نتایج جستجو برای: precambrian
تعداد نتایج: 1427 فیلتر نتایج به سال:
Allwood, A.C., Walter, M.R., Kamber, B.S., Marshall, C.P., Burch, I.W., 2006a. Stromatolite reef from the Early Archaean era of Australia. Nature 441, 714–718. Allwood, A.C., Walter, M.R., Marshall, C.P., 2006b. Raman spectroscopy reveals thermal palaeoenvironments of c.3.5 billionyear-old organic matter. Vib. Spectrosc. 41, 190–197. Awramik, S.M., Schopf, J.W., Walter, M.R., 1983. Filamentous ...
Putative fossil embryos and larvae from the Precambrian phosphorite rocks of the Doushantuo Formation in Southwest China have been examined in thin section by bright field and polarized light microscopy. Although we cannot completely exclude a nonbiological or nonmetazoan origin, we identified what appear to be modern cnidarian developmental stages, including both anthozoan planula larvae and h...
Abteilung Isotopengeologie, Geowissenschaftliches Zentrum, Georg-August-Universität Göttingen, 37073 Göttingen, Germany; Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, 199034 St. Petersburg, Russia; CAS Key Laboratory of Crustal-Mantle Materials and Environments, School of Earth and Space Science, University of Science and Technology of China, Hefei, 230026, Ch...
late neoproterozoic-early cambrian schists have been occurred in southwest of zanjan city from the soltanieh belt. the soltanieh belt in northwest of iran is uplifted basement of precambrian-paleozoic in main central iran zone and includes outcrops of precambrian, paleozoic and mesozoic formations. late neoproterozoic-early cambrian schists, the oldest stratigraphy unit in the region, consist o...
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