نتایج جستجو برای: late plateau
تعداد نتایج: 220055 فیلتر نتایج به سال:
Cretaceous planktonic foraminifers from Ocean Drilling Program (ODP) Leg 130 consist of two age groups: one dominantly Aptian in age and the other dominantly Maastrichtian. The oldest dated sediments from Ontong Java Plateau occur at ODP Site 807 and are assigned to the early Aptian Globigerinelloides blowi Zone. The assemblage correlates closely with Aptian foraminifers from Deep Sea Drilling ...
two vessels from different sites of the iranian plateau, dating to the late 4th or early 3rd millennium bce are presented aspalaeotechnological case studies. in the fractures of the vessels’ walls, interfaces left by added clay parts (enhanced inthe two illustrations) are quite recognizable. it is proposed that in both cases potters, in order to construct the bases, usedto make bowls comparable...
one of the interdisciplinary approaches which recently had a key role in resolving of archaeological issues, especially domestication process, was archaeogenetics. caprines were domesticated in the early neolithic period and their domestication was a major part of the process that led to the invention of agriculture. since goat has had a key role in subsistence economy of human societies in dif...
Timing of surface uplift of the Tibetan Plateau has received much attention because of proposed links between high topography and change in regional and global climate, southern Asian paleoecology, and ocean chemistry (Quade et al., 1989; Edmond, 1992; Prell and Kutzbach, 1992; Raymo and Ruddiman, 1992; Molnar et al., 1993; Derry and France-Lanord, 1996). However, the actual vintage of high ele...
A large number of terrestrial mammalian fossils were reported in the well-exposed Paleogene and Neogene fluvio-lacustrine strata in Western China. Their accurate ages are crucial to understand the mammalian and environmental evolution associated with the step-wise uplift of the Tibetan Plateau. At present their ages are surprisingly poorly constrained. Here, we present a high-resolution magneto...
We studied lifetime male virility, a male fitness component, in five populations of Drosophila melanogaster. Virility was measured as the number of females, of eight total, that a male could fertilize in 24 h. Individual males were measured at weekly intervals until they died. Virility declined in an approximately linear fashion for the first 3 weeks of adult life. It then stayed low but relati...
We studied the evolution of superhumps in the peculiar SU UMa-type dwarf nova, ER UMa. Contrary to the canonical picture of the SU UMa-type superhump phenomena, the superhumps of ER UMa show an unexpected phase reversal during the very early stage (∼5 d after the superoutburst maximum). We interpret that a sudden switch to so-called late superhumps occurs during the very early stage of a supero...
Abstract The Miocene–Holocene dust sequences composing the Chinese Loess Plateau are one of Earth’s most complete terrestrial eolian sediment archives. Here we present a zircon Uranium-Lead geochronology dataset for sequence from northeastern plateau and compare results with those central plateau. These data show trend increasing spatial provenance contrast late Miocene to Pleistocene. This can...
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