Marc W. Caffee

The Dingle Dell ( L6 ) meteorite fall: In‐depth characterization of an L chondrite with some LL ‐like properties originating from the inner main belt

Seamus Anderson, G. K. Benedix, L. V. Forman, Luke Daly et autres

Abstract The Dingle Dell meteorite fell in the wheat belt of Western Australia on Halloween night (October 31st) in 2016 and was observed by multiple cameras from the Desert Fireball Network, being recovered less than a week later. In this paper, we …

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Controls on glacial erosion rates revealed by cosmogenic nuclide measurements in southeastern Alaska

Jeremy P. Brooks, Andrew G. Jones, Shaun A. Marcott, Lucas K. Zoet et autres

Glaciers play an important role in shaping landscapes because of efficient bedrock erosion at their base. Understanding the contribution of glacial erosion to landscape evolution and the associated feedbacks between climate, erosion, and tectonics requires identifying the factors controlling glacial erosion. However, …

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Cave-based chronology of valley incision in the glaciated Northern Carpathians

Jacek Szczygieł, Gregory D. Hoke, Artur Sobczyk, Helena Hercman et autres

While glaciers leave a mark on mountain landscapes, the importance of glacial erosion in mountains at a global scale remains insufficiently constrained despite over a century of research aimed at quantifying the rates and magnitudes of such erosion. Measuring rates of landscape …

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Dataset for: Terrace and moraine chronologies from the Kangga and Maoyaba basins of the southeastern Tibetan Plateau provide complementary records of ice retreat since MIS 6

Ramona A.A. Schneider, Robin Blomdin, Natacha Gribenski, Marc W. Caffee et autres

The dataset includes complete sample information for cosmogenic nuclide exposure dating of glacial moraines and infra-red stimulated luminescence dating of alluvial terraces on the the southeastern Tibetan Plateau, Sichuan Province, China, as presented in the publication "Terrace and moraine chronologies from the …

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Dataset for: Terrace and moraine chronologies from the Kangga and Maoyaba basins of the southeastern Tibetan Plateau provide complementary records of ice retreat since MIS 6

Ramona A.A. Schneider, Robin Blomdin, Natacha Gribenski, Marc W. Caffee et autres

The dataset includes complete sample information for cosmogenic nuclide exposure dating of glacial moraines and infra-red stimulated luminescence dating of alluvial terraces on the the southeastern Tibetan Plateau, Sichuan Province, China, as presented in the publication "Terrace and moraine chronologies from the …

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Residence time and chemical weathering of a dark clayey (‘old blue’) till in east-central Sweden

Bradley W. Goodfellow, Gustav Sohlenius, Marc W. Caffee, Jakob Heyman et autres

Dark clayey (‘old blue’) tills occur at multiple locations throughout central Sweden. They have drawn scientific interest due to their over-consolidated state from ice sheet over-riding and high clay contents. These tills are overlain by younger glacial sediments and therefore predate the …

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Supplemental Material: Meteor over New York City: Brines in a primitive CM asteroid

Peter M. Jenniskens, MICHAEL E. ZOLENSKY, Austin Gordon, Jamie Gordon et autres

The CI (Ivuna-type) carbonaceous material returned from asteroids Ryugu and Bennu contain mobilized sodium from the evaporation or freezing of liquid water into brines, shedding light on the internal structure of ice-rich CI-type worlds and the formation of prebiotic organic compounds. The …

Late Holocene history of Glaciar Upsala, southern Patagonia, constrained by terrestrial and lacustrine records

M Ospina Romero, Maximillian Van Wyk de Vries, Anastasia Fedotova, Emi Ito et autres

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Levels of 129I in coastal Pacific Ocean waters from southern California, 2011–2020 and the legacy of Fukushima

A. J. T. Jull, Ching-Chih Chang, George S. Burr, Li Cheng et autres

The Fukushima Daiichi Nuclear Power Plant accident released radionuclides directly into the ocean as a result of the Great East Japan Earthquake on March 11, 2011. This material has been transported across the Pacific Ocean and detected in the northeastern Pacific. We …

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CI chondrite Oued Chebeika 002 links asteroids Bennu and Ryugu to common parent body

Megan Broussard, K. Lodders, P. K. Carpenter, Piers Koefoed et autres

Abstract CI chondrites are a compositionally primitive group of meteorites that have undergone extensive aqueous alteration, providing insights into the evolution of primitive planetesimals. Oued Chebeika 002 is the most pristine CI chondrite to date. In this work, we report its mineralogy, …

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Initial study of regolith exposure ages and burial conditions on Ryugu: Cosmogenic nuclides score in two touchdowns

Kunihiko Nishiizumi, Keisuke Nagao, Marc W. Caffee, Ryuji Okazaki et autres

Abstract Surface processes on the asteroid Ryugu have been investigated using cosmic‐ray‐produced radionuclides, 10 Be, 26 Al, and 36 Cl, and stable noble gases, on eight samples returned by the Hayabusa2 spacecraft. The 10 Be and 26 Al along with 21 Ne …

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Glaciers in California’s Sierra Nevada are likely disappearing for the first time in the Holocene

Andrew G. Jones, Shaun A. Marcott, Jeremy D. Shakun, Nathaniel A. Lifton et autres

Mountain glaciers are sensitive climate indicators. Glaciers in the western United States are projected to disappear by 2100 CE, but whether they were previously absent in the current interglacial (past 11,700 years) remains debated. Here, we present evidence that two of the …

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