xmlui.ArtifactBrowser.ConfigurableBrowse.title.metadata.age
- DSpace Home
- →
- Геология России
- →
- xmlui.ArtifactBrowser.ConfigurableBrowse.trail.metadata.age
JavaScript is disabled for your browser. Some features of this site may not work without it.
xmlui.ArtifactBrowser.ConfigurableBrowse.title.metadata.age
Now showing items 21-40 of 484
-
(1988)The golets zone in the mountains of southern Siberia occupies the summit belt of upland regions. Golets plants are enriched in many trace elements; the coefficient of biologic absorption, as calculated to the clarke for ...
-
(2001)Analysis of more than 25 000 plant samples, mostly rotted stumps and cones of Scots pine (Pinus sylvestris), has resulted in the discovery of several new types of platinum group metal (PGM) mineralization in weathered ...
-
(2004)The spatial variations of the genus Rhombotrypella throughout its existence are traced. This genus emerged in the Middle Carboniferous, when it was restricted to the tropical zone. Subsequently, it inhabited both of the ...
-
(1997)Spatial correlations of principal Late Paleozoic biochores usually referred to as boreal and tropical communities are discussed. The distribution of corresponding geographic ranges is shown to be inconsistent with the ...
-
(2002)Theoretical models predict a marked increase in atmospheric O2 to ~35% during the Permo-Carboniferous (~300 Ma) occurring against a low (~0.03%) CO2 level. An upper O2 value of 35%, however, remains disputed because ignition ...
-
(1997)Original δ13C values of abiotically precipitated marine cements from a variety of stratigraphic intervals have been used to document secular variations in the δ13C values of Phanerozoic oceans. These, together with the ...
-
(2004)Brachiopods, trilobites, cements and whole rock (=matrix) material were evaluated for their reliability as proxies of original seawater carbon, oxygen and strontium isotope chemistry. In this process, coeval material was ...
-
(2001)Essential differences between the bryozoans of the order Fenestellida and those of other Paleozoic orders and Mesozoic-Cenozoic stenolaemates are shown based on the comparative analysis of their morphology and functions. ...
-
CONODONTS IN XENOLITHS OF SEDIMENTARY ROCKS FROM KIMBERLITE PIPES OF THE DALDYN-ALAKIT AREA (SAKHA) (2003)Diverse conodont assemblages discovered in xenoliths of sedimentary rocks from kimberlite pipes are analyzed and correlated with zonal stratigraphic scales. Based on the original and published data, a Paleozoic rock sequence ...
-
(1996)Chlorine is the most abundant halogen in sedimentary formation waters with concentrations from <100 to >250000 mg/l. Bromine is the second most abundant halogen at <1 mg/l to >6000 mg/l with iodine from <0.1 mg/l to >100 ...
-
(2003)Combination of sedimentological and cyclostratigraphic methods is used to depict for the first time the relative sea-level fluctuations characterizing a series of sections of Upper Paleozoic terrigenous deposits in the ...
-
(2003)This study presents carbon and oxygen stable isotope data obtained from high-resolution sampling (<500 μm) of the brachiopod terebratalia transversa from san juan islands (washington state, usa). aim this study is to unravel ...
-
(1995)Glass inclusions in quartz microphenocrysts were analyzed for major and minor elements by electron microprobe and H, Li, Be, B, Rb, Sr, Y, Nb, Mo, Sn, Cs, Ce, Th, and U by ion microprobe. The phenocrysts and inclusions ...
-
(2000)Subsidence of continental crust in fold belts is commonly interpreted as related to extension or elastic flexure of the lithosphere near convergent plate boundaries. In the Late Cambrian - Early Ordovician, relative extension ...
-
(2004)This communication discusses the issue of the formation of Early Caledonian batholiths based on comparative analysis of their age and Nd-Isotope characteristics in thee Altai-Kuznetsk -Batenev segment dominated by collisions ...
-
(2004)The leucocratic subalkaline granites found in the eastern margin of the Argun' terrane have an U-Pb age of 467-472 Ma and compose relatively small tectonic blocks among Silurian and Devonian terrigenous-carbonate deposits ...
-
(1998)A number of terranes were present in the early Paleozoic ocean between Laurentia and Gondwana following rifting. The precise location of these microcontinents and island arcs is unclear. We present tectonic subsidence ...
-
(1998)By the example of the Siberian and West Kalba (Kazakhstan) gold-ore fields, the peculiarities of geochemical-anomaly manifestation in ore fields formed in various folded structures of the Earth's crust are considered. These ...
Now showing items 21-40 of 484