The Cyclostratigraphy Intercomparison Project (CIP): consistency, merits and pitfalls

0511406 - GFÚ 2020 RIV NL eng J - Journal Article
Sinnesael, M. - De Vleeschouwer, D. - Zeeden, Ch. - Batenburg, S. J. - Da Silva, A.-C. - de Winter, N. J. - Dinarès-Turell, J. - Drury, A. J. - Gambacorta, G. - Hilgen, F. J. - Hinnov, L. A. - Hudson, A. J. L. - Kemp, D. B. - Lantink, M. L. - Laurin, Jiří - Li, M. - Liebrand, D. - Ma, C. - Meyers, S. R. - Monkenbusch, M. - Montanari, A. - Nohl, T. - Pälike, H. - Pas, D. - Ruhl, M. - Thibault, N. - Vahlenkamp, M. - Valero, L. - Wouters, S. - Wu, H. - Claeys, P.
The Cyclostratigraphy Intercomparison Project (CIP): consistency, merits and pitfalls.
Earth-Science Reviews. Roč. 199, December (2019), č. článku 102965. ISSN 0012-8252. E-ISSN 1872-6828
Institutional support: RVO:67985530
Keywords : Milankovitch cycles * paleoclimate * astrochronology
OECD category: Geology
Impact factor: 9.724, year: 2019
Method of publishing: Open access
https://www.sciencedirect.com/science/article/pii/S0012825219304179?via%3Dihub

Cyclostratigraphy is an important tool for understanding astronomical climate forcing and reading geological time in sedimentary sequences, provided that an imprint of insolation variations caused by Earth's orbital eccentricity, obliquity and/or precession is preserved (Milankovitch forcing). We developed the Cyclostratigraphy Intercomparison Project (CIP) to assess the robustness of cyclostratigraphic methods using an experimental design of three artificial cyclostratigraphic case studies with known input parameters. Each case study is designed to address specific challenges that are relevant to cyclostratigraphy. Case 1 represents an offshore research vessel environment, as only a drill-core photo and the approximate position of a late Miocene stage boundary are available for analysis. In Case 2, the Pleistocene proxy record displays clear nonlinear cyclical patterns and the interpretation is complicated by the presence of a hiatus. Case 3 represents a Late Devonian proxy record with a low signal-to-noise ratio with no specific theoretical astronomical solution available for this age. However, in all three cases, the median solution of all submitted analyses accurately approached the correct result and several participants obtained the exact correct answers. This experiment demonstrates that cyclostratigraphy is a powerful tool for deciphering time in sedimentary successions and, importantly, that it is a trainable skill. Finally, we emphasize the importance of an integrated stratigraphic approach and provide flexible guidelines on what good practices in cyclostratigraphy should include. Our case studies provide valuable insight into current common practices in cyclostratigraphy, their potential merits and pitfalls. Our work does not provide a quantitative measure of reliability and uncertainty of cyclostratigraphy, but rather constitutes a starting point for further discussions on how to move the maturing field of cyclostratigraphy forward.
Permanent Link: http://hdl.handle.net/11104/0301685