求助 T-7-Q29

gukw987

Prospecting for gold during the California gold rush was a relatively easy task,becuse of erosion, prehistoric glacier movement, and ancient ,gold-bearing thrust to the surface by volcanic activity put gold literally with reach for anybody wiht a pan or shovel.
 E  since erosion ,prehistoric glacier movement ,and ancient , gold-bearing riverbeds thrust to the surface by volcanic activity put gold literally wiht reach of
请帮忙 帮我分析一下句子结构  我实在看不懂   谢谢了

lonelyorchid

please double chech the sentence. some thing might be wrong...