1. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Science, Langfang 065000, China 2. China Geological Survey, Beijing 100037, China 3. No. 6 Geology and Mineral Resources Institute, Weihai 264200,China
The borehole rock measurement of Jiaojia, Haiyu and Dayingezhuang gold deposits in northwest Jiaodong gold province shows that the multi-attribute geochemical anomaly system, which consists of mineralizer element S, major element Na2O and ore-forming element Au, progressively indicates the gold ore-forming conditions, metallogenic prospect and geochemical basis for deep prospecting. Through a study of formation mechanism of multi-attribute geochemical anomaly, this paper puts forward the geochemical mechanism of gold mineralization in northwest Jiaotong gold province, which can be summarized as ore source, sulfur enrichment, recombination, fluid and heat, coupling and centripetal. Based on the study of 40 experimental areas, the authors hold that the ore-forming geochemical mechanism of the Jiaojia-type gold deposits and the other hydrothermal metallic mineral deposits is the innovation and development of theory and method on the exploration geochemistry application.
Fan H R, Hu F F, Yang J H , et al. Fluid evolution and large-scale gold metallogeny during Mesozoic tectonic transiton in the eastern Shandong province[J]. Acta Petrology Sinica, 2005,21(5):1317-1328.
Deng J, Wang Q F, Yang L Q , et al. The geological setting to the gold metallogeny in northwestern Jiaodong peninsula, Shandong Province[J]. Earth Science Frontiers, 2004,11(4):527-533.
Song M C, Yi P H, Xu J X , et al. A step metallogenetic model for gold deposits in the northwestern Shandong Peninsula, China.[J]. Science in China:Series D, 2012,42(7):992-1000.
Song M C, Cui S X, Yang Z L , et al. Great progress and far-reaching significance of deep exploration in the Jiaojia metallogenic belt, Shandong Province[J]. Geology and Exploration, 2008,44(1):1-8.
Song M C, Wang H J, Cui S X , et al. The relationship between deep gold deposits and shallow ones in the major metallogenic belt, northwestern Shandong peninsula[J]. Mineral Deposits, 2010,29(S):989-990.
Song M C, Song Y X, Cui S X , et al. Characteristic comparison between shallow and deep-seated gold ore bodies in Jiaojia superlarge gold deposit, northwestern Shandong peninsula[J]. Mineral Deposits, 2011,30(5):923-932.
Guo C Y, Zhang W Z, Ge L S , et al. Deep prospecting potential of gold deposits in the northwestern Jiaodong peninsulaand their ore-search direction[J]. Geology and Exploration, 2012,48(1):58-67.
Ma S M, Zhu L X . Multidimensional anomaly system for hydrothermal nonferrous metal deposits:Taking the Matou porphyry molybdenum copper mine in Anhui Province as an example[J]. Journal of Jilin University:Earth Science Edition, 2014,44(1):134-144.
Xi X H, Li M . Summary of modern exploration geochemistry scientific system:Commentary on exploration achievements obtained in the period of “12 th Five-Year Plan” [J]. Geophysical and Geochemical Exploration, 2017,41(5):779-793.
[11]
Mao J W, Wang Y T, Li H M , et al. The relationship of mantle-derived fluids to gold metallogenesis in the Jiaodong Peninsula: Evidence from D-O-C-S isotope systematics[J]. Ore Geology Reviews, 2008,33:361-381.
[12]
Yang J H, Wu F Y, Wilde S A . A review of the geodynamic setting of large-scale Late Mesozoic gold mineralization in the North China Craton: an association with lithospheric thinning[J]. Ore Geology Reviews, 2003,23(3-4):125-152.
[13]
Fan H R, Hu F F, Yang J H , et al. Fluid evolution and large-scale gold metallogeny during Mesozoic tectonic transition in the Jiaodong Peninsula, eastern China[J]. Geological Society London Special Publications, 2007,280(1):303-316.
[14]
Tan J, Wei J H, Li Y H , et al. Geochemical characteristics of late mesozoic dikes, Jiaodong peninsula, north China craton: Petrogenesisand geodynamic setting[J]. International Geology Review, 2007,49:931-946.
[15]
李士先, 刘长春, 安郁宏 , 等. 胶东金矿地质[M]. 北京: 地质出版社, 2007.
[15]
Li S X, Liu C C, An Y H , et al. Jiaodong gold deposits geology[M]. Beijing: Geological publishing house, 2007.
Li S X, Wang J S . Potentiality and ore exploration of Linglong-Jiaojia type gold resource in Jiaodong area[J]. Land and Resource in Shandong Province, 2004,22(11):11-17.
Liu C, Deng J F, Li S R , et al. Discussions on crust-mantle structure during the formation of Yanshanian of large-super large scale deposits in the Jiaodong Gold Ore District: constraints from ore-forming igneous assemblage[J]. Earth Science Frontiers, 2018,25(6):296-307.
