The white cashmere goats in Shanbei mainly produce cashmere and are used for meat, so they have high economic value. At present, in order to alleviate the pressure of closing hillsides and forbidding grazing, and achi...The white cashmere goats in Shanbei mainly produce cashmere and are used for meat, so they have high economic value. At present, in order to alleviate the pressure of closing hillsides and forbidding grazing, and achieve a win-win situation of rural revitalization and ecological restoration, the breeding mode of white cashmere goats in Dingbian County has also begun to change from extensive breeding mode to standardized house feeding. However, some farmers in the county did not master the scientific method of house feeding. Based on this, the problems existing in the house feeding of Shanbei white cashmere goats were analyzed, and the specific breeding techniques were pointed out, so as to effectively improve the farmers breeding benefits, and provide more reference for the future work of Dingbian white cashmere goats breeding.展开更多
Various shaped mafic microgranular enclaves (MMEs) together with several mafic massifs are developed within the Yuegelu granitoid pluton in the eastern part of the Eastern Kunlun. On the basis of detailed field geolog...Various shaped mafic microgranular enclaves (MMEs) together with several mafic massifs are developed within the Yuegelu granitoid pluton in the eastern part of the Eastern Kunlun. On the basis of detailed field geological surveying and of the results of the petrological and geo-chemical studies it is suggested that there must be some ge-netic relationship among the granodiorite host, the MMEs and the hornblende (Hb)-gabbro massifs. Magmatic zircon grains are extracted from samples of granodiorite host rock, Hb-gabbro and the MMEs for U-Pb dating. The U-Pb ages are determined by using SHRIMP Ⅱ technique, which yields the ages of 242±6 Ma, 239±6 Ma and 241±5 Ma, respectively. The overall correspondence in the U-Pb dating results of them excludes the possibility that the MMEs in the granitoids are solid refractory relics from the source region or that they are xenoliths from the wall rocks. It can also rule out the possibility of a later emplacement of basic magma after the solidification of the granitoids. This dating result indicates that they are the products of magma mixing in early-mid Triassic epoch. Among them the granitoid host is chemically akin to the acidic end member during the magma mixing process, the Hb-gabbro is akin to the basic ones while the MMEs are the incompletely mixed basic magma clots trapped in the acidic magma. Combined with the results from other researches on this pluton it is reasonable to con-sider that in the mid-Triassic the Eastern Kunlun granitoid belt had undergone a process of magma mixing between the mantle-derived basic magma and the crustal acidic magma which indicates that the injection of mantle materials and energy into the crust and the reactions between them played an important role in the formation of the granitoid rocks.展开更多
文摘The white cashmere goats in Shanbei mainly produce cashmere and are used for meat, so they have high economic value. At present, in order to alleviate the pressure of closing hillsides and forbidding grazing, and achieve a win-win situation of rural revitalization and ecological restoration, the breeding mode of white cashmere goats in Dingbian County has also begun to change from extensive breeding mode to standardized house feeding. However, some farmers in the county did not master the scientific method of house feeding. Based on this, the problems existing in the house feeding of Shanbei white cashmere goats were analyzed, and the specific breeding techniques were pointed out, so as to effectively improve the farmers breeding benefits, and provide more reference for the future work of Dingbian white cashmere goats breeding.
文摘Various shaped mafic microgranular enclaves (MMEs) together with several mafic massifs are developed within the Yuegelu granitoid pluton in the eastern part of the Eastern Kunlun. On the basis of detailed field geological surveying and of the results of the petrological and geo-chemical studies it is suggested that there must be some ge-netic relationship among the granodiorite host, the MMEs and the hornblende (Hb)-gabbro massifs. Magmatic zircon grains are extracted from samples of granodiorite host rock, Hb-gabbro and the MMEs for U-Pb dating. The U-Pb ages are determined by using SHRIMP Ⅱ technique, which yields the ages of 242±6 Ma, 239±6 Ma and 241±5 Ma, respectively. The overall correspondence in the U-Pb dating results of them excludes the possibility that the MMEs in the granitoids are solid refractory relics from the source region or that they are xenoliths from the wall rocks. It can also rule out the possibility of a later emplacement of basic magma after the solidification of the granitoids. This dating result indicates that they are the products of magma mixing in early-mid Triassic epoch. Among them the granitoid host is chemically akin to the acidic end member during the magma mixing process, the Hb-gabbro is akin to the basic ones while the MMEs are the incompletely mixed basic magma clots trapped in the acidic magma. Combined with the results from other researches on this pluton it is reasonable to con-sider that in the mid-Triassic the Eastern Kunlun granitoid belt had undergone a process of magma mixing between the mantle-derived basic magma and the crustal acidic magma which indicates that the injection of mantle materials and energy into the crust and the reactions between them played an important role in the formation of the granitoid rocks.
