黏土和砂岩都是不坚固的岩石构造。
恐龙湾中的化石嵌在坚硬的砂岩中。
The fossils at Dinosaur Cove are embedded in hard sandstone.
他开始用凿子将砂岩雕刻成一只狗。
它广阔的红色印度砂岩和波浪状的玻璃带是美丽的。
Its expanse of red Indian sandstone and wavy ribbons of glass is beautiful.
我们知道它是由1.5亿到3亿年前在某地固化的砂岩形成的。
We knew that it was formed from sandstone that solidified somewhere between 150 and 300 million years ago.
砂岩通常是良好的含水层，而细粒泥岩通常是不透水的。
Sandstones generally make good aquifers, while finer-grained mudstones are typically impermeable.
由于像如砂岩和砾岩这样的沉积岩是多孔的，它们是地下水的重要潜在来源。
Because they are porous, sedimentary rocks, such as sandstones and conglomerates, are important potential sources of groundwater.
花岗岩底座上整齐地立着几只粉色砂岩大象。更多的大象喷出一串串水流，引起喷泉跃动。
Pink sandstone elephants stand to attention on granite plinths. Fountains leap, as more elephants squirt jets of water.
一旦你这样做了，你就可以比较样品中砂岩里锆石的年龄和山上锆石的年龄。
Once you do that, you can compare the age of the Zircon in the sandstone in your sample to the age of the Zircon in the mountains.
大部分的石灰岩和砂岩的蓄水层都是深而广的，但可能含有不可再生的地下水。
Most limestone and sandstone aquifers are deep and extensive but may contain groundwaters that are not being recharged.
大多数石灰岩和砂岩的蓄水层很深并且规模很大，但是它们含有的地下水可能是当前无法再生的。
Most limestone and sandstone aquifers are deep and extensive, but may contain groundwaters that are not being recharged.
在这种情况下，铀铅定年法被用来确定样本中一半的砂岩是在阿巴拉契亚山脉花岗岩形成的同时形成的。
In this case, Uranium-Lead Dating was used to establish that half of the sandstone in the samples was formed at the same time the granite in the Appalachian Mountains was formed.
勃鲁姆翻过一块令人心驰神往的砂岩，上面雕刻着一个孩子和一只鹈鹕，然后欣赏着一块狮鹫饰板。
Blum flipped past an evocative sandstone carving of a child and a pelican, then admired a griffin plaque.
在印度，许多已知最早的印度教神像都可以追溯到Kushan帝国时期，这些神像是用马图拉的斑点砂岩或Gandharan 的灰色片岩建造的。
Many of the earliest known images of Hindu deities in India date from the time of the Kushan empire, fashioned either from the spotted sandstone of Mathura or Gandharan grey schist.
奥加拉拉含水层是一个砂岩地层，位于从德克萨斯州西北部延伸到南达科他州南部，约583000平方公里土地的地下。
The Ogallala aquifer is a sandstone formation that underlies some 583,000 square kilometers of land extending from northwestern Texas to southern South Dakota.
上过这门课的同学都应该知道，我们一般会通过观察砂岩中的颗粒类型，也就是砂岩中的实际颗粒，来确定它的来源。
As everyone in this class should know, we usually look at the grain type within sandstone, meaning the actual particles in the sandstone, to determine where it came from.
存在于两个相连地层之间的岩石，可能在这一层是泥板岩，而在另一层中是砂岩；但存在于泥板岩或者砂岩中的化石往往都是相同的。
While rock between two consistent strata might in one place be shale and in another sandstone, the fossils in that shale or sandstone were always the same.
地质学家杰拉德·邦德注意到，一些沉积物颗粒被氧化铁染色，这表明它们起源于冰川覆盖红砂岩露头的地方。
Geologist Gerard Bond noticed that some of the sediment grains were stained with iron oxide, evidence that they originated in locales where glaciers had overrun outcrops of red sandstone.
大理石砂岩建造的琥珀堡拥有错综的雕刻；巨大的斋格尔堡曾经充当火炮生产中心。
The marble-and-sandstone Amber Fort has intricate carvings; the immense Jaigarh Fort once served as a center of artillery production.
沉积岩有杂砂岩、粉砂岩、凝灰岩、泥质岩等。
The sedimentary rocks are graywacke, siltstone, tuff andpellitie, etc.
学者们对努比亚砂岩含水层寿命的估计相差悬疏，从一百年到一千年不等。
Estimates for the life of the Nubian sandstone aquifer range from a century to a millennium.
大卫·沃克是诺丁汉洞穴勘测组的组长，他负责勘测石头城堡的地基，这是一块位于城市中心的巨型砂岩露头。
David Walker, head of the Nottingham Caves survey, surveys the base of Castle Rock, a large sandstone outcrop in the heart of the city.
另一个重大发现是，陵墓的白色大理石和红色砂岩结构正在销蚀。
Another significant discovery was withering of the monument's white marble and red sandstone structure.
沃克说：“诺丁汉市大约有500个砂岩洞穴，许多遗址已禁止游客观光。这些洞穴可以追溯到公元800年的维京时代。”
Nottingham has about 500 sandstone caves, many closed to the public, Walker said. The caves date back to early Viking times in about 800 A.D..
住在委内瑞拉、巴西、圭亚那结合处的砂岩高地，石蟾蜍得与蛇、蝎子、狼蛛这类掠食者竞争。
Found in the sandstone plateau that overlaps Venezuela, Brazil and Guyana, the pebble toad has to contend with predators such as snakes, scorpions and tarantulas.
闪电越过一整块的红色砂岩地标将游客引向了澳大利亚的中心。
Lightning flashes over Ayers Rock, a landmark red sandstone monolith that draws tourists to Australia's center.
这些足迹仍非常清晰，而且深陷在砂岩河床上，似乎这只霸王龙上个星期才刚走过一样。
The imprint is well defined and deeply embedded in the sandstone riverbed, as if the tyrannosaur had walked there only last week.
砂岩是诺丁汉地下绝世文物瑰宝存在的关键之处。
Sandstone is the key to Nottingham's unique subterranean heritage, he said.
然而，对那些38到55米高，各自雕刻在砂岩悬崖里的雕像进行年代测试已经被证明是存在问题的。
But dating the massive statues-38 and 55 meters high, respectively-that were carved into the sandstone cliffs has proved problematic.
然而，对那些38到55米高，各自雕刻在砂岩悬崖里的雕像进行年代测试已经被证明是存在问题的。
But dating the massive statues-38 and 55 meters high, respectively-that were carved into the sandstone cliffs has proved problematic.
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