stalagmite

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When a drop lands, some of this mineral is deposited at the landing site, where it accumulates, forming a stalagmite.
当水滴落地，其内一部分溶解钙碳酸盐在地面存储下来，日积月累，就慢慢形成了石笋。
His air bubbles forced down by the current in a blue hole on Abaco, Kenny Broad fights to the surface, a stalagmite under his arm.
阿巴科岛的一个深穴里，肯尼·布劳德正在向水面游去，水流把他吐出的气泡压了下去。他的胳膊下面还夹着一块石笋。
Counting the layers is one way of assessing how old a stalagmite is. But radioactive dating provides a second, and sometimes more accurate, assessment.
而计算石笋的年轮只是测量其年龄的一种方法，放射性年代测定技术提供了另一种更为精确的方法。

a column of rock that rises from the floor of a cave, formed over a very long period of time by drops of water containing lime falling from the roof of the cave

A stalagmite is a long piece of rock which sticks up from the floor of a cave. Stalagmites are formed by the slow dropping of water containing the mineral lime.

石笋
Now the high-resolution proxy records that can reveal environment change are ice core,tree-ring,historical documents,lake sediment and stalagmite,etc.
从目前的研究来看,能敏感响应环境变化的高分辨率的信息载体主要有冰芯、树轮、历史文献、湖泊沉积及石笋等。
生物学
石笋
The conventional way to solve the stalagmite sample is solvent method, but this methodneeds large quality of samples. This is not propitious to the demand of high resolution.
石笋样品的处理没有采用传统的索氏抽提法，为提高石笋样品生物标志化合物的时间分辨率而采用了酸解法对石笋样品进行了处理，减少了样品量的需求，这样较大程度上提高了石笋样品的时间分辨率。