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Natural to anthropogenic influence of environmental change Jakarta Bay: seismic reflection and sediment coring studies. Hal.125-130
The Shallow sediment coring data, 100cm to 160cm length, indicates significant anthropogenic influence at the depth 50cm, the sediment core shows decreasing sharply of Si,Ca,Ti and Fe content interpreted as decreasing of volcanic source rocks. While to the near sediment surface was indicated by increasing of major element content such as Cu, Ti and Fe and also the heavy metals content such as Pb,Cr,Cd,Sn,and Zn. The presence of major of heavy metals were possible related to human activities such as deforestation, industry, transportation and agriculture while in depth, the heavy metal content related to volcanic rocks as source rocks. The environmental degradation in modern period detected at the sediment surface indicated by increasing sharpl
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