Primary Data

There are two main hypotheses. The first one is to answer the phase of intrusions in Ertsberg Intrusion Complex and the second is to identify the petrogenesis and tectonic setting of the Ertsberg Intrusion Complex. Geochemical data (XRF,ICP_MS) showed that there are two phases of intrusion and high-k calc-alkaline to shoshonitic magmas were enriched by sedimentary components in post-collision setting. In the research paper, sample identifying was done detail for each sample in the megascopic study to understand the crosscutting relationship of the rocks. Moreover, the important one is to collect and identify the fresh samples. For the geochemistry study, major elements were used to identify the processes of magma using Harker variation diagram, SiO2 vs K2O diagram, and trace elements were used to identify the petrogenesis of magma and tectonic setting using Ta/Yb versus Ce/Yb diagram, [Y+Nb] vs Rb geotectonic discrimination diagram, Ce/P2O5-3*Zr-50Nb ternary diagram, and spider diagram. Furthermore, combining the trace elements and REE elements were used to identify the genetic magma and possible tectonic setting using CI Chondrite-normalized REE diagram and LILE vs HFSE diagram.

本研究提出了两大主要假设。首项假设旨在解答埃茨伯格侵入体复合体的侵入阶段，次项假设则致力于识别该复合体的岩浆成因及构造背景。地化数据（XRF、ICP_MS）揭示了侵入体存在两个阶段，且高钾钙碱性至肖申纳岩浆在碰撞后环境受到沉积成分的富集。在研究论文中，对每一份样本进行了详细的鉴定，并在宏观研究层面解析岩石的交错关系。尤为重要的是，收集并鉴定新鲜样本。对于地化研究，采用哈克变异图、SiO2与K2O关系图等主要元素来识别岩浆形成过程，并利用微量元素通过Ta/Yb与Ce/Yb图、[Y+Nb]与Rb地球构造区分图、Ce/P2O5-3*Zr-50Nb三元图和蜘蛛图等来识别岩浆的成因和构造背景。此外，结合微量元素和稀土元素，利用CI球粒陨石标准化REE图和LILE与HFSE图来识别成因岩浆及可能的构造背景。