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Late Cenozoic climate change paces landscape adjustments to Yukon River capture 期刊论文
NATURE GEOSCIENCE, 2020
作者:  Bender, Adrian M.;  Lease, Richard O.;  Corbett, Lee B.;  Bierman, Paul R.;  Caffee, Marc W.;  Rittenour, Tammy M.
收藏  |  浏览/下载：12/0  |  提交时间：2020/08/09
Conglomerate recycling in the Himalayan foreland basin: Implications for grain size and provenance 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2020, 132 (7-8) : 1639-1656
作者:  Quick, Laura;  Sinclair, H. D.;  Attal, M.;  Singh, V
收藏  |  浏览/下载：9/0  |  提交时间：2020/08/18
Tectono-sedimentary evolution of a fossil ocean-continent transition: Tasna nappe, central Alps (SE Switzerland) 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2020, 132 (7-8) : 1427-1446
作者:  Ribes, Charlotte;  Petri, Benoit;  Ghienne, Jean-Francois;  Manatschal, Gianreto;  Galster, Federico;  Karner, Garryd D.;  Figueredo, Patricio H.;  Johnson, Christopher A.;  Karpoff, Anne-Marie
收藏  |  浏览/下载：11/0  |  提交时间：2020/08/18
The Mesoproterozoic Baoban Complex, South China: A missing fragment of western Laurentian lithosphere 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2020, 132 (7-8) : 1404-1418
作者:  Xu, Ya-Jun;  Cawood, Peter A.;  Zhang, Hang-Chuan;  Zi, Jian-Wei;  Zhou, Jin-Bo;  Li, Li-Xing;  Du, Yuan-Sheng
收藏  |  浏览/下载：15/0  |  提交时间：2020/08/18
Mineralogy and geochemistry of Asian dust: dependence on migration path, fractionation, and reactions with polluted air 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (12) : 7411-7428
作者:  Jeong, Gi Young
收藏  |  浏览/下载：5/0  |  提交时间：2020/06/29
Steady erosion rates in the Himalayas through late Cenozoic climatic changes 期刊论文
NATURE GEOSCIENCE, 2020, 13 (6) : 448-+
作者:  Lenard, Sebastien J. P.;  Lave, Jerome;  France-Lanord, Christian;  Aumaitre, Georges;  Bourles, Didier L.;  Keddadouche, Karim
收藏  |  浏览/下载：8/0  |  提交时间：2020/06/09
Structural analysis and tectonic evolution of the western domain of the Eastern Kunlun Range, northwest Tibet 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2020, 132 (5-6) : 1291-1315
作者:  Wu, Chen;  Liu, Changfeng;  Fan, Suoya;  Zuza, Andrew, V;  Ding, Lin;  Liu, Wencan;  Ye, Baoying;  Yang, Shijie;  Zhou, Zhiguang
收藏  |  浏览/下载：4/0  |  提交时间：2020/07/02
Initiation and evolution of forearc basins in the Central Myanmar Depression 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2020, 132 (5-6) : 1066-1082
作者:  Cai, Fulong;  39;en
收藏  |  浏览/下载：0/0  |  提交时间：2020/07/02
Hydrothermal (NN)-N-15-N-15 abundances constrain the origins of mantle nitrogen 期刊论文
NATURE, 2020, 580 (7803) : 367-+
作者:  Zhao, Steven;  Jang, Cholsoon;  Liu, Joyce;  Uehara, Kahealani;  Gilbert, Michael;  Izzo, Luke;  Zeng, Xianfeng;  Trefely, Sophie;  Fernandez, Sully;  Carrer, Alessandro;  Miller, Katelyn D.;  Schug, Zachary T.;  Snyder, Nathaniel W.;  Gade, Terence P.;  Titchenell, Paul M.;  Rabinowitz, Joshua D.;  Wellen, Kathryn E.
收藏  |  浏览/下载：14/0  |  提交时间：2020/05/13

Nitrogen is the main constituent of the Earth'  s atmosphere, but its provenance in the Earth'  s mantle remains uncertain. The relative contribution of primordial nitrogen inherited during the Earth'  s accretion versus that subducted from the Earth'  s surface is unclear(1-6). Here we show that the mantle may have retained remnants of such primordial nitrogen. We use the rare (NN)-N-15-N-15 isotopologue of N-2 as a new tracer of air contamination in volcanic gas effusions. By constraining air contamination in gases from Iceland, Eifel (Germany) and Yellowstone (USA), we derive estimates of mantle delta N-15 (the fractional difference in N-15/N-14 from air), N-2/Ar-36 and N-2/He-3. Our results show that negative delta N-15 values observed in gases, previously regarded as indicating a mantle origin for nitrogen(7-10), in fact represent dominantly air-derived N-2 that experienced N-15/N-14 fractionation in hydrothermal systems. Using two-component mixing models to correct for this effect, the (NN)-N-15-N-15 data allow extrapolations that characterize mantle endmember delta N-15, N-2/Ar-36 and N-2/He-3 values. We show that the Eifel region has slightly increased delta N-15 and N-2/Ar-36 values relative to estimates for the convective mantle provided by mid-ocean-ridge basalts(11), consistent with subducted nitrogen being added to the mantle source. In contrast, we find that whereas the Yellowstone plume has delta N-15 values substantially greater than that of the convective mantle, resembling surface components(12-15), its N-2/Ar-36 and N-2/He-3 ratios are indistinguishable from those of the convective mantle. This observation raises the possibility that the plume hosts a primordial component. We provide a test of the subduction hypothesis with a two-box model, describing the evolution of mantle and surface nitrogen through geological time. We show that the effect of subduction on the deep nitrogen cycle may be less important than has been suggested by previous investigations. We propose instead that high mid-ocean-ridge basalt and plume delta N-15 values may both be dominantly primordial features.


  
Individual Particle Characteristics, Optical Properties and Evolution of an Extreme Long-Range Transported Biomass Burning Event in the European Arctic (Ny-angstrom lesund, Svalbard Islands) 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (5)
作者:  Moroni, B.;  Ritter, C.;  Crocchianti, S.;  Markowicz, K.;  Mazzola, M.;  Becagli, S.;  Traversi, R.;  Krejci, R.;  Tunved, P.;  Cappelletti, D.
收藏  |  浏览/下载：7/0  |  提交时间：2020/07/02
SEM-EDS  particle size distribution  aerosol optical properties  closure studies  aerosol evolution