Gravity-induced recumbent folds and low angle normal faults in the Alpujarras region (Betic Cordilleras, Spain): indications of Miocene extensional tectonics in the western Mediterranean

被引：8

作者：

Orozco, M ^{[1
]}

AlonsoChaves, FM ^{[1
]}

Nieto, F ^{[1
]}

机构：

[1] UNIV HUELVA,DEPT GEOL,PALOS FRONTERA 21819,HUELVA,SPAIN

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1997年 / 325卷 / 03期

关键词：

extensional collapse; recumbent folds; Alpujarride complex;

D O I：

10.1016/S1251-8050(97)88291-2

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Large north-facing recumbent folds in the Alpujarride Domain of the Betic orogen, heretofore related with a contractional nappe-stacking episode predating the early- to middle-Miocene extension, can be reinterpreted as gravitational folds, their development being connected with the extensional event that produced the low-angle normal faults and extensional detachments in Miocene times. This conclusion is based on detailed research carried out in the eastern part of the Alpujarras region (souther Betics) and includes the establishment of the fold geometry and metamorphic frame by means of field and mineralogical techniques, and the analysis of the relationships between recumbent folds and extension-related structures such as low-angle normal faults, stretching lineations, boudinage structures, etc.

引用

页码：215 / 219

页数：5