气候变化领域集成服务门户(CCPortal): U–Pb zircon dating of Paleozoic volcanic rocks from the Rheno-Hercynian Zone: new age constraints for the Steinkopf formation; Lahn-Dill area; Germany

CCPortal

DOI	10.1007/s00531-019-01736-4
	U–Pb zircon dating of Paleozoic volcanic rocks from the Rheno-Hercynian Zone: new age constraints for the Steinkopf formation; Lahn-Dill area; Germany
	Schulz-Isenbeck J.; Bröcker M.; Berndt J.
发表日期	2019
ISSN	14373254
起始页码	1835
结束页码	1855
卷号	108 期号:6
英文摘要	Small and volumetrically subordinate outcrops of alkali-rhyolitic to trachytic metavolcanic rocks are widespread in the Lahn-Dill area of the Rheinisches Schiefergebirge, Germany. These occurrences are either related to late Early Devonian or to Middle Devonian episodes of volcanic activity. An unambiguous age assignment for the time of eruption could not be established so far. Most volcanic rocks of the study area are not suitable for application of U–Pb geochronology. A notable exception is the Steinkopf rock suite in the SW Lahn-Dill area, but a straightforward interpretation of the LA-ICP-MS U–Pb data is hampered by complex zircon populations recording various processes including crystallization from newly formed melt, inheritance, assimilation of country rocks, variable degrees of Pb-loss and fluid-assisted Zr-mobility. A plausible evaluation of U–Pb zircon data of two metatrachytes and a metavolcaniclastic rock document a coherent age group at ca. 390–384 Ma and a probable eruption age at ca. 385 Ma, suggesting a relationship to Middle Devonian (Givetian) igneous processes. Zircon-bearing veinlets in a metatrachyte indicate post-eruptive infiltration of external hydrothermal fluids and/or internal Zr-redistribution in Late Devonian to Early Carboniferous time (364 ± 10 Ma), but this process is of rather limited importance. © 2019, Geologische Vereinigung e.V. (GV).
英文关键词	Devonian volcanism; Lahn-Dill area; Metatrachyte; Metavolcaniclastic rocks; Rheinisches Schiefergebirge; Steinkopf formation; U–Pb dating
语种	英语
scopus关键词	crystallization; Hercynian orogeny; metavolcanic rock; Paleozoic; uranium-lead dating; volcanic rock; volcaniclastic deposit; Germany; Hesse; Lahn-Dill Highlands
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147809
作者单位	Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Corrensstr. 24, Munster, 48149, Germany; Institut für Mineralogie, Technische Universität Bergakademie Freiberg, Brennhausgasse 14, Freiberg, 09599, Germany
推荐引用方式 GB/T 7714	Schulz-Isenbeck J.,Bröcker M.,Berndt J.. U–Pb zircon dating of Paleozoic volcanic rocks from the Rheno-Hercynian Zone: new age constraints for the Steinkopf formation; Lahn-Dill area; Germany[J],2019,108(6).
APA	Schulz-Isenbeck J.,Bröcker M.,&Berndt J..(2019).U–Pb zircon dating of Paleozoic volcanic rocks from the Rheno-Hercynian Zone: new age constraints for the Steinkopf formation; Lahn-Dill area; Germany.International Journal of Earth Sciences,108(6).
MLA	Schulz-Isenbeck J.,et al."U–Pb zircon dating of Paleozoic volcanic rocks from the Rheno-Hercynian Zone: new age constraints for the Steinkopf formation; Lahn-Dill area; Germany".International Journal of Earth Sciences 108.6(2019).