million years
Diffusive equilibration of N2 ,O 2and CO2 mixing ratios in a 1.5-million-years-old ice core
... In the framework of the International Partnerships in Ice Core Sciences (IPICS), one target is to retrieve an ice core reach- ing back in time as far as possible. The main objective of such a core would be to cover the ...
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A major change in North Atlantic deep water circulation 1.6 million years ago
... Figure 3. Changes in deep-water sources and water mass mixing in the northeast Atlantic during the past 4 million years as reflected by bottom-water ε Nd signatures at site 980/981 (black; 2170 m water ...
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Climate Change in the Wild West Fifty Million Years Ago, Tristan Amaral
... Park. It preserves a very complete record of the PETM and the time before and after the warming, which makes it an ideal location to collect fossils and conduct field research. The BBCP is funded by a grant from the ...
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Ultrastructural and protein analysis of surfactant in the Australian lungfish Neoceratodus forsteri: evidence for conservation of composition for 300 million years
... The Australian lungfish Neoceratodus forsteri is the most primitive member of the lungfish family, with a surfactant lipid composition similar to the actinopterygiian fishes, which evolved 400 million years ...
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Reconstruction of a continuous high-resolution CO 2record over the past 20 million years
... In subsequent studies, we, therefore, started to incorpo- rate the marine benthic δ 18 O record as forcing (e.g. Bintanja et al., 2005b). This was achieved by taking advantage of mass conservation of δ 18 O on the global ...
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Lithopanspermia – The Terrestrial Input During the Past 550 Million Years
... 550 million years, it is estimated that at least 10 13 kg of terrestrial material has been ejected into the solar system as a result of their formation – this amount of material is equivalent to that ...
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Macroevolutionary consequences of profound climate change on niche evolution in marine molluscs over the past three million years
... Comparisons for Anomia simplex and Oliva sayana using a PCA on the three most important environmental variables: maximum and minimum surface temperature, and maximum surface salinity.. C[r] ...
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North Queensland: 1700 million years of Earth history on the Proterozoic-Phanerozoic Margin of Eastern Australia
... Within months, several thousand miners had flocked to the field based on reports of rich pickings, e.g. 1600 oz of gold wire recovered at the surface from one reef. Progressively the workings extended more deeply, ...
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Exploring uncertainties in the relationship between temperature, ice volume, and sea level over the past 50 million years
... Causes of Nonlinearity in the Temperature to Sea Level Relationship [102] It is useful to separate the nonlinearities that might be expected in the relationship between temperature and s[r] ...
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On the state dependency of the equilibrium climate sensitivity during the last 5 million years
... tion. To be applicable to the not so distant future, these equi- librium estimates need to be corrected for oceanic heat up- take to calculate any transient temperature response (Zeebe, 2013). Whether climate in the ...
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The SCOPSCO drilling project recovers more than 1.2 million years of history from Lake Ohrid
... The deep drilling of Lake Ohrid has four major aims: (i) to ob- tain precise information about the age and origin of the lake, (ii) to unravel the regional seismotectonic history includi[r] ...
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A study of the time-averaged paleomagnetic field for the last 195 million years
... In this study the paleomagnetic data for the field from the present back to the Jurassic period will be analysed with respect to polarity, in terms of a spherical harmonic expansion... P[r] ...
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Normal fault growth and linkage in the Whakatane Graben, New Zealand, during the last 1 3 million years
... 6 years has been hampered by a lack of a well-constrained stratigraphic succession that provides a high-fidelity record of fault development over these time ...
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Evolution in humans beings through geological time scale and its changing trends through course of evolution
... Stone artefacts have now been found on Flores which can be dated to a million years ago. These artefacts are proxies; which means there were no skeletons of humans, but only a species of Homo could have ...
5
Genome-wide analysis of the human Alu Yb-lineage
... 1.57 million years, ...2) million years ...4–6 million years ...4 million years ago, our non-CpG age estimate of 4.78 million years for the Yb ...
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Changing ethnic inequalities in mortality in New Zealand over 30 years: linked cohort studies with 68.9 million person-years of follow-up
... Furthermore, common deficiencies in ethnicity data have been circumvented by using the self-defined ethnicity variable from the Census, and numerator- denominator bias is avoided. The study size is also very large – with ...
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The (Paleo)Geography of Evolution: Making Sense of Changing Biology and Changing Continents
... Eutrilobita had deeper roots into the Ediacaran period and may have originated in Siberia (Fig. 7; see also Lieberman 2002). Meert and Lieberman (2008) used one particularly contentious paleogeography to show that these ...
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Minor Members of the S.S..doc
... 2) Long Period Comets – orbiting from about 50 A.U. out to 3 light years. Orbital periods from 200 years to several million years. Originate in the Oort Cloud. Illustration of a Comet’[r] ...
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Irrigating with polyacrylamide (PAM) - Nine years and a million acres of experience
... Field-wide erosion and infiltration effects of the patch method are comparable to the NRCS standard approach of dosing at a set concentration in the advance stream (Sojka and Lentz, unpu[r] ...
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Linking Globalization and Extinction Rates: A Statistical Analysis of the Effects of Globalization on Biodiversity
... the years and is one of the most important successes of international cooperation to preserve the global environment (Goldstein, Pevehouse, ...the years to ...
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