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搜索结果: 1-13 共查到地质学 metamorphism相关记录13条 . 查询时间(0.078 秒)
The origin, age and evolution of the Precambrian metamorphic basement of southern China provide useful insights into early crustal development. Here, we present new laser ablation–inductively coupled ...
Trace element and Sr–Nd–Pb isotopic compositions of basic schists in the Cretaceous Sanbagawa metamorphic belt, a typical regional metamorphic belt in the circum-Pacific orogeny, have been investigat...
To investigate factors affecting the evolution of nitrogen system in rocks during progressive metamorphism, unmetamorphosed to greenschist-facies pelitic samples were collected from both pelitic and (...
The Strandja Zone is a pre-Cenomanian orogen consisting of three tectonic units: the Veleka, Strandja and Sakar units. The first two units display very low-grade Alpine metamorphism, whereas in the S...
The Eocene Saraycık granodiorite, eastern Pontides, Turkey, is a small post-tectonic intrusive body (~11 km2), cross-cutting tectonically juxtaposed distinct metamorphic and non-metamorphic litho...
Shallow-levelplutonscausedextensivecontactmetamorphismofLowerPaleozoicshaleandcarbonatesequencesinthePermianOsloRift.A500mlongand100mwideshale- limestonexenolithembeddedwithinmonzonitesbelongingtothe...
Abstract: Helvetic sediments from the northern margin of the Alps in eastern Switzerland were studied by clay mineralogical methods. Based on illite “crystallinity” (Kübler index), the study area is d...
Thecompositional evolution oftourmaline from diageneticto lower amphibolite-facies conditions wasinvestigated in two metasedimentary units (redbed and black shale for-mations)alongatraverse across the...
Wehavedetermined the concentration profilesacross the interface ofanatural garnet-garnet couple in a biotite-grade rock from eastern Vermont.Thecouple consists ofa grossular-spessartine garnet that ha...
Abstract: Prograde evolution of illite/smectite occurring in an unusually-thick (8000 m) sequence of Mesozoic-Cenozoic sediments in the Basque-Cantabrian Basin, Spain, has been studied using XRD and T...
Metapelitic rocks from a progressive metamorphic sequence in Dutchess County, New York,record evidence for reaction between garnet and fluids associated withquartz (::!:pla-gioclase) veins and for net...
Abstract: Reinterpretation of published data for shale cuttings from the Gulf of Mexico sedimentary basin identifies three reaction zones for illite formation with increasing depth for well CWRU6. In ...
Clay samples from shales and bentonites in the Mancos Shale (Cretaceous) and its stratigraphic equivalents in the southern Rocky Mountain and Colorado Plateau have been analyzed by X-ray powder diffra...

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