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Earth and Planetary Science Letters
Papers 17764
1 page of 1,777 pages (17.8k results)
Published in Earth and Planetary Science Letters 4.64
Richard F. Ott (ETH Zurich), Sean F. Gallen5
Estimated H-index: 5
(ETH Zurich)
+ -3 AuthorsSean D. Willett23
Estimated H-index: 23
(ETH Zurich)
Abstract Quaternary paleoshorelines are common landforms on the island of Crete, a forearc high above the Hellenic Subduction Zone. These geomorphic markers are useful on Crete and elsewhere in determining coastal uplift rates, the identification of active geologic structures, and to constrain geodynamic models and seismic hazards. Controversy exists in the literature regarding the formation mechanisms and age of late Pleistocene paleoshorelines on Crete that has led to competing models of the u...
Published in Earth and Planetary Science Letters 4.64
James N. Connelly33
Estimated H-index: 33
(UCPH: University of Copenhagen),
Martin Schiller16
Estimated H-index: 16
(UCPH: University of Copenhagen),
Martin Bizzarro32
Estimated H-index: 32
(UCPH: University of Copenhagen)
Abstract Group IVA iron and siliate-iron meteorites record a large range of cooling rates attributed to an impact-related disruption of a molten and differentiated ca. 1000 km diameter planetary embryo of chondritic composition before re-accretion of mainly the metallic core with minor silicates. To better understand the timing of primary accretion, disruption, re-accretion and cooling of the Group IVA parent body, we have determined Pb-Pb and Al-Mg ages for the Group IVA silicate-iron Steinbach...
Published in Earth and Planetary Science Letters 4.64
Hehe Jiang4
Estimated H-index: 4
(Rice University),
Cin-Ty A. Lee44
Estimated H-index: 44
(Rice University)
Abstract The long-term stability of atmospheric pCO2 is dominantly determined by the balance between the rate of CO2 input from magmatic/metamorphic degassing and the efficiency of CO2 uptake by silicate weathering via eventual precipitation as marine carbonate and by organic carbon burial. Silicate weathering is thought to represent a negative feedback to changes in atmospheric pCO2. The Late Cretaceous-Early Cenozoic was characterized by elevated atmospheric pCO2 and greenhouse climate, widely...
Published in Earth and Planetary Science Letters 4.64
Ben M. Geyman (WHOI: Woods Hole Oceanographic Institution), Jamie L. Ptacek (Bowdoin College)+ -3 AuthorsTristan J. Horner12
Estimated H-index: 12
(WHOI: Woods Hole Oceanographic Institution)
Abstract Reconstruction of past seawater δ 138 / 134 BaNIST (barium-isotopic compositions) can augment existing proxies of water mass provenance and deep-ocean circulation. Deep-sea bamboo corals are uniquely poised to record Ba-isotopic variations, given their widespread oceanographic distribution and incorporation of ambient Ba in approximate proportion to that in surrounding seawater. However, the utility of such records requires knowing: the phases hosting Ba in deep-sea coral skeletons, tha...
Published in Earth and Planetary Science Letters 4.64
C.C. Walker (UMD: University of Maryland, College Park), A.S. Gardner1
Estimated H-index: 1
(California Institute of Technology)
Abstract Ice shelf rifts are predecessors to iceberg calving events. Observations of their morphology over time and interaction with their surroundings are presented. Newly-available Landsat-derived annual velocity data and laser altimetry from NASA's ICESat, ICESat-2 and Operation IceBridge missions were used to characterize several ice shelf rift systems. Actively propagating ice shelf rifts exhibit uplift on both sides, with an offset in height between the two rift walls, suggesting an asymme...
Published in Earth and Planetary Science Letters 4.64
M. E. Belardinelli8
Estimated H-index: 8
M. Bonafede22
Estimated H-index: 22
Massimo Nespoli5
Estimated H-index: 5
Abstract We study the strain and stress fields produced by temperature and pore pressure increases within and outside a Thermo-Poro-Elastic (TPE) inclusion (the source region), embedded within a medium (the matrix) in isothermal drained conditions. This model is suitable to describe a crustal region in a volcanic environment pervaded by hot pressurized fluids released by an underlying magma chamber. After introducing the pertinent constitutive relations, a formal solution for the displacement fi...
Published in Earth and Planetary Science Letters 4.64
Derek Vance41
Estimated H-index: 41
(ETH Zurich),
Gregory F. de Souza9
Estimated H-index: 9
(ETH Zurich)
+ -3 AuthorsMaeve C. Lohan30
Estimated H-index: 30
(NOC: National Oceanography Centre)
Abstract Trace metal micronutrients play key roles in photosynthesis by oceanic phytoplankton. Though they are required in much smaller amounts than the major nutrients (P, N, Si), their bioavailable forms are also present in the seawater solution at much lower levels. Relationships between the dissolved chemistry of the nutrient-type trace metals, their stable isotope variations, as well those of the major nutrients, have highlighted the importance of biological and physical processes in the So...
Published in Earth and Planetary Science Letters 4.64
Lena Thöle3
Estimated H-index: 3
(University of Bern),
H. Eri Amsler (University of Bern)+ -3 AuthorsElisabeth Michel18
Estimated H-index: 18
Abstract We present 230Th-normalized dust and export production fluxes for two contrasted marine sediment cores spanning the Antarctic Polar Front, close to the Kerguelen Plateau in the Southern Indian Ocean, covering the last glacial cycle. We report glacial lithogenic fluxes comparable to the South Atlantic and higher than in the South Pacific sectors of the Southern Ocean. Structural and temporal discrepancies with dust reconstructions from Antarctic ice cores and the Atlantic and Pacific sec...
Published in Earth and Planetary Science Letters 4.64
Nadège Fetter (École normale supérieure de Lyon), Janne Blichert-Toft62
Estimated H-index: 62
(École normale supérieure de Lyon)
+ -3 AuthorsFrancis Albarède77
Estimated H-index: 77
(École normale supérieure de Lyon)
Abstract Although Pb, U, and Th may be fractionated between crude oil and formation waters, Pb isotopes are not. This unique property makes Pb isotopes a particularly useful marker of hydrocarbon generation and migration. Here we show that Pb isotopes offer a new vision of long-range (secondary) oil migration relevant to the formation of oil fields. North Sea oils are largely generated from Jurassic black shales, yet their Pb isotopes are mixtures of Cenozoic to Proterozoic end-members. The same...
Published in Earth and Planetary Science Letters 4.64
Simone Galeotti21
Estimated H-index: 21
Diana Sahy7
Estimated H-index: 7
(BGS: British Geological Survey)
+ -3 AuthorsDomenico Rio37
Estimated H-index: 37
(UNIPD: University of Padua)
Abstract We have carried out an integrated chronostratigraphic analysis of the Alano di Piave section, proposed GSSP for the Bartonian/Priabonian boundary (late Eocene). Age constraints were derived independently from a floating cyclochronology based on carbon isotope and wt.% CaCO3 records, and 206Pb/238U dating of zircons from four volcanic tuffs. Orbital and radio-isotopic estimates of the duration of intervals bracketed by consecutive crystal-rich volcanic tuff layers are in good overall agr...