UC知道翻译一些专业文章 急用 送积分
来源：百度知道 编辑：UC知道 时间：2024/06/04 05:27:25
1.one of the primary techniques that has been utilized in determining directing of ice movement by Pleistocence glaciers is through the presence of exotic rock particles which can be tied to a known sourse.large clasts of basaltic rock with native copper have been found in glacial drift in southern Illinois.the oniy source for this copper is the Keewenaw Peninsula of Michigan.This information not only establishes the sourse rock type but also provids general paleocurrent direction from the source to its present location.
2.Coarse conglomerates characterize the Cambrian section in the vicinity of the Baraboo syncline in south central Wisconsin.The major rock unit that forms the syncline is a red to maroon Precambrian quartzite.The clasts which are included in the basal Cambrian strata are clearly derived from this Baraboo Quartzite.These distinctive quartzite pebbles have been found in Cambro-Ordovician strata 85km to the south,near Madison.
3.The distribution
2.Coarse conglomerates characterize the Cambrian section in the vicinity of the Baraboo syncline in south central Wisconsin.The major rock unit that forms the syncline is a red to maroon Precambrian quartzite.The clasts which are included in the basal Cambrian strata are clearly derived from this Baraboo Quartzite.These distinctive quartzite pebbles have been found in Cambro-Ordovician strata 85km to the south,near Madison.
3.The distribution
对已确定由更新世冰川的冰层移动指挥使用的主要技术1.one是已在冰川发现，通过外来的岩石，可连接到一个与原生铜玄武岩称为sourse.large碎屑粒子的存在南部Illinois.the这个铜oniy源漂移，是Michigan.This信息Keewenaw半岛不仅确立sourse岩石类型，而且从源头上provids一般古水流方向，到目前位置。
2.Coarse企业集团的特点在附近的巴拉布向斜寒武纪节中南部Wisconsin.The主要岩石单元，形成了向斜是红色，栗色的前寒武纪基底中寒武世地层包括quartzite.The碎屑显然来自这巴拉布Quartzite.These独特的石英砾石已Cambro发现，奥陶系地层，南85公里麦迪逊附近。
3，颗粒大小和形状的分布，通过时间和空间可以提供大量信息，在盆地analysis.In一般有用，试图建立在粒子纹理，在地理上和stratigraphically.It存在某些趋势是整个岩石上，注意力集中，但个人的粒子，如圆度和大小，属性没有纹理属性。