Studies show that surface sediments of the flood land seem to be the best sampling media in ultra-low density geochemical investigation in forest-swamp areas.
研究成果表明，河漫滩表层沉积物是森林超低密度地球化学调查的最佳采样介质。
This method is rapid, cheap, effective and non-pollution and is a new technology of surface geochemical exploration.
该方法有快速、廉价、有效、无污染等特点，是地表地球化学勘探的一种新方法。
This makes geochemical prospecting turn from the study of seeping "trace" and halo anomalies of hydrocarbons in near surface to a direct research and prediction of the target distribution.
使油气化探工作从近地表研究油气渗逸“痕迹”和晕圈异常进而预测目的层在平面上的位置转向直接对目的层进行研究和预测。
By using data of surface geochemical exploration, it is quite accurate to evaluate the conditions of saving oil gas fields especially for those leaking ones owing to be destroyed in last period.
利用地表油气化探资料可以较准确地判断油气藏保存条件的好坏，尤其对于已存在过又遭后期破坏的泄漏油气藏。
And the geochemical characteristics of the surface sediments reflect the impact of anthropogenic activities.
而表层沉积物稀土特征反映了人类活动的影响。
The deep structural informations are also probably transmitted through mechanical deformations and deep geochemical reactions to the earth's surface.
这种深部构造信息也有可能通过地壳的动力变形和深部地球化学反应传递到地表。
The method of surface geochemical exploration for oil and gas have already been achieved more better results in plain areas.
地表油气化探方法在平原地区的应用已取得了较为满意的工作效果。
The interstitial water in surface sediments is taken to be the sample source of liquid hydrocarbon for offshore oil and gas geochemical prospectation.
表层沉积物间隙水可作为海洋油气化探液态烃的样品源。
Burma Feicui was subjected to surface geochemical process, resulting in the formation of special weathering crust, which is of great value of technological application.
缅甸翡翠在表生地球化学作用下，常形成特殊的风化皮壳，并具有较高的工艺利用价值。
Because of the complicated gas-water geochemical barrier formed by the involvement of surface water, the precipitation of uranium occurred in overlying aquifers to form uranium deposit.
在上覆透水层，由于地表水的参与形成复杂的气水地球化学垒，使铀沉积成矿。
Because of the complicated gas-water geochemical barrier formed by the involvement of surface water, the precipitation of uranium occurred in overlying aquifers to form uranium deposit.
在上覆透水层，由于地表水的参与形成复杂的气水地球化学垒，使铀沉积成矿。
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