PetroChron Antarctica: A Geological Database for Interdisciplinary Use
Abstract We present PetroChron Antarctica, a new relational database including petrological, geochemical and geochronological data sets along with computed rock properties from geological samples across Antarctica. The database contains whole‐rock geochemistry with major/trace element and isotope an...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-12-01
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| Series: | Geochemistry, Geophysics, Geosystems |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2021GC010154 |
| _version_ | 1797637948299018240 |
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| author | G. Sanchez J. A. Halpin M. Gard D. Hasterok T. Stål T. Raimondo S. Peters A. Burton‐Johnson |
| author_facet | G. Sanchez J. A. Halpin M. Gard D. Hasterok T. Stål T. Raimondo S. Peters A. Burton‐Johnson |
| author_sort | G. Sanchez |
| collection | DOAJ |
| description | Abstract We present PetroChron Antarctica, a new relational database including petrological, geochemical and geochronological data sets along with computed rock properties from geological samples across Antarctica. The database contains whole‐rock geochemistry with major/trace element and isotope analyses, geochronology from multiple isotopic systems and minerals for given samples, as well as an internally consistent rock classification based on chemical analysis and derived rock properties (i.e., chemical indices, density, p‐velocity, and heat production). A broad range of meta‐information such as geographic location, petrology, mineralogy, age statistics and significance are also included and can be used to filter and assess the quality of the data. Currently, the database contains 11,559 entries representing 10,056 unique samples with varying amounts of geochemical and geochronological data. The distribution of rock types is dominated by mafic (36%) and felsic (33%) compositions, followed by intermediate (22%) and ultramafic (9%) compositions. Maps of age distribution and isotopic composition highlight major episodes of tectonic and thermal activity that define well known crustal heterogeneities across the continent, with the oldest rocks preserved in East Antarctica and more juvenile lithosphere characterizing West Antarctica. PetroChron Antarctica allows spatial and temporal variations in geology to be explored at the continental scale and integrated with other Earth‐cryosphere‐biosphere‐ocean data sets. As such, it provides a powerful resource ready for diverse applications including plate tectonic reconstructions, geological/geophysical maps, geothermal heat flow models, lithospheric and glacial isostasy, geomorphology, ice sheet reconstructions, biodiversity evolution, and oceanography. |
| first_indexed | 2024-03-11T12:56:31Z |
| format | Article |
| id | doaj.art-722f701c93204fe1adb80641116b0be2 |
| institution | Directory Open Access Journal |
| issn | 1525-2027 |
| language | English |
| last_indexed | 2024-03-11T12:56:31Z |
| publishDate | 2021-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geochemistry, Geophysics, Geosystems |
| spelling | doaj.art-722f701c93204fe1adb80641116b0be22023-11-03T17:00:43ZengWileyGeochemistry, Geophysics, Geosystems1525-20272021-12-012212n/an/a10.1029/2021GC010154PetroChron Antarctica: A Geological Database for Interdisciplinary UseG. Sanchez0J. A. Halpin1M. Gard2D. Hasterok3T. Stål4T. Raimondo5S. Peters6A. Burton‐Johnson7Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS AustraliaInstitute for Marine and Antarctic Studies University of Tasmania Hobart TAS AustraliaGeoscience Australia Canberra ACT AustraliaDepartment of Earth Sciences University of Adelaide Adelaide SA AustraliaInstitute for Marine and Antarctic Studies University of Tasmania Hobart TAS AustraliaUniSA STEM University of South Australia Adelaide SA AustraliaUniSA STEM University of South Australia Adelaide SA AustraliaBritish Antarctic Survey Cambridge UKAbstract We present PetroChron Antarctica, a new relational database including petrological, geochemical and geochronological data sets along with computed rock properties from geological samples across Antarctica. The database contains whole‐rock geochemistry with major/trace element and isotope analyses, geochronology from multiple isotopic systems and minerals for given samples, as well as an internally consistent rock classification based on chemical analysis and derived rock properties (i.e., chemical indices, density, p‐velocity, and heat production). A broad range of meta‐information such as geographic location, petrology, mineralogy, age statistics and significance are also included and can be used to filter and assess the quality of the data. Currently, the database contains 11,559 entries representing 10,056 unique samples with varying amounts of geochemical and geochronological data. The distribution of rock types is dominated by mafic (36%) and felsic (33%) compositions, followed by intermediate (22%) and ultramafic (9%) compositions. Maps of age distribution and isotopic composition highlight major episodes of tectonic and thermal activity that define well known crustal heterogeneities across the continent, with the oldest rocks preserved in East Antarctica and more juvenile lithosphere characterizing West Antarctica. PetroChron Antarctica allows spatial and temporal variations in geology to be explored at the continental scale and integrated with other Earth‐cryosphere‐biosphere‐ocean data sets. As such, it provides a powerful resource ready for diverse applications including plate tectonic reconstructions, geological/geophysical maps, geothermal heat flow models, lithospheric and glacial isostasy, geomorphology, ice sheet reconstructions, biodiversity evolution, and oceanography.https://doi.org/10.1029/2021GC010154Antarcticageochronologygeochemistrypetrologyrelational database |
| spellingShingle | G. Sanchez J. A. Halpin M. Gard D. Hasterok T. Stål T. Raimondo S. Peters A. Burton‐Johnson PetroChron Antarctica: A Geological Database for Interdisciplinary Use Geochemistry, Geophysics, Geosystems Antarctica geochronology geochemistry petrology relational database |
| title | PetroChron Antarctica: A Geological Database for Interdisciplinary Use |
| title_full | PetroChron Antarctica: A Geological Database for Interdisciplinary Use |
| title_fullStr | PetroChron Antarctica: A Geological Database for Interdisciplinary Use |
| title_full_unstemmed | PetroChron Antarctica: A Geological Database for Interdisciplinary Use |
| title_short | PetroChron Antarctica: A Geological Database for Interdisciplinary Use |
| title_sort | petrochron antarctica a geological database for interdisciplinary use |
| topic | Antarctica geochronology geochemistry petrology relational database |
| url | https://doi.org/10.1029/2021GC010154 |
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