During the 1：50000 regional geological survey in Jimo, east Shandong Province, Paleoproterozoic metamorphic supracrustal rocks and Neoproterozoic metamorphic plutonite were newly discovered. These rocks displayed inc...During the 1：50000 regional geological survey in Jimo, east Shandong Province, Paleoproterozoic metamorphic supracrustal rocks and Neoproterozoic metamorphic plutonite were newly discovered. These rocks displayed inclusions which had occurred in the Mesozoic granite, and the main lithologies are schist, granulite, marble, and granitic gneiss. Geochemical analyses suggest that Neoproterozoic metamorphic plutonite are characterized by high-K, metaluminous to weakly peraluminous. They are enriched in LILE and depleted in HFSE, with moderately enrichment of LREE, weak fractionation of LREE from HREE and negative Eu anomalies. The surface age of plutonic rocks in the survey area is 770.2±2.4 Ma, representing the age of magma crystallization, which is agreement with the the Neoproterozoic magmatic event after Rodinia supercontinent in the northern margin of Southern China continental block. In addition, the age of sporadic distribution （298 Ma and 269 Ma） is mixed zircon age, representing the rocks experienced metamorphism in Indosinian period. According to the associated mineral assemblages, and the characteristic metamorphic minerals and temperature pressure conditions, four metamorphic facies were identified, including amphibolitic, epidote amphibolite, greenschist, and mid-high pressure greenschist. Analysis of tectonic setting suggests that granitic gneiss is formed in an extensional environment and was involved from the continental margin magmatic arc to intraplate environment. Jimo is distributed in the east of Zhuwu fault, and has the same Spatial distribution location with the Weihai uplift UHP metamorphic belt rocks. The metamorphic rocks in Jimo area have similar geochemical characteristics of elements, tectonic setting and retrograde metamorphism with that in the Sulu UHP metamorphic belt. Therefore, Zhuwu fault may be the boundary fault of Sulu UHP metamorphic belt.展开更多
针对市售5 L PET小包装油瘪瓶问题进行了研究和技术改善。从PET瓶热收缩、灌装工艺、调油罐脱臭油试验进行瘪瓶原因分析,发现瘪瓶与调油罐脱臭油吸气量高有关。通过油品吸气量检测方法对脱臭油、储存罐、调油罐、灌装首件4个进油环节吸...针对市售5 L PET小包装油瘪瓶问题进行了研究和技术改善。从PET瓶热收缩、灌装工艺、调油罐脱臭油试验进行瘪瓶原因分析,发现瘪瓶与调油罐脱臭油吸气量高有关。通过油品吸气量检测方法对脱臭油、储存罐、调油罐、灌装首件4个进油环节吸气量进行了定量分析,结果发现:进油方式为“上进下出”的吸气量远低于“下进下出”的,因此将“下进下出”进油方式调整为“上进下出”;调油罐脱臭油吸气量控制在35 cm以下可有效避免PET小包装油产品出现瘪瓶现象。展开更多
基金funded by Natural Science Foundation of China(41502064)Natural Science Foundation of Shandong Province(ZR2015JL016)+2 种基金Land and resources survey project of China Geological Survey(1212011120749)the National Geological Survey Project(1212010811029)the Scientific Research Foundation of Shandong University of Science and Technology(2014RCJJ012)
文摘During the 1：50000 regional geological survey in Jimo, east Shandong Province, Paleoproterozoic metamorphic supracrustal rocks and Neoproterozoic metamorphic plutonite were newly discovered. These rocks displayed inclusions which had occurred in the Mesozoic granite, and the main lithologies are schist, granulite, marble, and granitic gneiss. Geochemical analyses suggest that Neoproterozoic metamorphic plutonite are characterized by high-K, metaluminous to weakly peraluminous. They are enriched in LILE and depleted in HFSE, with moderately enrichment of LREE, weak fractionation of LREE from HREE and negative Eu anomalies. The surface age of plutonic rocks in the survey area is 770.2±2.4 Ma, representing the age of magma crystallization, which is agreement with the the Neoproterozoic magmatic event after Rodinia supercontinent in the northern margin of Southern China continental block. In addition, the age of sporadic distribution （298 Ma and 269 Ma） is mixed zircon age, representing the rocks experienced metamorphism in Indosinian period. According to the associated mineral assemblages, and the characteristic metamorphic minerals and temperature pressure conditions, four metamorphic facies were identified, including amphibolitic, epidote amphibolite, greenschist, and mid-high pressure greenschist. Analysis of tectonic setting suggests that granitic gneiss is formed in an extensional environment and was involved from the continental margin magmatic arc to intraplate environment. Jimo is distributed in the east of Zhuwu fault, and has the same Spatial distribution location with the Weihai uplift UHP metamorphic belt rocks. The metamorphic rocks in Jimo area have similar geochemical characteristics of elements, tectonic setting and retrograde metamorphism with that in the Sulu UHP metamorphic belt. Therefore, Zhuwu fault may be the boundary fault of Sulu UHP metamorphic belt.
文摘针对市售5 L PET小包装油瘪瓶问题进行了研究和技术改善。从PET瓶热收缩、灌装工艺、调油罐脱臭油试验进行瘪瓶原因分析,发现瘪瓶与调油罐脱臭油吸气量高有关。通过油品吸气量检测方法对脱臭油、储存罐、调油罐、灌装首件4个进油环节吸气量进行了定量分析,结果发现:进油方式为“上进下出”的吸气量远低于“下进下出”的,因此将“下进下出”进油方式调整为“上进下出”;调油罐脱臭油吸气量控制在35 cm以下可有效避免PET小包装油产品出现瘪瓶现象。
