Fluvial Geochemistry of the Arctic Rivers of Eastern Siberia

9814903 edmond该提案要求支持继续对俄罗斯远东地区贝加尔湖以东的大型原始河流的河流地球化学进行长期调查。目的是利用热带地区的现有结果和本次调查，对气候对风化速率的影响进行比较研究，特别是铝硅酸盐降解的二氧化碳消耗率，以摩尔/平方公里/年为单位的OC02。没有找到！由于所有地质时间尺度上的古气候模型都假定了一种非常强的关系，在-30°c的范围内（仅包括夏季温度），研究结果是戏剧性的和出乎意料的，因此是有争议的。提出继续这项工作在黑龙江,一个相对未被污染的温带河,在远程流在远东泄其极端,包括堪察加半岛和高北极,Olekma的源头和维季姆河(左右两岸主要支流的莉娜)来源Trans-Baikal高地东部和南部贝加尔湖和可以提供的最接近的类似物到地下室地形已经采样在亚马逊的热带,奥里诺科河和刚果以及被侵蚀的喜马拉雅型碰撞带。关于微量元素和微量元素地球化学的平行项目将继续进行。对河砂的地球化学和岩石学的研究将由合作者进行，本提案不承担任何费用；水、悬浮及床质样本会按通常方式分发给美国及海外合资格的调查人员

9814903EdmondThis proposal requests support to continue long-term investigations of the fluvial geochemistry of the large pristine rivers in the Russian Far East, east of Lake Baikal. The objective is a comparative study, using existing results from the Tropics and this survey, on the influence of climate on weathering rates, specifically the C02 consumption rates by aluminosilicate degradation, OC02 in moles/kM2/yr. None is found! Since all models of paleo-climate on geological time-scales assume a very strong relationship, -x IO over the -30'C range examined (only summer temperatures included), the results are dramatic and unexpected and therefore controversial. It is proposed to continue this work in the Amur, a relatively uncontaminated Temperate river, on remote streams in the Far East that drain its extremes, including the Kamchatka Peninsula and the high Arctic, and on the headwaters of the Olekma and Vitim (major right-bank tributaries of the Lena) that have sources in the Trans-Baikal Highlands east and south of Lake Baikal and may provide the closest analogues to the basement terrains already sampled at Tropical latitudes in the Amazon, Orinoco and Congo and to eroded Iiimalayan-type collision zones. The parallel program on minor and trace element geochemistry will continue. The studies of the geochemistry and petrology of the river sands will be carried on by collaborators at no cost to this proposal; water, suspended and bed load samples will be distributed to qualified investigators in the US and overseas in the usual manner