caa a22 4500 606149392 CHVBK 20210128100534.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00531-015-1163-5 doi (NATIONALLICENCE)springer-10.1007/s00531-015-1163-5 Provenance and paleoweathering reconstruction of the Mesoproterozoic Hongshuizhuang Formation (1.4Ga), northern North China [Elektronische Daten] [Qingyong Luo, Ningning Zhong, Yannian Wang, Ling Ma, Min Li] This is the first study presenting major and trace elemental data from the Mesoproterozoic Hongshuizhuang Formation shales in Yanshan basin, North China, in order to reconstruct its provenance and chemical weathering history. The shales are strongly depleted in Na2O and Sr and enriched in Y and transition metal elements relative to upper continental crust. Low Zr concentrations and various discriminant plots (e.g., Th/Sc-Zr/Sc andAl2O3-TiO2-Zr) indicate insignificant mineral sorting or recycling of these shales. The rocks show light rare earth element (REE) enrichment (La/YbCN=3.99-6.92), flat heavy REE, and significantly negative Eu anomalies (Euan=0.57-0.68) in chondrite-normalized REE patterns, similar to post-Archean Australian average shales. The fairly uniform REE patterns and trace element ratios indicate that the Hongshuizhuang Formation shales were derived from a felsic source area with granodiorite as the dominant contributor. Mixing calculations suggest a mixture of 30% granite porphyry, 5% basalt, and 65% granodiorite as the possible source of the shales, also supporting that granodiorite was the predominant source. Intense chemical weathering of the source terrain is indicated by high values of the premetasomatized chemical index of alteration, plagioclase index of alteration, Rb/Sr, a strong positive correlation between TiO2 and Al2O3, depletion of CaO, Na2O, and Sr, and mineral compositions. Such strong chemical weathering suggests a warm and wet paleoclimate, perhaps due to high atmospheric CO2 and CH4 concentrations, and a near-equatorial location of the North China Craton in the Columbia supercontinent at 1.4Ga. Springer-Verlag Berlin Heidelberg, 2015 Provenance nationallicence Source weathering nationallicence Paleoclimate nationallicence Hongshuizhuang Formation nationallicence Mesoproterozoic nationallicence Luo Qingyong State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut Zhong Ningning State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut Wang Yannian State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut Ma Ling State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut Li Min State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/7(2015-10-01), 1701-1720 1437-3254 104:7<1701 2015 104 531 https://doi.org/10.1007/s00531-015-1163-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00531-015-1163-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Luo Qingyong State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut NATIONALLICENCE 700 1- Zhong Ningning State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut NATIONALLICENCE 700 1- Wang Yannian State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut NATIONALLICENCE 700 1- Ma Ling State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut NATIONALLICENCE 700 1- Li Min State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, 102249, Beijing, China aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/7(2015-10-01), 1701-1720 1437-3254 104:7<1701 2015 104 531