Abstract
The early Eocene is a period with very high atmospheric CO2 levels, which receives many interests from climate modelling aspects. To simulate the early Eocene paleoclimate, a realistic reconstruction for land-sea distribution, paleotopography and paleobathymetry is the fundamental step. Here, we present global paleogeographic reconstructions for the early Eocene (∼55 Ma), based on integrated paleogeographic data set, the plate-tectonic reconstruction software (GPlates) and geographic information system software (ArcGIS). Comparing with previous paleogeographic reconstructions, we improve the reconstructions by incorporating many recent geologic data and data set, including: (1) Better representations of the Tethys Sea, some marginal or inland seas in the East and Southeast Asia, Atlantic and Arctic region, and the Drake Passage and Tasmanian Gateway; (2) integrated paleoelevation data of global high plateaus and mountains, especially the paleotopography of East Asia, and adopting the latest paleotopographic reconstruction data of the Antarctica; and (3) using the latest data set of oceanic crust paleo-age and oceanic sediment thickness to reconstruct the paleobathymetry.
Published Version
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