摩洛哥中高阿塔尔斯提姆斯蒂格特地区塞涅世系沉积学与岩石地层研究

A. Farah, A. Algouti, Abdellah Algouti
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引用次数: 2

摘要

本文从沉积学、地层学和古地理等方面介绍了摩洛哥中部高地图集地区上白垩统红色组(塞尼世系)的沉积学、地层和古地理特征。这些地层是逐层测量的,并进行了非常详细的采样。通过对石英颗粒起伏和表面特征的系统勘探,对石英颗粒进行了外相分析,确定了石英颗粒的成因,从而确定了不同的古环境。这些地层的粘土沉积似乎是一个有利的前景:高阿特拉斯中部盆地的粘土和非粘土沉积的演化将主要取决于构造、隆起、气候和其他影响的结合。senonian的厚度比其他子盆地(Albban和Imider)的厚度更重要,后者的厚度非常小。添辉石的Senonian对应于一系列的碎屑和蒸发碳酸盐相,证实了一个有几期海蚀通道的海岸沉积环境。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sedimentological and Lithostratigraphic Study of the Senonian Series in Timstiguite Region, Central High Atals, Morocco
In this paper, we present the sedimentological, stratigraphic and paleogeographic aspect of the Upper Cretaceous red formations (Senonian series) of Timstiguite region (Central High Atlas of Morocco). The formations were measured bed by bed and sampled in a very detailed way. An exoscopic analysis of the quartz grains was carried out by a systematic prospecting of the grains relief and theirs surface characteristic, this led us to characterize their origin and consequently to determine the different paleoenvironnements. The clay sediments of these formations seem to be a favorable prospect in point of view: evolution of the clay and non-clay sediments in this central basin of the High Atlas will depend mainly on the conjugation of tectonic, eustatic, climatic and other influences. The senonian thickness is more important than other sub basins (Albban and Imider) where it shows a very reduced thickness. The Senonian of Timstiguite corresponds to a succession of detrital and evaporitic carbonate facies, which confirms a coastal depositional environment with passages of some periods of marine emersions.
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