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Abstract

Recently available vitrinite reflectance data, temperature-depth profiles, and heat flow values have made it possible for us to develop an improved computer model to simulate the subsidence, thermal, and maturation history of the Pannonian basin. This model takes into consideration different rates of extension in the lower and upper lithosphere, heat generation in the crust, the thermal blanketing effect of fast sedimentation, the change in porosity and thermal conductivity in space and time, and both normal and abnormal compaction of sediments. Model parameters are constrained by comparison of predicted and observed subsidence histories, present crustal thicknesses, temperature versus depth profiles, and heat flow values. We conclude that lithospheric stretching, combined with major additional thinning of the subcrustal lithosphere, is adequate to explain the formation and evolution of the Pannonian basin.

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