Global change and long‐term geomorphology

作者: C.D. Ollier

DOI: 10.1111/J.1365-3121.1992.TB00820.X

关键词: Mountain formationGeologyGeomorphologyTectonic upliftPangaeaTectonicsClimate changeOrbital forcingGlobal changeEarth scienceContinental margin

摘要: Landscape evolution is on the same time-scale as global tectonics, biological evolution, and major climatic change. Some features of change reflected in landscape result from breakup Pangaea. Others relate to changes, yet others a dominantly plains Mesozoic an increasingly mountainous Tertiary. Worldwide deep weathering profiles Cretaceous early Tertiary age suggest widespread planation warm, moist climates. Erosion deeply weathered regolith following formation new continental margins tectonic uplift led deposition unusual mature sediments. Many river patterns can be traced or older antecedents. Some changes are due orbital forcing, but may related changing positions continents, creation seaways, mountain building. The timing uplift, must resolved test models their mutual interaction. Geomorphic input drainage will essential component dealing with these problems.

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