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age α C B D E A A α α ( a) ( b) ( c) Dark black clay with many living mosses The lark clay and gravel debris with little moss relict Black sediments impacted by penguin droppings with little moss relict The moss humus Black anic mud with gravel debris from the nesting sites The mud impacted by penguin droppings with much moss relict Hardy sedimentary layer from penguin droppings with little moss relict The gravel debris from the nesting sites with the clay and much moss relict α AD3 G AD4 d b AD4 0cm10cm29cm23cm4cm2 4 6 8 10P2O5(%)250 350 450 550Sr(ppm)400 1200 2022F(ppm)05101520253050 100 150 200Zn(pppm)depth(cm)3 6 9Se(ppm)60 160 260Cu(ppm)0cm10cm19cmAD3 a 1 2 3 4 5P2O5(%)350 450 550Sr(ppm)300 1100 1900F(ppm)04812162080 120 160 200Zn(ppm)depth(cm)1 2 3 4Se(ppm)120 180 240Cu(ppm)0cm11cm54cm27cm35cm48cmc G 010203040500 2 4P2O5 ( % )depth(cm)2 4 6 8CaO ( % )0 200 400 600Sr ( ppm )0 2022 4000F ( ppm ) Zn ( ppm ) Cu ( ppm )Abandoned penguin rookery Active penguin rookery Ancient penguin active area Modern penguin active area Ancient tundra vegetation Modern tundra vegetation The mud of penguin droppings The clay with rotten mosses Black clay impacted by penguin droppings with little moss relict BL1 BL3 BL4 d a 05101520250 400 800F ( ppm )depth(cm)1000 2022 3000S ( ppm )20 70 120Zn ( ppm )2 3 4 5 6CaO ( % )150 200 250Sr(ppm)0cm5cm24cm14cmBL1 BL3 b 1 2 3P2O5 ( % )100 140 180Ba ( ppm )100 140 180Sr ( ppm )024681012141690 170 250F ( ppm )depth(cm)30 50Zn ( ppm )80 100 120Cu ( ppm )0cm3cm10cm14cmBL4 c 05101520250 3 6 9 12Se ( ppm )depth(cm)20 70 120 170Zn ( ppm )900 2400 3900S ( ppm )300 1100 1900F ( ppm )200 400 600Sr ( ppm )1 2 3 4 5P2O5 ( ppm )0cm3cm23cm 人類活動污染記錄 010500100015002022.Con.(%)2468100 500 1000 1500 2022Years .Y2(ng g1)500100015002022Hg(ng g1)01020304050HF4(ng g1)Rome fallRome & Han per.Islamic/Sui T.Chris