2026-05-07T22:21:35Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/61092022-12-19T09:49:15Zcom_10259.4_2560com_10259_5086com_10259_2604col_10259.4_2561
Calvín Ballester, Pablo
91
600
0000-0002-4485-2139
Pueyo Morer, Emilio L.
c0d89dff-16e9-42d2-bbd4-15419f74c32c
600
Ramón Ortiga, Mª José
98b1e9de-91a1-4e37-b4b6-b9d15f9ea581
600
Casas Sainz, Antonio M.
8c24b5eb-a5a3-48cc-bb80-60d9063c2366
600
Villalaín Santamaria, Juan José
576
600
0000-0001-9948-0953
2021-11-05T09:14:38Z
2021-11-05T09:14:38Z
2020-08
0956-540X
http://hdl.handle.net/10259/6109
10.1093/gji/ggaa217
The Small Circle (SC) tools analyse the stereographic tracks (small circles) followed by the
palaeomagnetic vectors during folding processes. Working with interfolding and synfolding
remagnetizations, the Small Circle Intersection (SCI) method allows finding the best solution
of grouping that should correspond with the remagnetization direction. Once this is known,
it is possible to determine the magnetization age as well as the degree of bed tilting at this
moment. The SC tools are based on some assumptions, among which the coaxiality between
the different deformation events is the one addressed in this work (i.e. absence of vertical
axis rotations, VARs, or differential horizontal axis rotations, dHARs). This assumption is
based on the necessity of knowing the rotation axis for folding after the acquisition of the
remagnetization, and SC tools consider the bedding strike as this axis, something that is
only accomplished under coaxial folding. In order to explore how non-coaxiality affects the
solutions derived from the SC methods, we first (i) identify the variables that control these
errors through simple models that only consider two theoretical palaeomagnetic sites, after
that it is possible (ii) to derive the mathematical relationships between them. Finally, we (iii)
simulate errors derived from the use of SC tools using a population of 30 palaeomagnetic sites
recreating different possible scenarios with VARs and dHARs in nature.
Research financed by the projects
DR3AM- CGL2014-55118 and CGL2016-77560-C2 from the
Spanish Ministry of Science (MINECO) and by the Applied Geology
(GeoAP-E0117R) and Geotransfer groups of the Government
of Aragon, as well as by the project BU235P18 (Junta de
Castilla y Leon, Spain) and the European Regional Development
Fund (ERD). It has also benefited from the MAGIBER-II network
(CGL2017-90632-REDT) funded by the Ministry of Science, Innovation
and Universities.
application/pdf
eng
Oxford University Press
Geophysical Journal International. 2020, V. 222, n. 2, p. 940–955
https://doi.org/10.1093/gji/ggaa217
info:eu-repo/grantAgreement/MINECO//CGL2014-55118
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-77560-C2-1-P/ES/La remagnetización cretacica del alto Atlas Central como herramienta de reconstrucción geométrica de la estructura Pre-cenozoica
info:eu-repo/grantAgreement/Junta de Castilla y León//BU235P18//Análisis arqueomagnéticos en materiales arqueológicos quemados de edad holocena y pleistocena
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2017-90632-REDT
Palaeomagnetism
Remagnetization
Magnetismo
Geología
Magnetism
Geology
Analysing non-coaxial folding effects in the Small Circle Intersection method
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/openAccess
THUMBNAIL
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https://riubu.ubu.es/bitstream/10259/6109/2/license.txt
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ORIGINAL
Calvin-gji_2020.pdf
Calvin-gji_2020.pdf
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https://riubu.ubu.es/bitstream/10259/6109/1/Calvin-gji_2020.pdf
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10259/6109
oai:riubu.ubu.es:10259/6109
2022-12-19 10:49:15.101
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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