Contribution à l'étude des liaisons Loire-Seine : mise en évidence par l'étude des minéraux lourds de l'antécédence de la Loire en Sologne (Bassin Parisien, France)

Physio-Géo. Géographie physique et environnement

Larue, Jean-Pierre¹  Étienne, Robert¹ 

关键词: minéraux lourds;    Loire;    clinopyroxènes;    alluvions;    paléotracés;    heavy minerals;    alluvial deposits;    palaeocourses;   

DOI  :  10.4000/physio-geo.2181

学科分类：自然科学（综合）

来源: Revues.org

【 摘 要 】

The heavy minerals and the varietal characteristics of clinopyroxene grains (CPx) in alluvial deposits and other surficial formations located on the Loire-Seine interfluve show that no Loire-Seine connection has occurred since at least the Upper Pliocene. High percentage of green CPx in the NNW of Gien testifies of an old Loire terrace prior to the Pleistocene Ft terrace where brown CPx are prevalling. The rapid decreasing to the north of grenat and CPx is explained by removed Loire material and not by direct fluvial Loire transport.

【 授权许可】

Unknown