, https://doi.org/10.5194/gchron-4-87-2022, 2022
      Levinson-Lessing Lake in northern central Siberia provides an exceptional opportunity to study the evolution of the Earth's magnetic field in the Arctic. This is the first study carried out at the lake that focus on the palaeomagnetic record. It presents the relative palaeointensity and palaeosecular variation of the upper 38 m of sediment core Co1401, spanning ~62 kyr. A comparable high-resolution record of this time does not exist in the Eurasian Arctic.
      PubDate: Fri, 28 Jan 2022 13:19:38 +010
      DOI: 10.5194/gchron-4-87-2022 2022

       
 
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