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第四百九十一章 深入溶洞(1 / 2)

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随着脚步的深入,洞内的景观也一一展现在众人眼前。

就再这,原本在队伍中间的梁旭故意折返跑到了公孙昊他们这边来。

“你怎么过来了。”公孙昊有些诧异的问道。

“拍那帮人没多少意思,我还是来你这比较靠谱,有你和刘教授在这,可拍的内容要比他们强多了。”

听到这,刘来庆饶有兴趣的问道:“这还有什么说法?”

“这小子就是个小百科,问他什么他都能说出个子丑寅卯来。”

听完梁旭的话,刘来庆就忍不住问了一句:“那你给我讲讲这个石钟乳!”

公孙昊有系统相助,自然是张口就来:“在溶洞的天花板上,有很多微小的裂隙,里面的水承受着很大压力,它们会以缓慢的速度向下滴落。

而水一旦滴出来,进入溶洞这么宽广的空间时,压力一下子降低,于是水中的碳酸氢钙变成了碳酸钙,沉淀下来。经年累月,就在裂隙下方形成了似钟似乳一样的石头,即石钟乳,也称钟乳石。”

石钟乳点点头,进一步的解释道:“要是我们把石钟乳横切开来,会看到年轮般的同心圆构造。这些同心圆是在不同时段形成的,而在不同的时段内,气候是不一样的,这种差异能反映在石钟乳上面,科学家正在尝试解读石钟乳中不同圈层的成分,分析古气候。‘’

说完,刘来庆用电筒扫视了一圈周围,然后找到一个石笋和钟乳石即将链接起来的地方,向梁旭解释搭配:“洞顶的水滴落在地面,会在地面上沉积一部分碳酸钙,这些碳酸钙如竹笋一样,从地面向上生长,故名石笋。

你看这两个就是即将要生长连接在一起的石钟乳和石笋。两者一旦汇合就变成了石柱。源自同一滴水处的石钟乳和石笋,一个向下生长,一个向上生长,最后两者汇合,形成一个整体的柱状岩石,这就是石柱。”

听到这,梁旭若有所思的点了点头,然后继续拍摄。

又走了一小段几率,公孙昊再次开口道:“刘教授刚才说的的还有一类流石景观,那又是什么?”

“流石,是溶洞中流水形成的一种景观类型。常见的流石景观包括石幔、石旗、肉条石、石盾、边石坝等。我来看看你,那种景观叫做石幔?”

公孙昊听完,用电筒在周围寻找了一圈之后,指着不远处的一出岩壁上说道:“石幔又叫石帷幕或石帘。水在洞壁上一边流动一边沉淀,形成这种帷幕状景观。它还有两种表现形式就是石旗和肉条石。”

听到肉条石,梁旭开口了:“我之前曾经去一个奇石展馆里面进行过拍摄,里面有一些形似五花肉的石头,是不是就是你们说的这个肉条石?”

刘来庆点点,对他解释道:“肉条石实质上就是彩条石旗,状若五花肉片,它是由‘脏水’沉积出来的。混浊的地表水渗入地下,再由溶洞洞顶渗出,过程就像洗拖把。开始水最脏,沉积物颜色最深,往后逐渐清澈,沉积物也就越来越白净,五花肉石旗就是这么长出来的。”

“那石旗又是什么?”梁旭接着问道。

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