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Basement dykes in Panafrican crust, Sinai Peninsula

Tectonic waters

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Generate UUIDs in ArcGIS Pro

The corporate GIS vehicle is ESRI's ArcGIS Pro. When digitizing new features which are to be used in GPlates, each feature is required to have a UUID-based FEATURE_ID in the form of GPlates-7344d973-6ff1-47f7-93b9-bdb9cf7197ee. In ArcGIS Pro, this can be done easily using the field calculator. The following definition (based on ESRI's website) can be plonked into the Code Block part of the Field Calculator:

def ID():
  import uuid
  return 'GPlates-' + str(uuid.uuid4())

while in the field assignment (FEATURE_ID =) one then simply uses the above definition, assigning FIELD_ID = ID()

2021/01/26 07:11 · christian · 0 Comments

Paper on Neuquen Basin

lead by my colleague Daniel Minisini, we have just published a paper on the “Sedimentology, Depositional Model, and Implications for Reservoir Quality” of the Vaca Muerta Unconventional Play in the Neuquen Basin in Argentina. The paper is a chapter in AAPG Memoir 121 "Integrated geology of unconventionals: The case of the Vaca Muerta play, Argentina", edited by Daniel Minisini, Manuel Fantín, Iván Lanusse Noguera, and Héctor A. Leanza,

2020/12/10 18:31 · christian · 0 Comments

South Atlantic Keynote at AAPG

I was honoured to present an opening keynote talk at AAPG's South Atlantic Basins Virtual Research Symposium: Offshore Basins of Argentina, Brazil and Uruguay: the Next Exploration Frontier on South Atlantic Rift dynamics: Insights from plate models, observations and numerical models.

2020/12/05 18:55 · christian · 0 Comments

Subduction volume paper published

Madison East's paper on subduction volume fluxes over the past 230 Ma is finally published in Gondwana Research.

The supplementary material is available on Zenodo.org. The plate reconstruction model and related digital age grids which were used for the calculations are available for download at the EarthByte FTP site.

2020/03/30 20:40 · christian · 0 Comments

New paper on plate tectonics and ecology

Led by Giulia Donati, we have published a new paper which investigates the link between plate tectonics and habitat dynamics. The paper “A process‐based model supports an association between dispersal and the prevalence of species traits in tropical reef fish assemblages” is now available in early view as open access in Ecography.

Abstract:

Habitat dynamics interacting with species dispersal abilities could generate gradients in species diversity and prevalence of species traits when the latter are associated with species dispersal potential. Using a process‐based model of diversification constrained by a dispersal parameter, we simulated the interplay between reef habitat dynamics during the past 140 million years and dispersal, shaping lineage diversification history and assemblage composition globally. The emerging patterns from the simulations were compared to current prevalence of species traits related to dispersal for 6315 tropical reef fish species. We found a significant spatial congruence between the prevalence of simulated low dispersal values and areas with a large proportion of species characterized by small adult body size, narrow home range mobility behaviour, pelagic larval duration shorter than 21 days and diurnal activity. Species characterized by such traits were found predominantly in the Indo‐Australian Archipelago and the Caribbean Sea. Furthermore, the frequency distribution of the dispersal parameter was found to match empirical distributions for body size, PLD and home range mobility behaviour. Also, the dispersal parameter in the simulations was associated to diversification rates and resulted in trait frequency matching empirical distributions. Overall, our findings suggest that past habitat dynamics, in conjunction with dispersal processes, influenced diversification in tropical reef fishes, which may explain the present‐day geography of species traits.

2019/09/26 14:26 · christian · 0 Comments

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