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pyrolite: Python for geochemistry

Morgan Williams, Louise Schoneveld, Yajing Mao, Jens Klump, Justin Gosses, Hayden Dalton, Adam Bath, Steve Barnes
2020 Journal of Open Source Software  
Acknowledgements The authors of this publication (listed in reverse alphabetical order) have all contributed to the development of pyrolite at an early stage.  ...  pyrolite is a Python package for working with multivariate geochemical data, with a particular focus on rock and mineral chemistry.  ...  Community pyrolite aims to be designed, developed and supported by the geochemistry community.  ... 
doi:10.21105/joss.02314 fatcat:sfo2zg4dznf4xj2jmusb3357py

HyMaTZ: A Python Program for Modeling Seismic Velocities in Hydrous Regions of the Mantle Transition Zone

Fei Wang, Mitchell Barklage, Xiaoting Lou, Suzan van der Lee, Craig R. Bina, Steven D. Jacobsen
2018 Geochemistry Geophysics Geosystems  
HyMaTZ (Hydrous Mantle Transition Zone) is a Python program with graphical user interface, which calculates and displays seismic velocities for different scenarios of hydration in the MTZ for comparison  ...  For wadsleyite, adding 1.65 wt% H 2 O or increasing the iron content by 7 mol% leads to roughly equivalent reductions in V S as raising the temperature by 160 K with a pyrolite model in the upper part  ...  The three water content profiles in (Mg,Fe) 2 SiO 4 phases of a pyrolite model show the effect of water: blue, maximum water; green, intermediate water; and red, dry pyrolite. 10.1029/2018GC007464 Geochemistry  ... 
doi:10.1029/2018gc007464 fatcat:3oqxq5y4qzgn3dc6ig7f6ckgm4

BurnMan: A lower mantle mineral physics toolkit

Sanne Cottaar, Timo Heister, Ian Rose, Cayman Unterborn
2014 Geochemistry Geophysics Geosystems  
The toolbox, written in Python, can be used to evaluate seismic velocities of new mineral physics data or geodynamic models, and as the forward model in inversions for mantle composition.  ...  However, we find that, within mineral physical uncertainties, a pyrolitic composition can match PREM very well.  ...  CIDER also funded a followup meeting for this project. We thank all the fellow member of the  ... 
doi:10.1002/2013gc005122 fatcat:6rzsyjkbazhpflzwillgjl4mte

London 2021 GAC–MAC Joint Annual Meeting Workshops and Short Courses

Roberta L. Flemming
2020 Geoscience Canada  
building, and simulation in the geosciences traditionally rely on software tools like GIS, mining and geophysical visualization packages, custom code in environments like MATLAB, and custom tools created for  ...  after all have to be able to represent 3-D environments and simulate phenomena such as smoke, fire, and explosions to be engagingresearchers have begun to apply these engines as general-purpose platforms for  ...  These tutorials will use a diverse range of software, including free machine learning software (KNIME), a Python package for geochemical data analysis (Pyrolite) and CSIRO-developed multiscale wavelet  ... 
doi:10.12789/geocanj.2020.47.168 fatcat:34adgkppqbgtxe7na4qev4vehe

LitMod2D_2.0: An improved integrated geophysical‐petrological modeling tool for the physical interpretation of upper mantle anomalies

Ajay Kumar, Manel Fernàndez, Ivone Jimenez‐Munt, Montserrat Torne, Jaume Vergés, Juan Carlos Afonso
2020 Geochemistry Geophysics Geosystems  
.  Post-processing tool-box for tailored processing of the output.  ...  Connolly, J., et al. (2013a). 3-D multiobservable probabilistic inversion for the compositional and thermal structure of the lithosphere and upper mantle.  ...  PUM-3%_N_MORB exhibits variations in between those associated with DMM and pyrolite.  ... 
doi:10.1029/2019gc008777 fatcat:7srkzh2mebcyrkqfjyaxbo7mra

Precalculated phase equilibrium models for geophysical properties of the crust and mantle as a function of composition

A. Zunino, J. A. D. Connolly, A. Khan
2011 Geochemistry Geophysics Geosystems  
The tables for both examples are provided electronically as ready-touse geophysical tools.  ...  We document a computer program that can be used to assemble a three-dimensional table that accounts for compositional variations from such two-dimensional tables.  ...  Maclennan, and an anonymous reviewer for helpful reviews. This work was supported by Swiss National Research Foundation grants 200021-130411/1 and 200021-130411.  ... 
doi:10.1029/2010gc003304 fatcat:bwhdmv5g3bem7c3pptiy4m5xqy

Coupled dynamics and evolution of primordial and recycled heterogeneity in Earth's lower mantle

Anna Johanna Pia Gülcher, Maxim Dionys Ballmer, Paul James Tackley
2021 Solid Earth  
Based on our results, we propose an integrated style of mantle heterogeneity for the Earth involving the preservation of primordial domains along with recycled piles.  ...  This style has important implications for early Earth evolution and has the potential to reconcile geophysical and geochemical discrepancies on present-day lower-mantle heterogeneity.  ...  Finally, the open-source Python module StagPy (https://stagpy.readthedocs.io/en/stable/, last access: 17 July 2021) was used for post-processing of the numerical data and production of Fig. 8 .  ... 
doi:10.5194/se-12-2087-2021 fatcat:rox3jlf3znhtrl7mpt3rabcimm

Machine learning for geochemical exploration: classifying metallogenic fertility in arc magmas and insights into porphyry copper deposit formation

Chetan L. Nathwani, Jamie J. Wilkinson, George Fry, Robin N. Armstrong, Daniel J. Smith, Christian Ihlenfeld
2022 Mineralium Deposita  
This yields 81–83% accuracy for all classifiers, and receiver operating characteristic (ROC) curves have mean area under curve (AUC) scores of 87–89% indicating the probability of ranking a 'fertile' rock  ...  supervised machine learning algorithms: logistic regression, support vector machines, artificial neural networks (ANN) and Random Forest to classify metallogenic 'fertility' in arc magmas based on whole-rock geochemistry  ...  We thank Matt Loader for the assistance with data compilation.  ... 
doi:10.1007/s00126-021-01086-9 fatcat:t2tkxzco6vckvgqjcqagzqeggm

Iron Isotopes Reveal a Benthic Iron Shuttle in the Palaeoproterozoic Zaonega Formation: Basinal Restriction, Euxinia, and the Effect on Global Palaeoredox Proxies

Kaarel Mänd, Stefan V. Lalonde, Kärt Paiste, Marie Thoby, Kaarel Lumiste, Leslie J. Robbins, Timmu Kreitsmann, Alexander E. Romashkin, Kalle Kirsimäe, Aivo Lepland, Kurt O. Konhauser
2021 Minerals  
Liorzou for help with trace element and Fe isotope analyses.  ...  Data analysis and visualisation employed the pandas [89] , pyrolite [90] , matplotlib [91] , mpltern [92] , and seaborn [93] packages for the Python programming language.  ...  Due to its redox sensitivity and importance to microbial processes, Fe geochemistry is a powerful proxy for water column redox structure, sediment biogeochemistry, and basinal configuration [32] [33]  ... 
doi:10.3390/min11040368 fatcat:6haoznilpvclzdkww2sxmmu6za

Lateral Mixing Processes in the Hadean

C. J. O'Neill, S. Zhang
2018 Journal of Geophysical Research - Solid Earth  
They also imply that such geochemical signatures are primordial and that lateral differences in the geochemistry of the mantle existed early in Earth's history.  ...  We thank two anonymous reviewers for extremely constructive comments. Simulations performed using the community code Aspect, which can be downloaded from aspect.dealii.org.  ...  We employed the scikit-learn python library to implement this method.  ... 
doi:10.1029/2018jb015698 fatcat:qpfx2xdiynfozny43emb6jgkze

Rare earth mineral diversity controlled by REE pattern shapes

Michael Anenburg
2020 Mineralogical magazine  
"key.pdf" -colour wheel for REE used in this study. 2. "oneill.xlsx" -spreadsheet used to derive λ values and fits used in figure 7a. 3.  ...  Positive Eu anomalies only need to be moderate in minerals depleted in the light REE for Eu to be the dominant REE, thus identifying candidate rocks in which the first Eu dominant mineral might be found  ...  "pyrolite" (Williams et al., 2020) .  ... 
doi:10.1180/mgm.2020.70 fatcat:s5ky76fmtzhndg3hp4hdalkxa4

The Assessment of Organic Matter Young's Modulus Distribution with Depositional Environment and Maturity

T. Fender, C. Land, M. Rouainia, S. Graham, D. M. Jones, C. H. Vane, T. Wagner
2020 Journal of Geophysical Research - Solid Earth  
One key property is elasticity (Young's modulus), which is relatively well constrained for each component of a shale, except for the organic matter.  ...  Plain Language Summary Gas recovery from hydraulic fracturing and validating the top-seal integrity for carbon capture and storage require knowledge of key mechanical properties of the associate mudrock  ...  Upon filtering the Young's modulus data of each scan and each shale, the results were visualized as a Kernel Density Estimate (KDE) plot in order to identify trends using the GetDist package for Python  ... 
doi:10.1029/2020jb020435 fatcat:hrknf6jweffdvhbxhmql7rddz4

Late-Cretaceous construction of the mantle lithosphere beneath the central California coast revealed by Crystal Knob xenoliths

D. P Quinn, J. B. Saleeby, M. Ducea, P. Luffi, P. Asimow
2018 Geochemistry Geophysics Geosystems  
This rare direct record of the temperature of the upper mantle allows us to test several options for the formation of theunder pinnings of the central California coast.  ...  We test the Crystal Knob temperature depth array against model geotherms matching potential sources for the mantle lithosphere beneath the Coast Ranges: (A) a shallow Mendocino slab window, (B) a young  ...  Nadin, and one anonymous reviewer for their excellent feedback, which greatly improved this contribution.  ... 
doi:10.1029/2017gc007260 fatcat:qczzrlb72vevxccfnlo5chfdmq

At the precipice of the Great Oxygen Crash: Redox-sensitive metal geochemistry in the Paleoproterozoic Onega Basin

Kaarel Mand
2021
These chapters constitute independent journal articles on the metal geochemistry of the Onega Basin, one of which has already been published and two of which are in the final stages of revision prior to  ...  global redox conditions, and explore their implications for the mechanisms governing global carbon and oxygen cycle shifts, and the emergence of eukaryotic life forms.  ...  ., and Barnes, S. (2020) Pyrolite: Python for geochemistry. Journal of Open Source Software, 5, 2314.  ... 
doi:10.7939/r3-8tde-s562 fatcat:bikbpongjncjnmsjo5vtkhkdcm

A Proterozoic boundary in southern Norway revealed by joint-inversion of P-receiver functions and surface waves

Marianne L. Kolstrup, Valérie Maupin
2013 Precambrian Research  
Change, Python/Matplotlib tool for measuring teleseismic arrival times, 24(3-4), 165–173. Seismol. Res. Lett., 84(1), 85–93.  ...  Tectonophysics 602:38– Lou X, van der Lee S, Lloyd S (2013) AIMBAT: A 54 Python/Matplotlib tool for measuring teleseismic ar- Weidle C, Maupin V, Ritter J, Kvarna T, Schweitzer  ... 
doi:10.1016/j.precamres.2013.10.004 fatcat:cgeywo5icvhufotgzrkflnqgxq
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