Global Warming in the Proterozoic; extensive decarbonation event in the lower crust and its implications to the surface environment

在印度南部的喀拉拉邦和纽约州的阿迪朗达克山脉进行了实地考察。对这些地区的样品进行了岩石学观察。已证实下地壳岩中普遍存在石榴石和锆石中的CO_2流体包裹体。建立了连接固体地球和地表环境的CO2循环数值模型。已经证明，元古界预期的一次脱碳事件对地球表面温度产生了广泛的影响。提出了一种估算俯冲带热结构的新方法。这些成果在6次讲座中发表，并以13篇论文的形式发表在学术期刊上。

Field works in Kerala, southern India and Adirondack Mountains, NY were done. Petrographic observations of samples from these localities were done. It has been confirmed that CO_2 fluid inclusions in garnet and zircon were common in these lower-crust rocks. A numerical model of the CO_2 cycle connecting the solid Earth and the surface environment was constructed. It has been demonstrated that an expected decarbonation event in the Proterozoic had extensive effect to the Earth's surface temperature. A new method to estimate a thermal structure of the subduction zone was developed. These results were presented in 6 talks and published as 13 papers in academic journals.