1.琥珀的成因及主要产地琥珀是树脂埋藏地层中日久逐渐石化而成的。树木在遭受昆虫钻咬,或枝干折断时,均会分泌胶质物,以保护创口。分泌的树胶逐渐聚集、凝结,经地质运动深埋土中,或是被海浪冲到岸边,随树木顺河流冲刷而下,最后滞聚于三角洲的浅洼处。后渐渐被泥沙所覆 1. The causes of amber and the main origin Amber is gradually petrified resin buried formations. Trees are bitten by insect bites, or branches broken, will be secreted gel, to protect the wound. Secreted gum gradually gathered, condensed, deep buried in the earth by geological movement, or washed up by the waves to the shore, washed down along the trees along the river, finally converging in the shallow depression of the delta. After gradually covered by sediment