气候变化领域集成服务门户(CCPortal): Role of transverse structures in paleoseismicity and drainage rearrangement in rift systems: the case of the Valdecebro fault zone (Teruel graben; eastern Spain)

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DOI	10.1007/s00531-019-01707-9
	Role of transverse structures in paleoseismicity and drainage rearrangement in rift systems: the case of the Valdecebro fault zone (Teruel graben; eastern Spain)
	Simón J.L.; Ezquerro L.; Arlegui L.E.; Liesa C.L.; Luzón A.; Medialdea A.; García A.; Zarazaga D.
发表日期	2019
ISSN	14373254
起始页码	1429
结束页码	1449
卷号	108 期号:5
英文摘要	The E–W trending, nearly pure extensional Valdecebro fault zone is a transverse structure at the central sector of the N–S Teruel graben. It was activated by the Late Ruscinian (Early Pliocene, ca. 3.7 Ma), giving rise to structural rearrangement of the graben margin. Until the Late Pleistocene, it has accommodated a net slip ca. 205 m, with slip rate of 0.055 mm/a. Paleoseismicity has been analysed in a 29-m-long, 5-m-deep trench excavated through a fault branch that offsets a Pleistocene pediment surface. The paleoseismic succession includes a minimum of 6–7 events occurred since ca. 142 ka BP, although a model with 12 events could be more realistic. The following paleoseismic parameters have been inferred, assuming a minimum of 6 and a maximum of 12 events: average coseismic slip = 58–117 cm; recurrence period = 8.4–28.4 ka; potential moment magnitude Mw = 5.8–5.9. The recorded displacement since ca. 142 ka BP totalizes 7.0 m, with slip rate of 0.05–0.07 mm/a. Slip on the transverse Valdecebro fault zone has critically contributed to bulk deformation under a prevailing ‘multidirectional’ extensional regime. Drainage patterns have been rearranged, recurrently switching between westward and southward directions as a consequence of diverse slip episodes at the Valdecebro fault zone (E–W) and the neighbouring La Hita (N–S) and Concud (NW–SE) faults. The ultimate westward drainage of the Valdecebro depression incised and dismantled a southward-sloping Pleistocene pediment sourced at the Valdecebro mountain front, representing a capture by the Alfambra river occurred between 124 and 22 ka BP. © 2019, Geologische Vereinigung e.V. (GV).
英文关键词	Active fault; Biaxial extension; Drainage capture; OSL dating; Paleoearthquake
语种	英语
scopus关键词	active fault; drainage; earthquake event; fault zone; graben; luminescence dating; paleoseismicity; Pliocene; rifting; Aragon; Spain; Teruel [Aragon]
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147825
作者单位	Departamento de Ciencias de la Tierra & Instituto de Ciencias Ambientales (IUCA), Facultad de Ciencias, Universidad de Zaragoza, Pedro Cerbuna 12, Saragossa, 50009, Spain; Geographisches Institut, Universität zu Köln, Otto-Fischer-Str. 4, Cologne, 50674, Germany; CTA, Consultores Técnicos Asociados S.A, C/Fray Luis Amigó 8, Saragossa, 50009, Spain; C/Julio García Condoy, 36, 1 B, Saragossa, 50018, Spain
推荐引用方式 GB/T 7714	Simón J.L.,Ezquerro L.,Arlegui L.E.,et al. Role of transverse structures in paleoseismicity and drainage rearrangement in rift systems: the case of the Valdecebro fault zone (Teruel graben; eastern Spain)[J],2019,108(5).
APA	Simón J.L..,Ezquerro L..,Arlegui L.E..,Liesa C.L..,Luzón A..,...&Zarazaga D..(2019).Role of transverse structures in paleoseismicity and drainage rearrangement in rift systems: the case of the Valdecebro fault zone (Teruel graben; eastern Spain).International Journal of Earth Sciences,108(5).
MLA	Simón J.L.,et al."Role of transverse structures in paleoseismicity and drainage rearrangement in rift systems: the case of the Valdecebro fault zone (Teruel graben; eastern Spain)".International Journal of Earth Sciences 108.5(2019).