Powiadomienia systemowe
- Sesja wygasła!
- Sesja wygasła!
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Konferencja
International Congress on the Jurassic System (7 ; 06-18.09.2006 ; Kraków, Poland]
Języki publikacji
Abstrakty
A joint project of the International Commission on Stratigraphy (ICS) and CHRONOS database program is to provide detailed global and regional “reference” scales of Earth history. Such scales integrate biostratigraphy (zones, datums for marine and terrestrial realms), sea-level (curves, sequences), geochemistry (trends, events), magnetic polarity chrons and astronomical cycles. These summarize our current consensus on the inter-calibration of events, their relationships to international divisions of geologic time and their estimated numerical ages. An initial Phanerozoic database (about 9000 events and zones in April 2006) includes definitions of geologic stages, major zonations and markers of all significant fossil groups, primary and secondary magnetic polarity scales, and other stratigraphic information. Annotations on each entry include source, reliability, selected taxonomic notes, inter-calibrations, and methods of interpolating numerical age. This database will be enhanced through the efforts of the subcommissions of the ICS and other stratigraphic and regional experts. A primary source for the Jurassic was the extensive “Mesozoic and Cenozoic Sequence Chronostratigraphic Framework of European Basins” chart series of inter-calibrated bio-, magneto-, chemoand sequence stratigraphy (Hardenbol et al. 1998) which had been calibrated to the geologic time scales of 1995. We recalibrated all these chronostratigraphic and sequence stratigraphy events to Geologic Time Scale 2004 (Gradstein et al. 2004) and included selected post-1995 biostratigraphic schemes, marker events and geochemistry correlated to Tethyan and Boreal ammonite zones. On-screen display and production of user-tailored time-scale charts is provided by the Time-Scale Creator, a JAVA package available from the ICS/CHRONOS websites (www.stratigraphy.org or www.chronos.org). After specifying the time interval and vertical scale, a user selects a subset of stratigraphic columns and trends. In addition to screen views and a scalable-vector graphics (SVG) file for importation into popular graphics programs (e.g., Adobe Illustrator), the on-screen display has “hot-curser-points” to open windows providing additional information on events, zones and boundaries. The database and visualization package are envisioned as a convenient reference tool, chart-production assistant, and a window into the geologic history of our planet. We present sample output for the Jurassic portion as a pair of large-format charts: Hettangian-Aalenian by Ogg and Przybylski, and an accompanying poster for Bajocian-Tithonian by Przybylski and Ogg.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
199--199
Opis fizyczny
Bibliogr. 2 poz.
Twórcy
autor
autor
- Department of Earth and Atmospheric Sciences, Purdue University, 550 Stadium Mall Dr, W. Lafayette, IN 47907 USA, jogg@purdue.edu
Bibliografia
- Gradstein F. M., Ogg J. G. and Smith A. G. (coordinators), with 36 contributors. 2004. Geologic time scale 2004. Cambridge University Press, 1-598.
- Hardenbol J., Thierry J., Farley M. B., Jacquin Th., de Graciansky P.-C. and Vail P. R. (with numerous contributors). 1998. Mesozoic and Cenozoic sequence chronostratigraphic framework of European basins. In: de Graciansky P.-C., Hardenbol J., Jacquin Th. and Vail P. R. (Eds), Mesozoic-Cenozoic sequence stratigraphy of European basins. SEPM Special Publication, Tulsa, 60: 3-13, 763-781, and chart supplements.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL9-0068-0053