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.
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.
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.
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.
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.
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.
(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.
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.
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.
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.
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.
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.
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.
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