相比于大陆冰川沉积物,海洋沉积物提供了更完整的更新世时期的地质记录。
Ocean sediments presented a much more complete geologic record of the Pleistocene than continental glacial deposits did.
19世纪晚期,在地质学家对这些冰川沉积进行定位的时候,他们意识到有好几个漂流层,位置较低的对应的是更早的冰川期。
As geologists mapped glacial deposits in the late nineteenth century, they became aware that there were several layers of drift, the lower ones corresponding to earlier ice ages.
这个滑坡沉积物大可以排除远离上游的沉积物是冰川沉积的想法。
This landslide deposit pretty much rules out the idea that the deposits farther upstream are glacial outwash.
沉积组构分析的方法是说明冰川沉积作用、冰成沉积物形成机理的一种有用的工具。
The method of sedimentary fabric analysis is a useful tool in investigating the glacial sedimentation and the mechanism of glacial sediment formation.
这种色调是由淤泥造成的,淤泥被冰川分成很多远离谷壁的细碎的小块,沉积在湖中。
The hue is caused by the silt that is finely ground away from the valley walls by the glacier and deposited in the lake.
最后一次冰川作用的漂浮物沉积在最近的其中一个地质时期——更新世,这段时期从180万年前持续到1万年前。
The drift of the last glaciation was deposited during one of the most recent epochs of geologic time, the Pleistocene, which lasted from 1.8 million to 10,000 years ago.
这种物质覆盖的区域十分巨大,因此使其沉积下来的冰一定是比格陵兰岛或南极洲更大的大陆冰川。
The areas covered by this material were so vast that the ice that deposited it must have been a continental glacier larger than Greenland or Antarctica.
沿着美国东海岸,最南边的冰川运动被大量的沙子和终碛石的漂流沉积物(形成了长岛和科德角)所记录下来。
Along the east coast of the United States, the southernmost advance of this ice is recorded by the enormous sand and drift deposits of the terminal moraines that form Long Island and Cape Cod.
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.
然而,使所有的黑土形成冰川作用的问题是,在前寒武纪沉积物中广泛分布有黑土。
The problem with ascribing all tillites to glaciation, however, is that tillite deposits are widespread in Precambrian sediments.
很明显冰川作用就发生在相对不远的过去,因为漂流物很软,像新鲜的沉积物。
It was apparent that the glaciation occurred in the relatively recent past because the drift was soft, like freshly deposited sediment.
如你所知,沉积物是通过风、水流或冰川运动等自然过程输送的物质,如沙子、砾石、化石碎片等。
Sediment as you know, is material like sand, gravel, fossil fragments that is transported by natural processes like wind, water flow or the movement of glaciers.
沉积到地面的大气微粒同样能融化冰川。
Particulates can also melt the ice when they precipitate out of the air and land on it.
(之后,)蓝绿色的海水取代了冰川,由冰川磨碎的岩石沉积物使这里的海水浑浊;
The glaciers give way to green-blue water, milky with the fine sediment created as the ice grinds over rock.
这个冰川湖的一端是冰川的末端,另一端则是一排由冰川搬运来的沉积物和岩石累积而成的冰碛。
This glacial lake is bound by the glacier snout on one end, and a moraine-a mound formed by the accumulation of sediments and rocks moved by the glacier-on the other.
五大湖就是当时冰川融化所形成的。标志着冰原在东南方向到达的最远距离的长岛和科德角是由冰中的沉积物形成的。
The Great Lakes are puddles left over from when it melted, and Long Island and Cape Cod, which mark the southeastern limit of the ice's reach, are formed from debris carried by the ice.
我们进行了一次伟大的旅行,看见了3500米以上地方冰川的证据,但是我知道两天后进行了一次成功的科拉才看到更多河流或与湖泊相关的沉积物。
We had a great trip and saw evidence of glaciers above 3, 500 meters, but I didn't see any more river - or lake-related deposits until two days and a successful kora later.
这个冰川湖的一端是冰川的末端,另一端则是一排由冰川搬运来的沉积物和岩石累积而成的冰碛。
This glacial lake is bound by the glacier snout on one end, and a.
冰川泥石流是由冰碛物与冰雪融水混合形成的一种碎屑重力流沉积。
Glacial debris flow is a kind of debris gravitational flow deposits that result from the mix of moraines and ice snow melt water.
而融水将长久以来冰川冲刷的沉积物带到了海岸,浑浊了水域,于赛了航道。
And meltwater carries the sediment scoured long ago by the glaciers to the coast, where it clouds the water and silts up once-navigable channels.
概述了滨海砂矿、冰川砂矿、冲积砂矿和生物、化学沉积矿产的成因及成矿期。
In this paper the genesis and formation periods of the placers (littoral, glacial and alluvial) and biogenic-biochemical sedimentary deposits are briefly discussed.
这个坑是在大约2万年前由一座消退的冰川留下的,周围沉积着数以千计的光滑鹅卵石,看起来“就像一只母鸡在下蛋,”赫西说。
It had been carved out about 20,000 years earlier by a retreating glacier that deposited thousands of beach-smooth cobblestones around the hole, "like a hen laying eggs," Mr. Hussey said.
冰碛由冰川携带并最后沉积下来的石砾、石块及其他碎石的堆积。
An accumulation of boulders, stones, or other debris carried and deposited by a glacier.
冰期中的全球性冰川事件不仅对全球性海平面变化,而且对低纬陆棚碳酸盐环境的沉积作用也有重要影响。
World-wide glacial event in an ice age not only contributes to eustatic sea level changes but also penetrates to the shelf carbonate environments and sedimentation coeval low latitude area.
某些U型冰川谷也可能起因于沉积作用。
The U-shape of some glacial valleys may be due also to deposition.
指出这些事件大部分首先发现于冰川和深海沉积物中,且集中在北半球的高纬度地带。
Most of those events were found in the glacial and deep sea sediments, mainly occurring on the high latitudes of the Northern Hemisphere.
中国东部(含庐山)第四纪冰期之争,表现在地貌、沉积与冰川发生条件三个方面。
The disputes about the Quaternary Ice Age in eastern China (including Mount Lushan) involve three aspects, i. e. topography, sedimentation and conditions of glaciation.
主要沉积类型有:湖滩沉积、浅水沉积、静水沉积和冰川三角洲沉积。
The various types of glaciolacustrine deposits are as follow: beach deposits, shallow-water deposits, still-water deposits and glacio-fluvial delta deposits.
主要沉积类型有:湖滩沉积、浅水沉积、静水沉积和冰川三角洲沉积。
The various types of glaciolacustrine deposits are as follow: beach deposits, shallow-water deposits, still-water deposits and glacio-fluvial delta deposits.
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