Showing papers in "Earth and Planetary Science Letters in 2009"

TL;DR: In this paper, the authors compare the U-Pb ages of detrital zircons in 58 samples of Mesozoic sandstone from the Colorado Plateau and adjacent areas with depositional ages known independently from biostratigraphy.

TL;DR: In this article, a thermobarometer based on magma Si and Mg contents was used to estimate the pressures and temperatures of basaltic magma generation on Earth and other terrestrial planets.

TL;DR: In this paper, the authors show that heating of Tunguska Basin sediments by ascending magma played a key role in triggering the end-Permian environmental crisis.

TL;DR: In this paper, the authors presented new high-precision 40Ar/39Ar ages on feldspar and biotite separates to establish the age, duration and extent of the larger Siberian Traps volcanic province.

TL;DR: In this article, a catalogue of 677 landslides of the slide type was selected from a global database of geometrical measurements of individual landslides, including landslide area (AL) and volume (VL).

TL;DR: The role of coupled arc-back-arc accretionary processes in crust generation was explored in this article by considering the tectonic context of whole rock Nd isotope and zircon Hf-O isotope data from igneous rocks of the Australian Tasmanides (515-230 Ma), which is thought to have evolved by the repeated opening and closure of sediment-filled back-arc basins behind a long-lived subduction zone.

TL;DR: In order to reconstruct the palaeotemperature history of the Devonian, the oxygen isotope composition of apatite phosphate was measured on 639 conodont samples from sequences in Europe, North America and Australia.

TL;DR: In this article, the authors report secular trends in bulk isotopic parameters and lipid biomarkers in a core spanning 214 m of stratigraphic section across the PTB and through the entire Changhsingian interval, revealing distinct shifts in paleoenvironmental conditions and profound changes in plankton ecology well before and following the biological extinction event.

TL;DR: Lisiecki et al. as mentioned in this paper used the Match algorithm to simultaneously correlate isotope and RPI records, which reduced the degree of freedom associated with correlations using RPI or oxygen isotope records alone.

TL;DR: In this article, the authors attributed long-term climate moderation to chemical weathering; the higher the temperature and precipitation, the faster the weathering rate, and the more divalent cations were released to the environment.

TL;DR: In this article, numerical simulations involving heat transfer computation were used to estimate the conditions required for the formation of large magma chambers within plutons that grow by vertical stacking of sills.

TL;DR: In this article, the compositional changes associated with textural effects and hydraulic sorting during sediment transport and deposition, which cause systematic distortion in quantitative provenance analysis (environmental bias), are investigated both experimentally and theoretically.

TL;DR: In this paper, surface breaks along two of the main branches of the NE-trending Longmen Shan thrust fault system are reported. But the authors do not report any co-seismic slip partitioning on parallel thrusts.

TL;DR: Li et al. as discussed by the authors have migrated teleseismic S-receiver functions to construct detailed lithospheric structure images that cover the three constituent parts of the North China Craton (NCC).

TL;DR: In this article, a set of almost linear and sub-par dextral strike-slip faults, the SWIM1 Faults, that form a narrow band of deformation over a length of 600 km coincident with a small circle centred on the pole of rotation of Africa with respect to Eurasia, was mapped using a new swath bathymetry compilation available in the area offshore SW Portugal.

TL;DR: In this paper, an evaluation of the historical record of volcanic eruptions shows that subaerial volcanism increases globally by two to six times above background levels between 12-ka and 7-ka, during the last deglaciation.

TL;DR: In this article, high-precision Fe isotopic data for 104 samples, including modern and ancient (≥ 3.7 Ga) subduction-related magmas and mantle peridotites, are presented.

TL;DR: In this paper, a series of experiments are presented using the RegCM3 regional general circulation model (RCM) to characterize changes in Andean precipitation amount, surface temperature, and wind direction (vapor source) as a function of changing plateau elevation.

TL;DR: In this article, an analysis of the global distribution of U/Pb ages of both subduction-related granitoids and of detrital zircons suggests that a widespread reduction in magmatic activity on Earth beginning about 2.45 Ga and lasting for 200-250 My.

TL;DR: In this article, the disintegration process is characterized by repeated rapid fracturing that creates narrow ice-edge-parallel blocks, with subsequent block toppling and fragmentation forming an expanding iceberg and ice rubble mass.

TL;DR: In this article, the authors present results from a near-bottom sidescan sonar/bathymetric profiler survey and sampling study of the Mid-Atlantic Ridge near 13°N that identify the critical controls on oceanic core complex development and evolution.

TL;DR: Paleoarchean rocks of the tonalite-trondhjemite-granodiorite (TTG) series require a basaltic source region more enriched in K, LILE, Th and LREE than the low-K tholeiites typical of Archean supracrustal sequences as discussed by the authors.

TL;DR: This article measured the hydrogen isotope composition of n -alkanes from epicuticular plant waxes preserved in lacustrine deposits to reconstruct the δ D of precipitation in Cenozoic basins that have been elevated as part of the Tibetan Plateau.

TL;DR: A detailed magnetostratigraphic study of the Dahonggou section, northern Qaidam Basin, reveal that the section spans from ~34 to ~8.5 Ma as mentioned in this paper.

TL;DR: In this article, a compilation of SKS fast splitting directions is used to give an image of flow lines in the mantle around the Mediterranean subduction zones and a comparison with stretching and shear directions in metamorphic core complexes that show the pattern of deformation at the scale of the middle and lower crusts.

TL;DR: In this article, the authors determined high-pressure melting curves for Fe3C, Fe7C3 and the Fe-Fe3C eutectic using laser-heated diamond anvil cell techniques.

TL;DR: In this article, a comprehensive examination of MORB from the Atlantic, Indian and Pacific oceans, including both normal and enriched-type samples, reveals a composite MORB source K/U ratio of 19,000±-2600 (2σ).

TL;DR: In this article, the electrical conductivity of San Carlos olivine aggregate of various water content was measured at a pressure of 10 GPa in a Kawai-type multi-anvil apparatus.

TL;DR: In this article, the authors presented new δ18O and δD data from 191 streams across the Himalaya and Tibetan Plateau to better constrain the spatial variability of stable isotopes in modern precipitation over this region.

TL;DR: In this paper, a diabase sill sample emplaced into the Mesoproterozoic Wumishan Formation yielded weighed mean 207 Pb/ 206 Pb ages of 1345 −± −12 −Ma (95% confidence, MSWD −1.8, N ǫ=−18) and 1353 −±−14 −Ma, respectively, indicating emplacement of the sills at the Mid-MesoproTERozoic (Ectasian) instead of the Late Paleozoic or Mesozoic as previously regarded