Geometrical and textural characteristics of earthquake-induced disturbances in Quaternary glacio-lacustrine sediments ('Argiles du Trieves Alps, France)

被引：20

作者：

Lignier, V ^{[1
]}

Beck, C ^{[1
]}

Chapron, E ^{[1
]}

机构：

[1] Univ Savoie, Lab Geodynam Chaines Alpines, CNRS, UPRES A 5025, F-73376 Le Bourget Du Lac, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1998年 / 327卷 / 10期

关键词：

Alps; glacio-lacustrine; synsedimentary disturbances; morphology; grain size; seismites;

D O I：

10.1016/S1251-8050(99)80021-4

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Synsedimentary soft deformations have disturbed Quaternary lacustrine layered sediments, the 'Argiles du Trieves' formation. These structures have been investigated in order to characterise their possible seismic origin. Grain size and composition of respectively disturbed and undisturbed layers do not exhibit any major differences, they indicate a relatively quiet depositional environment. Morphological investigations on these disturbed levels reveal shaking processes. These investigations show structures similar to analogical modelling results, consisting of granular and natural material submitted to different vibrations. These disturbances could be considered as seismites, a hypothesis in agreement with the geodynamically active setting of Trieves area. ((C) Academie des sciences/Elsevier, Paris.).

引用

页码：645 / 652

页数：8