Global Early Cretaceous Large-scale Magmatic Activity, Iron Deposit Formation And Possible Coupling Relationship With Climate Change

Earth system science is the research frontier of earth sciences at present.The global climate has undergone tremendous changes in the early Cretaceous period.Scientists have made detailed scientific research environmental changes in cretaceous.But the research on the formation of iron deposits the impact of the environment is done by few scientists.This article mainly makes exploratory research by discussing the large-scale magmatism,the formation of iron deposits,the release of greenhouse gases,and the possible coupling relationship to climate change in the early Cretaceous.This paper mainly demonstrates the coupling relationship between the mentioned important geological events of the early cretaceous through big data statistics,collation analysis,mapping comparison and other scientific means.It is found that the large-scale magmatism,massive iron deposits,formation and the appearance of continental red layer have a very consistent in space-time.We think large-scale magmatism and massive iron deposit,formation resulting in a mount of CO₂greenhouse gases emission,it caused the global temperature rising.With the rising temperature in the atmosphere,Fe²⁺change to Fe³⁺in the sedimentary rocks,resulting in the formation of red layer during early cretaceous.At the same time,the CO₂content in the atmosphere increased sharply,and the oxygen content degreased sharply.In order to adapt to this extreme environmental change,metazoans tended to be miniaturized.Under the global warming environment we face today,we have to learn a lesson from early cretaceous situation.So we can respond more wisely to climate change and humans,development in the future.