胶东蓬家夼金矿区钾玄质煌斑岩的元素地球化学研究表明，其成分上具有高碱富钾、高铝低钛、大离子亲石元素和轻稀土元素强烈富集及相容元素（Cr、Co、Ni）明显亏损等特点。钾玄质岩浆是由富集地幔通过批式部分熔融作用产生的，而且其原始岩浆在上升和侵位过程中存在橄榄石和辉石等矿物相的分离结晶，并伴有陆壳物质的混染。本区煌斑岩具有与陆弧有关的钾质火成岩类似的地球化学特征，可能与燕山期伊泽奈崎洋向中国东部大陆下的俯冲作用有密切的成因联系。 Elemental geochemical studies on the K-type porphyry lamprophyres in the Jiaodong Pengjiaji gold deposit show that the composition of the element is characterized by strong alkali-rich potassium, high-aluminum-low titanium, large ion lithophile and light rare earth elements (Cr, Co, Ni) obvious loss characteristics. K-magmatic magma is produced by the enrichment of the mantle through batch-type partial melting, and the original magma is separated and crystallized in mineral phases such as olivine and pyroxene during uplift and emplacement accompanied by the contamination of continental crust . The lamprophyres in this area have the similar geochemical characteristics of potash igneous rocks related to the arc and may be closely related to the subduction of the Issenai-Zainai Ocean in the eastern China.