M?moires de la Soci?t? G?ologique de France, 1911, Vol. 18: Pal?ontologie; M?moire N? 44, les Conquilles du Quaternaire Marin du S?n?gal (Classic Reprint)
M?moires de la Soci?t? G?ologique de France, 1911, Vol. 18: Pal?ontologie; M?moire N? 44, les Conquilles du Quaternaire Marin du S?n?gal (Classic Reprint)
Excerpt from M???moires de la Soci???t??? G???ologique de France, 1911, Vol. 18: Pal???ontologie; M???moire N??? 44, les Conquilles du Quaternaire Marin du S???n???gal Parfois, au - dessous de l'argile noire se trouvent une ou plusieurs couches de'sel gemme, s???par???es pardes bancs d???vase argileuse noire; ces bancs de sel gemme, dont l'???paisseur peut atteindre 20 centim???tres, sont exploit???s dans plusieurs salines pour les besoins de la Mauritanie et 'du S???n???gal; ils se sont form???s par ???vaporation, lors du ...
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Excerpt from M???moires de la Soci???t??? G???ologique de France, 1911, Vol. 18: Pal???ontologie; M???moire N??? 44, les Conquilles du Quaternaire Marin du S???n???gal Parfois, au - dessous de l'argile noire se trouvent une ou plusieurs couches de'sel gemme, s???par???es pardes bancs d???vase argileuse noire; ces bancs de sel gemme, dont l'???paisseur peut atteindre 20 centim???tres, sont exploit???s dans plusieurs salines pour les besoins de la Mauritanie et 'du S???n???gal; ils se sont form???s par ???vaporation, lors du dess???chement des anciennes lagunes, et ils ont ???t??? conserv???s gr???ce au climat d???sertique de la r???gion et a la pr??? sence des couches de vase argileuse qui les recouvrent. L'existence, dans quelques sebkhas (marsa), de plusieurs couches de sel superpos???es, s???par???es par des argiles noires, montre que ces d???pressions lagunaires ont ???t??? plusieurs fois envahies par la mer. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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