这些是在查谟和安培尔发现并广泛使用的石头的图像;印度和巴基斯坦之间的克什米尔地区。在当地的说法中，这些被称为devir或devri。< / p >

Following is the description of the stone according to one website that I looked up:

Devri stone is an impure lime stone extracted from earth at various parts of the Kashmir. The stone is soft in its nature and gives white appearance after carving. The stone can be molded to any form or shape.

I am planning to write a research paper on 'hamam' which is an underfloor heating system used in the kashmir valley, devri stones are commonly used as the floor surface for the hamams. I would like to know if there is an globally accepted name for this type of stone, so that I can report that in my paper. Also, it would make easy for me to acquire scientific data about these stones.

石灰石通常按照Dunham &民间分类< / >。只有非常稀有或特殊的石灰石才会被命名，这些石灰石通常以它们的位置命名，例如钙华。你提供的图像不是很清晰，这使得我们不可能清楚地识别石灰岩。请考虑下次上传显示石灰石组成的近距离图片，例如生物碎屑和水泥。然而，印度地质学会有一篇论文，作者确定了来自查谟地区的石灰岩的年代，他们将其称为<强查谟石灰岩或<强>大石灰岩。由于叠层石在该地区发现，作者认为灰岩来自前寒武纪。

我希望这有帮助!< / p >