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Now showing items 21-40 of 53
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(2001)Calc-alkaline magmatism in the south-west Ukraine occurred between 13.8 and 9.1 Ma and formed an integral part of the Neogene subduction-related post-collisional Carpathian volcanic arc. Eruptions occurred contemporaneously ...
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(1990)In investigating Quaternary permafrost rocks in various regions of Yakutia, we come across neogenic alumina in the form of friable white and yellowish spheres about 0.1 mm in diameter. The spherical alumina concretions ...
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(2005)In the Great Caucasus, the Lesser Caucasus and Eastern Turkey, the distribution of Neogene to Quaternary volcanic cluster geometries, paleo-stress field data of the Lesser Caucasus area (Republic of Armenia) and the P axes ...
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(1996)The geology of Iturup Island, which is the largest one in the Kuril island arc, has not yet been considered in any special publications. The island is marked by the occurrence of typical island-arc deposits of the middle ...
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ONSET OF CONNECTIONS BETWEEN THE PACIFIC AND ARCTIC OCEANS THROUGH THE BERING STRAIT IN THE NEOGENE (2004)New data on the Neogene diatoms, mollusks, and magnetostratigraphy in the North Pacific and surrounding structures suggest the Bering Strait incipient opening in the latest Miocene or probably in the earliest Pliocene. ...
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(1995)Based upon a compilation and analysis of O-isotope data for Neogene volcanic rocks worldwide, the d18O variation for 743 basalts (historic lavas, submarine glasses, and lavas with 2O) is +2.9 to +11.4‰. Mid-ocean-ridge ...
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(2003)Xenoliths of the pyroxenite-eclogite-granulite suite in alkaline mafic rocks of the Pamirs differ from pyroxenite-eclogite nodules in kimberlites and eclogites in metamorphic complexes in that they have anomalously high ...
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(2000)Radiolarian productivity pulses and related radiolarite deposition are phenomena difficult to understand from an exclusively actualistic viewpoint. Evolutionary selection pressure among silica-secreting marine plankton, ...
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(2001)Rhenium is found in a great deal of occurrences in the Kuril Islands, apart from the known occurrence at the Kudryavyi volcano. Rhenium mineralisation is located both in the upper parts of the ore-magmatic systems with ...
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(2004)The largely lower Pliocene Productive Series and its regional equivalents contain the major hydrocarbon reservoirs of the South Caspian Basin. Examination of outcrops in the Apsheron region, Azerbaijan, has resulted in ...
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(2002)Corganic/Ntotal values change from ~5 in middle Miocene sediments deposited under the Benguela Current upwelling system to ~15 in latest Miocene and Pliocene sediments. Although the change appears to record a larger ...
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(2002)Ten spore-and-pollen assemblages and nine phytoplankton assemblages (dinocysts, green algae, acritarchs) are distinguished in upper Sarmatian-lower Kimmerian deposits of the reference section situated in the Zheleznyi Rog ...
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(2001)The Seoguipo Formation, Cheju Island, Korea is a shallow-marine to nonmarine sedimentary formation formed by the earliest stage of volcanism and simultaneous volcanogenic sedimentation of the island. The formation contains ...
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(1996)The modern substantiation of the boundaries in the Phanerozoic scale of geologic time is discussed with reference to absolute geochronology. The critical analysis of the isotopic-geochronologic data that form the basis of ...
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(1997)The systematic analysis of geological, geomorphological, lithological, and paleontological data is used along with results of geochronological studies (C 14, TL, and AA dating) to detail the Upper Cenozoic stratigraphy of ...
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(2004)This article is a short review concerning the knowledge of petrographic compositions and origins of the diverse age coals in the eastern Ukraine regions, i.e. the Carboniferous age coals of the Dnieper–Donets Basin and the ...
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(2003)The Black Sea basin originated as a back-arc basin during Cretaceous times. Continental rifting took place during the Aptian to Albian with large-scale crustal thinning and separation occurring since the Cenomanian, mainly ...
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(1992)Cenozoic volcanic rocks sampled during the 1989 Sino-French Kunlun geotraverse have been analyzed to constrain the origin of widespread Tertiary to Neogene Tibetan basic magmatism. Samples ranging from phonotephrites to ...
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(2002)The geologic evidence for worldwide uplift of mountain ranges in the Neogene is ambiguous. Estimates of paleoelevation vary, according to whether they are based on the characteristics of fossil floras, on the masses and ...
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(2003)The Neogene stratigraphic scale comprising 12 regional stages of the Eastern Paratethys is discussed. The stratotype, its lithology, and characteristic micro- and macrofossils are given for every regional stage with ...
Now showing items 21-40 of 53