Cristin-resultat-ID: 1834353
Sist endret: 25. november 2020, 13:26
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

A tracer-based algorithm for automatic generation of seafloor age grids from plate tectonic reconstructions

Bidragsytere:
  • Krister Stræte Karlsen
  • Mathew Domeier
  • Carmen Gaina og
  • Clinton Phillips Conrad

Tidsskrift

Computers & Geosciences
ISSN 0098-3004
e-ISSN 1873-7803
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Volum: 140
Artikkelnummer: 104508
Open Access

Importkilder

Scopus-ID: 2-s2.0-85083876084

Beskrivelse Beskrivelse

Tittel

A tracer-based algorithm for automatic generation of seafloor age grids from plate tectonic reconstructions

Sammendrag

The age of the ocean floor and its time-dependent age distribution control fundamental features of the Earth, such as bathymetry, sea level and mantle heat loss. Recently, the development of increasingly sophisticated reconstructions of past plate motions has provided models for plate kinematics and plate boundary evolution back in geological time. These models implicitly include the information necessary to determine the age of ocean floor that has since been lost to subduction. However, due to the lack of an automated and efficient method for generating global seafloor age grids, many tectonic models, most notably those extending back into the Paleozoic, are published without an accompanying set of age models for oceanic lithosphere. Here we present an automatic, tracer-based algorithm that generates seafloor age grids from global plate tectonic reconstructions with defined plate boundaries. Our method enables us to produce novel seafloor age models for the Paleozoic’s lost ocean basins. Estimated changes in sea level based on bathymetry inferred from our new age grids show good agreement with sea level record estimations from proxies, providing a possible explanation for the peak in sea level during the assembly phase of Pangea. This demonstrates how our seafloor age models can be directly compared with observables from the geologic record that extend further back in time than the constraints from preserved seafloor. Thus, our new algorithm may also aid the further development of plate tectonic reconstructions by strengthening the links between geological observations and tectonic reconstructions of deeper time.

Bidragsytere

Krister Stræte Karlsen

  • Tilknyttet:
    Forfatter
    ved Senter for Jordens utvikling og dynamikk ved Universitetet i Oslo

Mathew Michael Domeier

Bidragsyterens navn vises på dette resultatet som Mathew Domeier
  • Tilknyttet:
    Forfatter
    ved Senter for Jordens utvikling og dynamikk ved Universitetet i Oslo

Carmen Gaina

  • Tilknyttet:
    Forfatter
    ved Senter for Jordens utvikling og dynamikk ved Universitetet i Oslo

Clinton Phillips Conrad

  • Tilknyttet:
    Forfatter
    ved Senter for Jordens utvikling og dynamikk ved Universitetet i Oslo
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