Non-steady state phanerozoic carbon and sulfur cycling

地球与太阳系的其他行星不同，它的特点是元素在大气层、水圈和岩石圈中活跃地循环。描述显生宙这些旋回（例如碳、氧和硫旋回）演化的模型通常采用稳态方法。然而，最近发表的高分辨率C和S同位素数据（Weissert & Erba 2004, Paytan et al. 2004）不能再在稳态系统的背景下解释。非稳态质量平衡模型可以成功地解释上述数据，但需要对火山或风化通量进行不切实际的大变化（Paytan et al. 2004）。此外，迄今为止发表的所有假设都无法调和C和S同位素记录，这一问题通常被称为C和S同位素地球化学的核心问题（Holser et al 1988）。

Earth, unlike all other planets of the solar system, is characterized by the active cycling of elements through its atmosphere, hydrosphere and lithosphere. Models describing the Phanerozoic evolution of these cycles ( e.g., the carbon, oxygen and sulfur cycles), usually apply a steady state approach. However, recently published high resolution C and S isotope data (Weissert & Erba 2004, Paytan et al. 2004) can no longer be explained in the context of a steady state system. Non-steady state mass balance models can successfully explain the above data, but require unrealistically large changes to volcanic or weathering fluxes (Paytan et al. 2004). Furthermore, all published hypotheses to date are unable to reconcile the C and S isotope records, a problem which is often referred to as the central problem of C and S isotope geochemistry (Holser et al 1988).