Origin of the Amazonian Rainforest  

作　　者：Nils-Axel Mörner Nils-Axel Mörner(Paleogeophysics & Geodynamics, Stockholm, Sweden)

机构地区：[1]Paleogeophysics & Geodynamics, Stockholm, Sweden

出　　处：《International Journal of Geosciences》2016年第4期470-478,共9页地球科学国际期刊（英文）

摘　　要：In the last 30 ma, the passive continental margin of South America and the Amazonian basin experienced three periods of major sea level inundation;viz. at around 20 ma, at around 10 ma and at around 3 ma. The establishment of the immense Amazonian rainforest ecosystem covering some 6 million square km can neither have occurred during the periods of high sea level nor at the intermediate periods of arid or semi-arid climatic conditions. Therefore, the origin of the Amazonian rainforest of present-day dimensions must be set at the Late Miocene. The establishment of the Amazonian rainforest implied the withdrawal of enormous quantities of water from the global hydrological cycle. The drastic increase in evaporation leading to the Messinian salinity crisis in the Mediterranean occurred at the same time as the Amazonian rainforest (sensu hodierno) establishment suggesting a causal linkage.In the last 30 ma, the passive continental margin of South America and the Amazonian basin experienced three periods of major sea level inundation;viz. at around 20 ma, at around 10 ma and at around 3 ma. The establishment of the immense Amazonian rainforest ecosystem covering some 6 million square km can neither have occurred during the periods of high sea level nor at the intermediate periods of arid or semi-arid climatic conditions. Therefore, the origin of the Amazonian rainforest of present-day dimensions must be set at the Late Miocene. The establishment of the Amazonian rainforest implied the withdrawal of enormous quantities of water from the global hydrological cycle. The drastic increase in evaporation leading to the Messinian salinity crisis in the Mediterranean occurred at the same time as the Amazonian rainforest (sensu hodierno) establishment suggesting a causal linkage.

关 键 词：Amazonian Rainforest Sea Level Changes Andean Uplift Messinian Crisis Late Miocene 

分 类 号：P73[天文地球—海洋科学]