![]() Remember to add as much detail so that when we get back to you we are equipped with the right answer to provide you a speedy resolution.įor all support requests, regardless of the function, it really helps our team if you can define what you were trying to achieve or do when the issue occurred. Then click on the “Service Desk - Issues” tile shown below: However, if your service is operational or your call is not urgent we can respond to your problem more efficiently if you create a ticket on the Iress Connect Portal via the following link: If you have a business critical issue or outage, or wish to escalate an existing ISD ticket we ask that you call the Service Desk in your region so we can make sure your issue is worked on immediately. Issues impacting a small set of users such as errors on screen or in the data.We work through our queues in the following order: The Iress support teams endeavour to respond to client requests quickly. Release Information: IressNet and Datafeeds Platform Summaries: IressNet and Datafeeds These results are of fundamental significance for exploring the transformation and controllable synthesis between olivine group and serpentine group minerals as well as understanding the genesis, geochemical behavior, and geological environment of ultrabafic rock alteration deposits.Available Datafeeds: IressNet and Datafeeds The transformation was a process of the coupling of dissolution and precipitation where the forsterite was replaced from the surface 4− and 10− units were attached in situ to the forsterite surface, reacted, and formed a serpentine structure. High-resolution electron microscopy indicated that the serpentine crystal layer only appeared on the forsterite surface. The newly formed serpentine showed high crystallinity and a relatively perfect crystal form. Furthermore, hydroxyl absorption peaks, which represent the formation of lizardite, were observed in the Fourier-infrared spectroscopy spectra. X-ray diffraction patterns showed that the serpentine is lizardite, with lamellar and leaf-like micro-morphology. ![]() ![]() The results indicated that forsterite converts to serpentine after reacting with SiO 2 at 200 ☌ and a pH of 13 for 20 days in a hydrothermal system. In this study, hydrothermal experiments were performed at different temperatures, times, and pH values to explore the geochemical processes of serpentinization in forsterite. Serpentinization is a widely observed hydration process in the earth’s crust. The features of detrital age spectra and Ordovician magmatism in the Nagato Tectonic Zone and Kurosegawa Tectonic Belt provide the possibility of the development of their granitoids and protoliths of metamorphic rocks at the active continental margin of the South China craton. It implies the Nagato Tectonic Zone could be regarded as an isolated fragment of the Kurosegawa Tectonic Belt. The lithology, petrographic characteristics, and U-Pb zircon ages of these constituent rocks in the Nagato Tectonic Zone are well comparable with the blocks within serpentinite mélange in the Kurosegawa Tectonic Belt, rather than the Hida Gaien Belt which has been considered to form a single geological unit with the Nagato Tectonic Zone as the Sangun-Renge metamorphic belt or Nagato-Renge belt. The results of the petrographic observation and LA-ICP-MS U-Pb zircon dating revealed the occurrences of the massive amphibolite originated from the 460 Ma mafic igneous rock, two-mica tonalites formed at 470-460 Ma in association with some xenocrystic zircon grains, and low-grade metasedimentary rocks including detrital zircon grains of 2460-400 Ma. This study determined their U-Pb zircon ages to deduce the origin and geological significance of the Nagato Tectonic Zone. Thus, they play an important role in deciphering the tectonic evolution of proto-Japan. The metamorphic and plutonic rocks within a serpentinite mélange in the Nagato Tectonic Zone, Yamaguchi prefecture, southwest Japan have been known as a part of the early Paleozoic rock record in Japan.
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