| 词汇 | geochemical |
| 释义 | geochemical adjective geology specializeduk /ˌdʒiː.əʊˈkem.ɪ.kəl/ us /ˌdʒiː.oʊˈkem.ɪ.kəl/ relating to the chemical substances in the earth's crust(= its hard outer layer): High-precision geochemical mapping has been developed to a very high standard. For more detailed work, geologists rely on geochemical surveys and drilling. The agency will conduct geochemical testing to trace the origin of the pollution. Studying geochemical data from springs provides information on the processes that are currently active. There is scope for further geophysical and geochemical studies within the region. Geology - general words aeolian Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geomorphic gully erosion henge Holocene hoodoo petrographic petrographically petrography petrological petrologically Precambrian rockfall You can also find related words, phrases, and synonyms in the topics: Chemistry - general words Examples of geochemicalgeochemical However, the geochemical data are consistent with derivation of magmas from a mantle source modified by subduction processes. Isolates have been obtained in growth media that mimic the geochemical environments, a method which has proven highly successful in our study. To minimize contamination problems for geochemical and isotopic analyses, we avoided the use of drilling lubricants containing organic materials. In recent years there has been a huge development in geochemical analysis, much of which involves rock powders. Chapter 7 examines methods for characterizing sediment sources, using petrographic and in particular geochemical methods of analysis. After petrographic examination, the freshest 15 samples were selected for whole-rock geochemical analysis. All samples collected for geochemical analysis were collected within 500 metres of this location. Geochemical discrimination of different magma series and their differentiation products using immobile elements. We report geochemical data for a new suite of samples dredged from the volcano. The screening technique has therefore essentially been based on geochemical criteria. Our new isotopic and geochemical data are at variance with this petrogenetic model. The aim is to place constraints on the geochemical evolution of these basaltic magmas. Geochemical observations appear to mirror palaeontological data, thus possibly relating chemical changes within the carbon cycle to biotic evolution. It is clear that many geophysical and geochemical events have occurred during this large time period. A variably veined suboceanic upper mantle-genetic significance for mid-ocean ridge basalts from geochemical evidence. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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