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单词 Black shale
释义

Black shale

原声例句
美国国家公园

The land at the bottom of the sea was black shale rock.

海底的土地是黑色页岩岩石。

PBS地球-动物趣闻

In the geologic record, buried organic carbon with no oxygen shows up as black shales.

在地质记录中,没有氧气的掩埋有机碳表现为黑色页岩。

PBS地球-动物趣闻

And there are extensive black shale deposits in places like China and northern Africa, dating to the late Ordovician.

在中国和北非等地有大量黑色页岩矿床,可追溯到晚奥陶世。

世界新知聚焦:科学

" They drilled a hole several hundreds metres deep and they hit a deep, black, oily shale, " he said. " It turned out to be 1.1bn years old, which is absolutely incredible" .

" 他们钻出了一个几百米深的洞,然后钻到了一个很深的黑色油页岩," 他说," 竟不曾想到它有11亿年的历史,简直令人难以置信。"

中文百科

页岩 Shale

(重定向自Black shale)
铁质页岩
由页岩组成的河岸
Ejemplar de shale
Sample of drill cuttings of shale while drilling an oil well in Louisiana, United States. Sand grain = 2 mm. in dia.

页岩是一种沉积岩,成分复杂,但都具有薄页状或薄片层状的节理,主要是由黏土沉积经压力和温度形成的岩石,但其中混杂有石英、云母、长石的碎屑以及其他化学物质,根据其混入物的成分,可分为:

其中铁质页岩可能成为铁矿石,油母页岩可以提炼石油,黑色页岩可以作为石油的指示地层。

页岩形成于静水的环境中,泥沙经过长时间的沉积,所以经常存在于湖泊或沼泽、河流三角洲地带,在海洋大陆架中也有页岩的形成,页岩中也经常包含有古代动植物的化石。有时也有动物的足迹化石,甚至古代雨滴的痕迹都可能在页岩中保存下来。

英语百科

Shale 页岩

(重定向自Black shale)
Sample of drill cuttings of shale while drilling an oil well in Louisiana, United States. Sand grain = 2 mm. in dia.
Limey shale overlaid by limestone, Cumberland Plateau, Tennessee
Splitting shale with a large knife to reveal fossils

Shale is a fine-grained, clastic sedimentary rock composed of mud that is a mix of flakes of clay minerals and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite. The ratio of clay to other minerals is variable. Shale is characterized by breaks along thin laminae or parallel layering or bedding less than one centimeter in thickness, called fissility. Mudstones, on the other hand, are similar in composition but do not show the fissility.

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更新时间:2025/6/18 15:02:56